source: vendor/automake/1.10/automake.in@ 3345

Last change on this file since 3345 was 3147, checked in by bird, 18 years ago

automake 1.10

File size: 227.3 KB
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1#!@PERL@ -w
2# -*- perl -*-
3# @configure_input@
4
5eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
7
8# automake - create Makefile.in from Makefile.am
9# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10# 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
11
12# This program is free software; you can redistribute it and/or modify
13# it under the terms of the GNU General Public License as published by
14# the Free Software Foundation; either version 2, or (at your option)
15# any later version.
16
17# This program is distributed in the hope that it will be useful,
18# but WITHOUT ANY WARRANTY; without even the implied warranty of
19# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20# GNU General Public License for more details.
21
22# You should have received a copy of the GNU General Public License
23# along with this program; if not, write to the Free Software
24# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25# 02110-1301, USA.
26
27# Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28# Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
29# Alexandre Duret-Lutz <adl@gnu.org>.
30
31package Language;
32
33BEGIN
34{
35 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
36 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
37
38 # Override SHELL. This is required on DJGPP so that system() uses
39 # bash, not COMMAND.COM which doesn't quote arguments properly.
40 # Other systems aren't expected to use $SHELL when Automake
41 # runs, but it should be safe to drop the `if DJGPP' guard if
42 # it turns up other systems need the same thing. After all,
43 # if SHELL is used, ./configure's SHELL is always better than
44 # the user's SHELL (which may be something like tcsh).
45 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
46}
47
48use Automake::Struct;
49struct (# Short name of the language (c, f77...).
50 'name' => "\$",
51 # Nice name of the language (C, Fortran 77...).
52 'Name' => "\$",
53
54 # List of configure variables which must be defined.
55 'config_vars' => '@',
56
57 'ansi' => "\$",
58 # `pure' is `1' or `'. A `pure' language is one where, if
59 # all the files in a directory are of that language, then we
60 # do not require the C compiler or any code to call it.
61 'pure' => "\$",
62
63 'autodep' => "\$",
64
65 # Name of the compiling variable (COMPILE).
66 'compiler' => "\$",
67 # Content of the compiling variable.
68 'compile' => "\$",
69 # Flag to require compilation without linking (-c).
70 'compile_flag' => "\$",
71 'extensions' => '@',
72 # A subroutine to compute a list of possible extensions of
73 # the product given the input extensions.
74 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
75 'output_extensions' => "\$",
76 # A list of flag variables used in 'compile'.
77 # (defaults to [])
78 'flags' => "@",
79
80 # Any tag to pass to libtool while compiling.
81 'libtool_tag' => "\$",
82
83 # The file to use when generating rules for this language.
84 # The default is 'depend2'.
85 'rule_file' => "\$",
86
87 # Name of the linking variable (LINK).
88 'linker' => "\$",
89 # Content of the linking variable.
90 'link' => "\$",
91
92 # Name of the linker variable (LD).
93 'lder' => "\$",
94 # Content of the linker variable ($(CC)).
95 'ld' => "\$",
96
97 # Flag to specify the output file (-o).
98 'output_flag' => "\$",
99 '_finish' => "\$",
100
101 # This is a subroutine which is called whenever we finally
102 # determine the context in which a source file will be
103 # compiled.
104 '_target_hook' => "\$",
105
106 # If TRUE, nodist_ sources will be compiled using specific rules
107 # (i.e. not inference rules). The default is FALSE.
108 'nodist_specific' => "\$");
109
110
111sub finish ($)
112{
113 my ($self) = @_;
114 if (defined $self->_finish)
115 {
116 &{$self->_finish} ();
117 }
118}
119
120sub target_hook ($$$$%)
121{
122 my ($self) = @_;
123 if (defined $self->_target_hook)
124 {
125 &{$self->_target_hook} (@_);
126 }
127}
128
129package Automake;
130
131use strict;
132use Automake::Config;
133use Automake::General;
134use Automake::XFile;
135use Automake::Channels;
136use Automake::ChannelDefs;
137use Automake::Configure_ac;
138use Automake::FileUtils;
139use Automake::Location;
140use Automake::Condition qw/TRUE FALSE/;
141use Automake::DisjConditions;
142use Automake::Options;
143use Automake::Version;
144use Automake::Variable;
145use Automake::VarDef;
146use Automake::Rule;
147use Automake::RuleDef;
148use Automake::Wrap 'makefile_wrap';
149use File::Basename;
150use File::Spec;
151use Carp;
152
153## ----------- ##
154## Constants. ##
155## ----------- ##
156
157# Some regular expressions. One reason to put them here is that it
158# makes indentation work better in Emacs.
159
160# Writing singled-quoted-$-terminated regexes is a pain because
161# perl-mode thinks of $' as the ${'} variable (instead of a $ followed
162# by a closing quote. Letting perl-mode think the quote is not closed
163# leads to all sort of misindentations. On the other hand, defining
164# regexes as double-quoted strings is far less readable. So usually
165# we will write:
166#
167# $REGEX = '^regex_value' . "\$";
168
169my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
170my $WHITE_PATTERN = '^\s*' . "\$";
171my $COMMENT_PATTERN = '^#';
172my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
173# A rule has three parts: a list of targets, a list of dependencies,
174# and optionally actions.
175my $RULE_PATTERN =
176 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
177
178# Only recognize leading spaces, not leading tabs. If we recognize
179# leading tabs here then we need to make the reader smarter, because
180# otherwise it will think rules like `foo=bar; \' are errors.
181my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
182# This pattern recognizes a Gnits version id and sets $1 if the
183# release is an alpha release. We also allow a suffix which can be
184# used to extend the version number with a "fork" identifier.
185my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
186
187my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
188my $ELSE_PATTERN =
189 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190my $ENDIF_PATTERN =
191 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
192my $PATH_PATTERN = '(\w|[+/.-])+';
193# This will pass through anything not of the prescribed form.
194my $INCLUDE_PATTERN = ('^include\s+'
195 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
196 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
197 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
198
199# Match `-d' as a command-line argument in a string.
200my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
201# Directories installed during 'install-exec' phase.
202my $EXEC_DIR_PATTERN =
203 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
204
205# Values for AC_CANONICAL_*
206use constant AC_CANONICAL_BUILD => 1;
207use constant AC_CANONICAL_HOST => 2;
208use constant AC_CANONICAL_TARGET => 3;
209
210# Values indicating when something should be cleaned.
211use constant MOSTLY_CLEAN => 0;
212use constant CLEAN => 1;
213use constant DIST_CLEAN => 2;
214use constant MAINTAINER_CLEAN => 3;
215
216# Libtool files.
217my @libtool_files = qw(ltmain.sh config.guess config.sub);
218# ltconfig appears here for compatibility with old versions of libtool.
219my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
220
221# Commonly found files we look for and automatically include in
222# DISTFILES.
223my @common_files =
224 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
225 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
226 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
227 depcomp elisp-comp install-sh libversion.in mdate-sh missing
228 mkinstalldirs py-compile texinfo.tex ylwrap),
229 @libtool_files, @libtool_sometimes);
230
231# Commonly used files we auto-include, but only sometimes. This list
232# is used for the --help output only.
233my @common_sometimes =
234 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
235 configure.ac configure.in stamp-vti);
236
237# Standard directories from the GNU Coding Standards, and additional
238# pkg* directories from Automake. Stored in a hash for fast member check.
239my %standard_prefix =
240 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
241 lib libexec lisp localstate man man1 man2 man3
242 man4 man5 man6 man7 man8 man9 oldinclude pdf
243 pkgdatadir pkgincludedir pkglibdir ps sbin
244 sharedstate sysconf));
245
246# Copyright on generated Makefile.ins.
247my $gen_copyright = "\
248# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
249# 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
250# This Makefile.in is free software; the Free Software Foundation
251# gives unlimited permission to copy and/or distribute it,
252# with or without modifications, as long as this notice is preserved.
253
254# This program is distributed in the hope that it will be useful,
255# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
256# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
257# PARTICULAR PURPOSE.
258";
259
260# These constants are returned by the lang_*_rewrite functions.
261# LANG_SUBDIR means that the resulting object file should be in a
262# subdir if the source file is. In this case the file name cannot
263# have `..' components.
264use constant LANG_IGNORE => 0;
265use constant LANG_PROCESS => 1;
266use constant LANG_SUBDIR => 2;
267
268# These are used when keeping track of whether an object can be built
269# by two different paths.
270use constant COMPILE_LIBTOOL => 1;
271use constant COMPILE_ORDINARY => 2;
272
273# We can't always associate a location to a variable or a rule,
274# when it's defined by Automake. We use INTERNAL in this case.
275use constant INTERNAL => new Automake::Location;
276
277
278
279## ---------------------------------- ##
280## Variables related to the options. ##
281## ---------------------------------- ##
282
283# TRUE if we should always generate Makefile.in.
284my $force_generation = 1;
285
286# From the Perl manual.
287my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
288
289# TRUE if missing standard files should be installed.
290my $add_missing = 0;
291
292# TRUE if we should copy missing files; otherwise symlink if possible.
293my $copy_missing = 0;
294
295# TRUE if we should always update files that we know about.
296my $force_missing = 0;
297
298
299## ---------------------------------------- ##
300## Variables filled during files scanning. ##
301## ---------------------------------------- ##
302
303# Name of the configure.ac file.
304my $configure_ac;
305
306# Files found by scanning configure.ac for LIBOBJS.
307my %libsources = ();
308
309# Names used in AC_CONFIG_HEADER call.
310my @config_headers = ();
311
312# Names used in AC_CONFIG_LINKS call.
313my @config_links = ();
314
315# Directory where output files go. Actually, output files are
316# relative to this directory.
317my $output_directory;
318
319# List of Makefile.am's to process, and their corresponding outputs.
320my @input_files = ();
321my %output_files = ();
322
323# Complete list of Makefile.am's that exist.
324my @configure_input_files = ();
325
326# List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
327# and their outputs.
328my @other_input_files = ();
329# Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
330# The keys are the files created by these macros.
331my %ac_config_files_location = ();
332
333# Directory to search for configure-required files. This
334# will be computed by &locate_aux_dir and can be set using
335# AC_CONFIG_AUX_DIR in configure.ac.
336# $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
337my $config_aux_dir = '';
338my $config_aux_dir_set_in_configure_ac = 0;
339# $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
340# in Makefiles.
341my $am_config_aux_dir = '';
342
343# Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
344# in configure.ac.
345my $config_libobj_dir = '';
346
347# Whether AM_GNU_GETTEXT has been seen in configure.ac.
348my $seen_gettext = 0;
349# Whether AM_GNU_GETTEXT([external]) is used.
350my $seen_gettext_external = 0;
351# Where AM_GNU_GETTEXT appears.
352my $ac_gettext_location;
353# Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
354my $seen_gettext_intl = 0;
355
356# Lists of tags supported by Libtool.
357my %libtool_tags = ();
358# 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
359# uses AC_REQUIRE_AUX_FILE.
360my $libtool_new_api = 0;
361
362# Most important AC_CANONICAL_* macro seen so far.
363my $seen_canonical = 0;
364# Location of that macro.
365my $canonical_location;
366
367# Where AM_MAINTAINER_MODE appears.
368my $seen_maint_mode;
369
370# Actual version we've seen.
371my $package_version = '';
372
373# Where version is defined.
374my $package_version_location;
375
376# TRUE if we've seen AC_ENABLE_MULTILIB.
377my $seen_multilib = 0;
378
379# TRUE if we've seen AM_PROG_CC_C_O
380my $seen_cc_c_o = 0;
381
382# Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
383my %required_aux_file = ();
384
385# Where AM_INIT_AUTOMAKE is called;
386my $seen_init_automake = 0;
387
388# TRUE if we've seen AM_AUTOMAKE_VERSION.
389my $seen_automake_version = 0;
390
391# Hash table of discovered configure substitutions. Keys are names,
392# values are `FILE:LINE' strings which are used by error message
393# generation.
394my %configure_vars = ();
395
396# Ignored configure substitutions (i.e., variables not to be output in
397# Makefile.in)
398my %ignored_configure_vars = ();
399
400# Files included by $configure_ac.
401my @configure_deps = ();
402
403# Greatest timestamp of configure's dependencies.
404my $configure_deps_greatest_timestamp = 0;
405
406# Hash table of AM_CONDITIONAL variables seen in configure.
407my %configure_cond = ();
408
409# This maps extensions onto language names.
410my %extension_map = ();
411
412# List of the DIST_COMMON files we discovered while reading
413# configure.in
414my $configure_dist_common = '';
415
416# This maps languages names onto objects.
417my %languages = ();
418# Maps each linker variable onto a language object.
419my %link_languages = ();
420
421# List of targets we must always output.
422# FIXME: Complete, and remove falsely required targets.
423my %required_targets =
424 (
425 'all' => 1,
426 'dvi' => 1,
427 'pdf' => 1,
428 'ps' => 1,
429 'info' => 1,
430 'install-info' => 1,
431 'install' => 1,
432 'install-data' => 1,
433 'install-exec' => 1,
434 'uninstall' => 1,
435
436 # FIXME: Not required, temporary hacks.
437 # Well, actually they are sort of required: the -recursive
438 # targets will run them anyway...
439 'dvi-am' => 1,
440 'pdf-am' => 1,
441 'ps-am' => 1,
442 'info-am' => 1,
443 'install-data-am' => 1,
444 'install-exec-am' => 1,
445 'installcheck-am' => 1,
446 'uninstall-am' => 1,
447
448 'install-man' => 1,
449 );
450
451# Set to 1 if this run will create the Makefile.in that distribute
452# the files in config_aux_dir.
453my $automake_will_process_aux_dir = 0;
454
455# The name of the Makefile currently being processed.
456my $am_file = 'BUG';
457
458
459
460################################################################
461
462## ------------------------------------------ ##
463## Variables reset by &initialize_per_input. ##
464## ------------------------------------------ ##
465
466# Basename and relative dir of the input file.
467my $am_file_name;
468my $am_relative_dir;
469
470# Same but wrt Makefile.in.
471my $in_file_name;
472my $relative_dir;
473
474# Relative path to the top directory.
475my $topsrcdir;
476
477# Greatest timestamp of the output's dependencies (excluding
478# configure's dependencies).
479my $output_deps_greatest_timestamp;
480
481# These two variables are used when generating each Makefile.in.
482# They hold the Makefile.in until it is ready to be printed.
483my $output_rules;
484my $output_vars;
485my $output_trailer;
486my $output_all;
487my $output_header;
488
489# This is the conditional stack, updated on if/else/endif, and
490# used to build Condition objects.
491my @cond_stack;
492
493# This holds the set of included files.
494my @include_stack;
495
496# List of dependencies for the obvious targets.
497my @all;
498my @check;
499my @check_tests;
500
501# Keys in this hash table are files to delete. The associated
502# value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
503my %clean_files;
504
505# Keys in this hash table are object files or other files in
506# subdirectories which need to be removed. This only holds files
507# which are created by compilations. The value in the hash indicates
508# when the file should be removed.
509my %compile_clean_files;
510
511# Keys in this hash table are directories where we expect to build a
512# libtool object. We use this information to decide what directories
513# to delete.
514my %libtool_clean_directories;
515
516# Value of `$(SOURCES)', used by tags.am.
517my @sources;
518# Sources which go in the distribution.
519my @dist_sources;
520
521# This hash maps object file names onto their corresponding source
522# file names. This is used to ensure that each object is created
523# by a single source file.
524my %object_map;
525
526# This hash maps object file names onto an integer value representing
527# whether this object has been built via ordinary compilation or
528# libtool compilation (the COMPILE_* constants).
529my %object_compilation_map;
530
531
532# This keeps track of the directories for which we've already
533# created dirstamp code. Keys are directories, values are stamp files.
534# Several keys can share the same stamp files if they are equivalent
535# (as are `.//foo' and `foo').
536my %directory_map;
537
538# All .P files.
539my %dep_files;
540
541# This is a list of all targets to run during "make dist".
542my @dist_targets;
543
544# Keep track of all programs declared in this Makefile, without
545# $(EXEEXT). @substitution@ are not listed.
546my %known_programs;
547
548# Keys in this hash are the basenames of files which must depend on
549# ansi2knr. Values are either the empty string, or the directory in
550# which the ANSI source file appears; the directory must have a
551# trailing `/'.
552my %de_ansi_files;
553
554# This is the name of the redirect `all' target to use.
555my $all_target;
556
557# This keeps track of which extensions we've seen (that we care
558# about).
559my %extension_seen;
560
561# This is random scratch space for the language finish functions.
562# Don't randomly overwrite it; examine other uses of keys first.
563my %language_scratch;
564
565# We keep track of which objects need special (per-executable)
566# handling on a per-language basis.
567my %lang_specific_files;
568
569# This is set when `handle_dist' has finished. Once this happens,
570# we should no longer push on dist_common.
571my $handle_dist_run;
572
573# Used to store a set of linkers needed to generate the sources currently
574# under consideration.
575my %linkers_used;
576
577# True if we need `LINK' defined. This is a hack.
578my $need_link;
579
580# Was get_object_extension run?
581# FIXME: This is a hack. a better switch should be found.
582my $get_object_extension_was_run;
583
584# Record each file processed by make_paragraphs.
585my %transformed_files;
586
587# Cache each file processed by make_paragraphs.
588# (This is different from %transformed_files because
589# %transformed_files is reset for each file while %am_file_cache
590# it global to the run.)
591my %am_file_cache;
592
593################################################################
594
595# var_SUFFIXES_trigger ($TYPE, $VALUE)
596# ------------------------------------
597# This is called by Automake::Variable::define() when SUFFIXES
598# is defined ($TYPE eq '') or appended ($TYPE eq '+').
599# The work here needs to be performed as a side-effect of the
600# macro_define() call because SUFFIXES definitions impact
601# on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
602# the input am file.
603sub var_SUFFIXES_trigger ($$)
604{
605 my ($type, $value) = @_;
606 accept_extensions (split (' ', $value));
607}
608Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
609
610################################################################
611
612## --------------------------------- ##
613## Forward subroutine declarations. ##
614## --------------------------------- ##
615sub register_language (%);
616sub file_contents_internal ($$$%);
617sub define_files_variable ($\@$$);
618
619
620# &initialize_per_input ()
621# ------------------------
622# (Re)-Initialize per-Makefile.am variables.
623sub initialize_per_input ()
624{
625 reset_local_duplicates ();
626
627 $am_file_name = '';
628 $am_relative_dir = '';
629
630 $in_file_name = '';
631 $relative_dir = '';
632
633 $output_deps_greatest_timestamp = 0;
634
635 $output_rules = '';
636 $output_vars = '';
637 $output_trailer = '';
638 $output_all = '';
639 $output_header = '';
640
641 Automake::Options::reset;
642 Automake::Variable::reset;
643 Automake::Rule::reset;
644
645 @cond_stack = ();
646
647 @include_stack = ();
648
649 @all = ();
650 @check = ();
651 @check_tests = ();
652
653 %clean_files = ();
654
655 @sources = ();
656 @dist_sources = ();
657
658 %object_map = ();
659 %object_compilation_map = ();
660
661 %directory_map = ();
662
663 %dep_files = ();
664
665 @dist_targets = ();
666
667 %known_programs = ();
668
669 %de_ansi_files = ();
670
671 $all_target = '';
672
673 %extension_seen = ();
674
675 %language_scratch = ();
676
677 %lang_specific_files = ();
678
679 $handle_dist_run = 0;
680
681 $need_link = 0;
682
683 $get_object_extension_was_run = 0;
684
685 %compile_clean_files = ();
686
687 # We always include `.'. This isn't strictly correct.
688 %libtool_clean_directories = ('.' => 1);
689
690 %transformed_files = ();
691}
692
693
694################################################################
695
696# Initialize our list of languages that are internally supported.
697
698# C.
699register_language ('name' => 'c',
700 'Name' => 'C',
701 'config_vars' => ['CC'],
702 'ansi' => 1,
703 'autodep' => '',
704 'flags' => ['CFLAGS', 'CPPFLAGS'],
705 'compiler' => 'COMPILE',
706 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
707 'lder' => 'CCLD',
708 'ld' => '$(CC)',
709 'linker' => 'LINK',
710 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
711 'compile_flag' => '-c',
712 'libtool_tag' => 'CC',
713 'extensions' => ['.c'],
714 '_finish' => \&lang_c_finish);
715
716# C++.
717register_language ('name' => 'cxx',
718 'Name' => 'C++',
719 'config_vars' => ['CXX'],
720 'linker' => 'CXXLINK',
721 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
722 'autodep' => 'CXX',
723 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
724 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
725 'compiler' => 'CXXCOMPILE',
726 'compile_flag' => '-c',
727 'output_flag' => '-o',
728 'libtool_tag' => 'CXX',
729 'lder' => 'CXXLD',
730 'ld' => '$(CXX)',
731 'pure' => 1,
732 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
733
734# Objective C.
735register_language ('name' => 'objc',
736 'Name' => 'Objective C',
737 'config_vars' => ['OBJC'],
738 'linker' => 'OBJCLINK',
739 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
740 'autodep' => 'OBJC',
741 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
742 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
743 'compiler' => 'OBJCCOMPILE',
744 'compile_flag' => '-c',
745 'output_flag' => '-o',
746 'lder' => 'OBJCLD',
747 'ld' => '$(OBJC)',
748 'pure' => 1,
749 'extensions' => ['.m']);
750
751# Unified Parallel C.
752register_language ('name' => 'upc',
753 'Name' => 'Unified Parallel C',
754 'config_vars' => ['UPC'],
755 'linker' => 'UPCLINK',
756 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
757 'autodep' => 'UPC',
758 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
759 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
760 'compiler' => 'UPCCOMPILE',
761 'compile_flag' => '-c',
762 'output_flag' => '-o',
763 'lder' => 'UPCLD',
764 'ld' => '$(UPC)',
765 'pure' => 1,
766 'extensions' => ['.upc']);
767
768# Headers.
769register_language ('name' => 'header',
770 'Name' => 'Header',
771 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
772 '.hpp', '.inc'],
773 # No output.
774 'output_extensions' => sub { return () },
775 # Nothing to do.
776 '_finish' => sub { });
777
778# Yacc (C & C++).
779register_language ('name' => 'yacc',
780 'Name' => 'Yacc',
781 'config_vars' => ['YACC'],
782 'flags' => ['YFLAGS'],
783 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
784 'compiler' => 'YACCCOMPILE',
785 'extensions' => ['.y'],
786 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
787 return ($ext,) },
788 'rule_file' => 'yacc',
789 '_finish' => \&lang_yacc_finish,
790 '_target_hook' => \&lang_yacc_target_hook,
791 'nodist_specific' => 1);
792register_language ('name' => 'yaccxx',
793 'Name' => 'Yacc (C++)',
794 'config_vars' => ['YACC'],
795 'rule_file' => 'yacc',
796 'flags' => ['YFLAGS'],
797 'compiler' => 'YACCCOMPILE',
798 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
799 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
800 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
801 return ($ext,) },
802 '_finish' => \&lang_yacc_finish,
803 '_target_hook' => \&lang_yacc_target_hook,
804 'nodist_specific' => 1);
805
806# Lex (C & C++).
807register_language ('name' => 'lex',
808 'Name' => 'Lex',
809 'config_vars' => ['LEX'],
810 'rule_file' => 'lex',
811 'flags' => ['LFLAGS'],
812 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
813 'compiler' => 'LEXCOMPILE',
814 'extensions' => ['.l'],
815 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
816 return ($ext,) },
817 '_finish' => \&lang_lex_finish,
818 '_target_hook' => \&lang_lex_target_hook,
819 'nodist_specific' => 1);
820register_language ('name' => 'lexxx',
821 'Name' => 'Lex (C++)',
822 'config_vars' => ['LEX'],
823 'rule_file' => 'lex',
824 'flags' => ['LFLAGS'],
825 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
826 'compiler' => 'LEXCOMPILE',
827 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
828 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
829 return ($ext,) },
830 '_finish' => \&lang_lex_finish,
831 '_target_hook' => \&lang_lex_target_hook,
832 'nodist_specific' => 1);
833
834# Assembler.
835register_language ('name' => 'asm',
836 'Name' => 'Assembler',
837 'config_vars' => ['CCAS', 'CCASFLAGS'],
838
839 'flags' => ['CCASFLAGS'],
840 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
841 # or anything else required. They can also set CCAS.
842 # Or simply use Preprocessed Assembler.
843 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
844 'compiler' => 'CCASCOMPILE',
845 'compile_flag' => '-c',
846 'output_flag' => '-o',
847 'extensions' => ['.s'],
848
849 # With assembly we still use the C linker.
850 '_finish' => \&lang_c_finish);
851
852# Preprocessed Assembler.
853register_language ('name' => 'cppasm',
854 'Name' => 'Preprocessed Assembler',
855 'config_vars' => ['CCAS', 'CCASFLAGS'],
856
857 'autodep' => 'CCAS',
858 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
859 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
860 'compiler' => 'CPPASCOMPILE',
861 'compile_flag' => '-c',
862 'output_flag' => '-o',
863 'extensions' => ['.S'],
864
865 # With assembly we still use the C linker.
866 '_finish' => \&lang_c_finish);
867
868# Fortran 77
869register_language ('name' => 'f77',
870 'Name' => 'Fortran 77',
871 'config_vars' => ['F77'],
872 'linker' => 'F77LINK',
873 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
874 'flags' => ['FFLAGS'],
875 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
876 'compiler' => 'F77COMPILE',
877 'compile_flag' => '-c',
878 'output_flag' => '-o',
879 'libtool_tag' => 'F77',
880 'lder' => 'F77LD',
881 'ld' => '$(F77)',
882 'pure' => 1,
883 'extensions' => ['.f', '.for']);
884
885# Fortran
886register_language ('name' => 'fc',
887 'Name' => 'Fortran',
888 'config_vars' => ['FC'],
889 'linker' => 'FCLINK',
890 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
891 'flags' => ['FCFLAGS'],
892 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
893 'compiler' => 'FCCOMPILE',
894 'compile_flag' => '-c',
895 'output_flag' => '-o',
896 'lder' => 'FCLD',
897 'ld' => '$(FC)',
898 'pure' => 1,
899 'extensions' => ['.f90', '.f95']);
900
901# Preprocessed Fortran
902register_language ('name' => 'ppfc',
903 'Name' => 'Preprocessed Fortran',
904 'config_vars' => ['FC'],
905 'linker' => 'FCLINK',
906 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
907 'lder' => 'FCLD',
908 'ld' => '$(FC)',
909 'flags' => ['FCFLAGS', 'CPPFLAGS'],
910 'compiler' => 'PPFCCOMPILE',
911 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
912 'compile_flag' => '-c',
913 'output_flag' => '-o',
914 'libtool_tag' => 'FC',
915 'pure' => 1,
916 'extensions' => ['.F90','.F95']);
917
918# Preprocessed Fortran 77
919#
920# The current support for preprocessing Fortran 77 just involves
921# passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
922# $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
923# this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
924# for `make' Version 3.76 Beta' (specifically, from info file
925# `(make)Catalogue of Rules').
926#
927# A better approach would be to write an Autoconf test
928# (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
929# Fortran 77 compilers know how to do preprocessing. The Autoconf
930# macro AC_PROG_FPP should test the Fortran 77 compiler first for
931# preprocessing capabilities, and then fall back on cpp (if cpp were
932# available).
933register_language ('name' => 'ppf77',
934 'Name' => 'Preprocessed Fortran 77',
935 'config_vars' => ['F77'],
936 'linker' => 'F77LINK',
937 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
938 'lder' => 'F77LD',
939 'ld' => '$(F77)',
940 'flags' => ['FFLAGS', 'CPPFLAGS'],
941 'compiler' => 'PPF77COMPILE',
942 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
943 'compile_flag' => '-c',
944 'output_flag' => '-o',
945 'libtool_tag' => 'F77',
946 'pure' => 1,
947 'extensions' => ['.F']);
948
949# Ratfor.
950register_language ('name' => 'ratfor',
951 'Name' => 'Ratfor',
952 'config_vars' => ['F77'],
953 'linker' => 'F77LINK',
954 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
955 'lder' => 'F77LD',
956 'ld' => '$(F77)',
957 'flags' => ['RFLAGS', 'FFLAGS'],
958 # FIXME also FFLAGS.
959 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
960 'compiler' => 'RCOMPILE',
961 'compile_flag' => '-c',
962 'output_flag' => '-o',
963 'libtool_tag' => 'F77',
964 'pure' => 1,
965 'extensions' => ['.r']);
966
967# Java via gcj.
968register_language ('name' => 'java',
969 'Name' => 'Java',
970 'config_vars' => ['GCJ'],
971 'linker' => 'GCJLINK',
972 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
973 'autodep' => 'GCJ',
974 'flags' => ['GCJFLAGS'],
975 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
976 'compiler' => 'GCJCOMPILE',
977 'compile_flag' => '-c',
978 'output_flag' => '-o',
979 'libtool_tag' => 'GCJ',
980 'lder' => 'GCJLD',
981 'ld' => '$(GCJ)',
982 'pure' => 1,
983 'extensions' => ['.java', '.class', '.zip', '.jar']);
984
985################################################################
986
987# Error reporting functions.
988
989# err_am ($MESSAGE, [%OPTIONS])
990# -----------------------------
991# Uncategorized errors about the current Makefile.am.
992sub err_am ($;%)
993{
994 msg_am ('error', @_);
995}
996
997# err_ac ($MESSAGE, [%OPTIONS])
998# -----------------------------
999# Uncategorized errors about configure.ac.
1000sub err_ac ($;%)
1001{
1002 msg_ac ('error', @_);
1003}
1004
1005# msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1006# ---------------------------------------
1007# Messages about about the current Makefile.am.
1008sub msg_am ($$;%)
1009{
1010 my ($channel, $msg, %opts) = @_;
1011 msg $channel, "${am_file}.am", $msg, %opts;
1012}
1013
1014# msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1015# ---------------------------------------
1016# Messages about about configure.ac.
1017sub msg_ac ($$;%)
1018{
1019 my ($channel, $msg, %opts) = @_;
1020 msg $channel, $configure_ac, $msg, %opts;
1021}
1022
1023################################################################
1024
1025# subst ($TEXT)
1026# -------------
1027# Return a configure-style substitution using the indicated text.
1028# We do this to avoid having the substitutions directly in automake.in;
1029# when we do that they are sometimes removed and this causes confusion
1030# and bugs.
1031sub subst ($)
1032{
1033 my ($text) = @_;
1034 return '@' . $text . '@';
1035}
1036
1037################################################################
1038
1039
1040# $BACKPATH
1041# &backname ($REL-DIR)
1042# --------------------
1043# If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1044# For instance `src/foo' => `../..'.
1045# Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1046sub backname ($)
1047{
1048 my ($file) = @_;
1049 my @res;
1050 foreach (split (/\//, $file))
1051 {
1052 next if $_ eq '.' || $_ eq '';
1053 if ($_ eq '..')
1054 {
1055 pop @res;
1056 }
1057 else
1058 {
1059 push (@res, '..');
1060 }
1061 }
1062 return join ('/', @res) || '.';
1063}
1064
1065################################################################
1066
1067
1068# Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1069sub handle_options
1070{
1071 my $var = var ('AUTOMAKE_OPTIONS');
1072 if ($var)
1073 {
1074 if ($var->has_conditional_contents)
1075 {
1076 msg_var ('unsupported', $var,
1077 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1078 }
1079 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1080 location => 1))
1081 {
1082 my ($loc, $value) = @$locvals;
1083 return 1 if (process_option_list ($loc, $value))
1084 }
1085 }
1086
1087 if ($strictness == GNITS)
1088 {
1089 set_option ('readme-alpha', INTERNAL);
1090 set_option ('std-options', INTERNAL);
1091 set_option ('check-news', INTERNAL);
1092 }
1093
1094 return 0;
1095}
1096
1097# shadow_unconditionally ($varname, $where)
1098# -----------------------------------------
1099# Return a $(variable) that contains all possible values
1100# $varname can take.
1101# If the VAR wasn't defined conditionally, return $(VAR).
1102# Otherwise we create a am__VAR_DIST variable which contains
1103# all possible values, and return $(am__VAR_DIST).
1104sub shadow_unconditionally ($$)
1105{
1106 my ($varname, $where) = @_;
1107 my $var = var $varname;
1108 if ($var->has_conditional_contents)
1109 {
1110 $varname = "am__${varname}_DIST";
1111 my @files = uniq ($var->value_as_list_recursive);
1112 define_pretty_variable ($varname, TRUE, $where, @files);
1113 }
1114 return "\$($varname)"
1115}
1116
1117# get_object_extension ($EXTENSION)
1118# ---------------------------------
1119# Prefix $EXTENSION with $U if ansi2knr is in use.
1120sub get_object_extension ($)
1121{
1122 my ($extension) = @_;
1123
1124 # Check for automatic de-ANSI-fication.
1125 $extension = '$U' . $extension
1126 if option 'ansi2knr';
1127
1128 $get_object_extension_was_run = 1;
1129
1130 return $extension;
1131}
1132
1133# check_user_variables (@LIST)
1134# ----------------------------
1135# Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1136# otherwise.
1137sub check_user_variables (@)
1138{
1139 my @dont_override = @_;
1140 foreach my $flag (@dont_override)
1141 {
1142 my $var = var $flag;
1143 if ($var)
1144 {
1145 for my $cond ($var->conditions->conds)
1146 {
1147 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1148 {
1149 msg_cond_var ('gnu', $cond, $flag,
1150 "`$flag' is a user variable, "
1151 . "you should not override it;\n"
1152 . "use `AM_$flag' instead.");
1153 }
1154 }
1155 }
1156 }
1157}
1158
1159# Call finish function for each language that was used.
1160sub handle_languages
1161{
1162 if (! option 'no-dependencies')
1163 {
1164 # Include auto-dep code. Don't include it if DEP_FILES would
1165 # be empty.
1166 if (&saw_sources_p (0) && keys %dep_files)
1167 {
1168 # Set location of depcomp.
1169 &define_variable ('depcomp',
1170 "\$(SHELL) $am_config_aux_dir/depcomp",
1171 INTERNAL);
1172 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1173
1174 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1175
1176 my @deplist = sort keys %dep_files;
1177 # Generate each `include' individually. Irix 6 make will
1178 # not properly include several files resulting from a
1179 # variable expansion; generating many separate includes
1180 # seems safest.
1181 $output_rules .= "\n";
1182 foreach my $iter (@deplist)
1183 {
1184 $output_rules .= (subst ('AMDEP_TRUE')
1185 . subst ('am__include')
1186 . ' '
1187 . subst ('am__quote')
1188 . $iter
1189 . subst ('am__quote')
1190 . "\n");
1191 }
1192
1193 # Compute the set of directories to remove in distclean-depend.
1194 my @depdirs = uniq (map { dirname ($_) } @deplist);
1195 $output_rules .= &file_contents ('depend',
1196 new Automake::Location,
1197 DEPDIRS => "@depdirs");
1198 }
1199 }
1200 else
1201 {
1202 &define_variable ('depcomp', '', INTERNAL);
1203 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1204 }
1205
1206 my %done;
1207
1208 # Is the c linker needed?
1209 my $needs_c = 0;
1210 foreach my $ext (sort keys %extension_seen)
1211 {
1212 next unless $extension_map{$ext};
1213
1214 my $lang = $languages{$extension_map{$ext}};
1215
1216 my $rule_file = $lang->rule_file || 'depend2';
1217
1218 # Get information on $LANG.
1219 my $pfx = $lang->autodep;
1220 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1221
1222 my ($AMDEP, $FASTDEP) =
1223 (option 'no-dependencies' || $lang->autodep eq 'no')
1224 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1225
1226 my %transform = ('EXT' => $ext,
1227 'PFX' => $pfx,
1228 'FPFX' => $fpfx,
1229 'AMDEP' => $AMDEP,
1230 'FASTDEP' => $FASTDEP,
1231 '-c' => $lang->compile_flag || '',
1232 # These are not used, but they need to be defined
1233 # so &transform do not complain.
1234 SUBDIROBJ => 0,
1235 'DERIVED-EXT' => 'BUG',
1236 DIST_SOURCE => 1,
1237 );
1238
1239 # Generate the appropriate rules for this extension.
1240 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1241 || defined $lang->compile)
1242 {
1243 # Some C compilers don't support -c -o. Use it only if really
1244 # needed.
1245 my $output_flag = $lang->output_flag || '';
1246 $output_flag = '-o'
1247 if (! $output_flag
1248 && $lang->name eq 'c'
1249 && option 'subdir-objects');
1250
1251 # Compute a possible derived extension.
1252 # This is not used by depend2.am.
1253 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1254
1255 # When we output an inference rule like `.c.o:' we
1256 # have two cases to consider: either subdir-objects
1257 # is used, or it is not.
1258 #
1259 # In the latter case the rule is used to build objects
1260 # in the current directory, and dependencies always
1261 # go into `./$(DEPDIR)/'. We can hard-code this value.
1262 #
1263 # In the former case the rule can be used to build
1264 # objects in sub-directories too. Dependencies should
1265 # go into the appropriate sub-directories, e.g.,
1266 # `sub/$(DEPDIR)/'. The value of this directory
1267 # needs to be computed on-the-fly.
1268 #
1269 # DEPBASE holds the name of this directory, plus the
1270 # basename part of the object file (extensions Po, TPo,
1271 # Plo, TPlo will be added later as appropriate). It is
1272 # either hardcoded, or a shell variable (`$depbase') that
1273 # will be computed by the rule.
1274 my $depbase =
1275 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1276 $output_rules .=
1277 file_contents ($rule_file,
1278 new Automake::Location,
1279 %transform,
1280 GENERIC => 1,
1281
1282 'DERIVED-EXT' => $der_ext,
1283
1284 DEPBASE => $depbase,
1285 BASE => '$*',
1286 SOURCE => '$<',
1287 OBJ => '$@',
1288 OBJOBJ => '$@',
1289 LTOBJ => '$@',
1290
1291 COMPILE => '$(' . $lang->compiler . ')',
1292 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1293 -o => $output_flag,
1294 SUBDIROBJ => !! option 'subdir-objects');
1295 }
1296
1297 # Now include code for each specially handled object with this
1298 # language.
1299 my %seen_files = ();
1300 foreach my $file (@{$lang_specific_files{$lang->name}})
1301 {
1302 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1303
1304 # We might see a given object twice, for instance if it is
1305 # used under different conditions.
1306 next if defined $seen_files{$obj};
1307 $seen_files{$obj} = 1;
1308
1309 prog_error ("found " . $lang->name .
1310 " in handle_languages, but compiler not defined")
1311 unless defined $lang->compile;
1312
1313 my $obj_compile = $lang->compile;
1314
1315 # Rewrite each occurrence of `AM_$flag' in the compile
1316 # rule into `${derived}_$flag' if it exists.
1317 for my $flag (@{$lang->flags})
1318 {
1319 my $val = "${derived}_$flag";
1320 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1321 if set_seen ($val);
1322 }
1323
1324 my $libtool_tag = '';
1325 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1326 {
1327 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1328 }
1329
1330 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1331 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1332
1333 my $obj_ltcompile =
1334 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1335 . "--mode=compile $obj_compile";
1336
1337 # We _need_ `-o' for per object rules.
1338 my $output_flag = $lang->output_flag || '-o';
1339
1340 my $depbase = dirname ($obj);
1341 $depbase = ''
1342 if $depbase eq '.';
1343 $depbase .= '/'
1344 unless $depbase eq '';
1345 $depbase .= '$(DEPDIR)/' . basename ($obj);
1346
1347 # Support for deansified files in subdirectories is ugly
1348 # enough to deserve an explanation.
1349 #
1350 # A Note about normal ansi2knr processing first. On
1351 #
1352 # AUTOMAKE_OPTIONS = ansi2knr
1353 # bin_PROGRAMS = foo
1354 # foo_SOURCES = foo.c
1355 #
1356 # we generate rules similar to:
1357 #
1358 # foo: foo$U.o; link ...
1359 # foo$U.o: foo$U.c; compile ...
1360 # foo_.c: foo.c; ansi2knr ...
1361 #
1362 # this is fairly compact, and will call ansi2knr depending
1363 # on the value of $U (`' or `_').
1364 #
1365 # It's harder with subdir sources. On
1366 #
1367 # AUTOMAKE_OPTIONS = ansi2knr
1368 # bin_PROGRAMS = foo
1369 # foo_SOURCES = sub/foo.c
1370 #
1371 # we have to create foo_.c in the current directory.
1372 # (Unless the user asks 'subdir-objects'.) This is important
1373 # in case the same file (`foo.c') is compiled from other
1374 # directories with different cpp options: foo_.c would
1375 # be preprocessed for only one set of options if it were
1376 # put in the subdirectory.
1377 #
1378 # Because foo$U.o must be built from either foo_.c or
1379 # sub/foo.c we can't be as concise as in the first example.
1380 # Instead we output
1381 #
1382 # foo: foo$U.o; link ...
1383 # foo_.o: foo_.c; compile ...
1384 # foo.o: sub/foo.c; compile ...
1385 # foo_.c: foo.c; ansi2knr ...
1386 #
1387 # This is why we'll now transform $rule_file twice
1388 # if we detect this case.
1389 # A first time we output the compile rule with `$U'
1390 # replaced by `_' and the source directory removed,
1391 # and another time we simply remove `$U'.
1392 #
1393 # Note that at this point $source (as computed by
1394 # &handle_single_transform) is `sub/foo$U.c'.
1395 # This can be confusing: it can be used as-is when
1396 # subdir-objects is set, otherwise you have to know
1397 # it really means `foo_.c' or `sub/foo.c'.
1398 my $objdir = dirname ($obj);
1399 my $srcdir = dirname ($source);
1400 if ($lang->ansi && $obj =~ /\$U/)
1401 {
1402 prog_error "`$obj' contains \$U, but `$source' doesn't."
1403 if $source !~ /\$U/;
1404
1405 (my $source_ = $source) =~ s/\$U/_/g;
1406 # Output an additional rule if _.c and .c are not in
1407 # the same directory. (_.c is always in $objdir.)
1408 if ($objdir ne $srcdir)
1409 {
1410 (my $obj_ = $obj) =~ s/\$U/_/g;
1411 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1412 $source_ = basename ($source_);
1413
1414 $output_rules .=
1415 file_contents ($rule_file,
1416 new Automake::Location,
1417 %transform,
1418 GENERIC => 0,
1419
1420 DEPBASE => $depbase_,
1421 BASE => $obj_,
1422 SOURCE => $source_,
1423 OBJ => "$obj_$myext",
1424 OBJOBJ => "$obj_.obj",
1425 LTOBJ => "$obj_.lo",
1426
1427 COMPILE => $obj_compile,
1428 LTCOMPILE => $obj_ltcompile,
1429 -o => $output_flag,
1430 %file_transform);
1431 $obj =~ s/\$U//g;
1432 $depbase =~ s/\$U//g;
1433 $source =~ s/\$U//g;
1434 }
1435 }
1436
1437 $output_rules .=
1438 file_contents ($rule_file,
1439 new Automake::Location,
1440 %transform,
1441 GENERIC => 0,
1442
1443 DEPBASE => $depbase,
1444 BASE => $obj,
1445 SOURCE => $source,
1446 # Use $myext and not `.o' here, in case
1447 # we are actually building a new source
1448 # file -- e.g. via yacc.
1449 OBJ => "$obj$myext",
1450 OBJOBJ => "$obj.obj",
1451 LTOBJ => "$obj.lo",
1452
1453 COMPILE => $obj_compile,
1454 LTCOMPILE => $obj_ltcompile,
1455 -o => $output_flag,
1456 %file_transform);
1457 }
1458
1459 # The rest of the loop is done once per language.
1460 next if defined $done{$lang};
1461 $done{$lang} = 1;
1462
1463 # Load the language dependent Makefile chunks.
1464 my %lang = map { uc ($_) => 0 } keys %languages;
1465 $lang{uc ($lang->name)} = 1;
1466 $output_rules .= file_contents ('lang-compile',
1467 new Automake::Location,
1468 %transform, %lang);
1469
1470 # If the source to a program consists entirely of code from a
1471 # `pure' language, for instance C++ or Fortran 77, then we
1472 # don't need the C compiler code. However if we run into
1473 # something unusual then we do generate the C code. There are
1474 # probably corner cases here that do not work properly.
1475 # People linking Java code to Fortran code deserve pain.
1476 $needs_c ||= ! $lang->pure;
1477
1478 define_compiler_variable ($lang)
1479 if ($lang->compile);
1480
1481 define_linker_variable ($lang)
1482 if ($lang->link);
1483
1484 require_variables ("$am_file.am", $lang->Name . " source seen",
1485 TRUE, @{$lang->config_vars});
1486
1487 # Call the finisher.
1488 $lang->finish;
1489
1490 # Flags listed in `->flags' are user variables (per GNU Standards),
1491 # they should not be overridden in the Makefile...
1492 my @dont_override = @{$lang->flags};
1493 # ... and so is LDFLAGS.
1494 push @dont_override, 'LDFLAGS' if $lang->link;
1495
1496 check_user_variables @dont_override;
1497 }
1498
1499 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1500 # suffix rule was learned), don't bother with the C stuff. But if
1501 # anything else creeps in, then use it.
1502 $needs_c = 1
1503 if $need_link || suffix_rules_count > 1;
1504
1505 if ($needs_c)
1506 {
1507 &define_compiler_variable ($languages{'c'})
1508 unless defined $done{$languages{'c'}};
1509 define_linker_variable ($languages{'c'});
1510 }
1511}
1512
1513
1514# append_exeext { PREDICATE } $MACRO
1515# ----------------------------------
1516# Append $(EXEEXT) to each filename in $F appearing in the Makefile
1517# variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1518# ignored.
1519#
1520# This is typically used on all filenames of *_PROGRAMS, and filenames
1521# of TESTS that are programs.
1522sub append_exeext (&$)
1523{
1524 my ($pred, $macro) = @_;
1525
1526 transform_variable_recursively
1527 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1528 sub {
1529 my ($subvar, $val, $cond, $full_cond) = @_;
1530 # Append $(EXEEXT) unless the user did it already, or it's a
1531 # @substitution@.
1532 $val .= '$(EXEEXT)'
1533 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1534 return $val;
1535 });
1536}
1537
1538
1539# Check to make sure a source defined in LIBOBJS is not explicitly
1540# mentioned. This is a separate function (as opposed to being inlined
1541# in handle_source_transform) because it isn't always appropriate to
1542# do this check.
1543sub check_libobjs_sources
1544{
1545 my ($one_file, $unxformed) = @_;
1546
1547 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1548 'dist_EXTRA_', 'nodist_EXTRA_')
1549 {
1550 my @files;
1551 my $varname = $prefix . $one_file . '_SOURCES';
1552 my $var = var ($varname);
1553 if ($var)
1554 {
1555 @files = $var->value_as_list_recursive;
1556 }
1557 elsif ($prefix eq '')
1558 {
1559 @files = ($unxformed . '.c');
1560 }
1561 else
1562 {
1563 next;
1564 }
1565
1566 foreach my $file (@files)
1567 {
1568 err_var ($prefix . $one_file . '_SOURCES',
1569 "automatically discovered file `$file' should not" .
1570 " be explicitly mentioned")
1571 if defined $libsources{$file};
1572 }
1573 }
1574}
1575
1576
1577# @OBJECTS
1578# handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1579# -----------------------------------------------------------------------------
1580# Does much of the actual work for handle_source_transform.
1581# Arguments are:
1582# $VAR is the name of the variable that the source filenames come from
1583# $TOPPARENT is the name of the _SOURCES variable which is being processed
1584# $DERIVED is the name of resulting executable or library
1585# $OBJ is the object extension (e.g., `$U.lo')
1586# $FILE the source file to transform
1587# %TRANSFORM contains extras arguments to pass to file_contents
1588# when producing explicit rules
1589# Result is a list of the names of objects
1590# %linkers_used will be updated with any linkers needed
1591sub handle_single_transform ($$$$$%)
1592{
1593 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1594 my @files = ($_file);
1595 my @result = ();
1596 my $nonansi_obj = $obj;
1597 $nonansi_obj =~ s/\$U//g;
1598
1599 # Turn sources into objects. We use a while loop like this
1600 # because we might add to @files in the loop.
1601 while (scalar @files > 0)
1602 {
1603 $_ = shift @files;
1604
1605 # Configure substitutions in _SOURCES variables are errors.
1606 if (/^\@.*\@$/)
1607 {
1608 my $parent_msg = '';
1609 $parent_msg = "\nand is referred to from `$topparent'"
1610 if $topparent ne $var->name;
1611 err_var ($var,
1612 "`" . $var->name . "' includes configure substitution `$_'"
1613 . $parent_msg . ";\nconfigure " .
1614 "substitutions are not allowed in _SOURCES variables");
1615 next;
1616 }
1617
1618 # If the source file is in a subdirectory then the `.o' is put
1619 # into the current directory, unless the subdir-objects option
1620 # is in effect.
1621
1622 # Split file name into base and extension.
1623 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1624 my $full = $_;
1625 my $directory = $1 || '';
1626 my $base = $2;
1627 my $extension = $3;
1628
1629 # We must generate a rule for the object if it requires its own flags.
1630 my $renamed = 0;
1631 my ($linker, $object);
1632
1633 # This records whether we've seen a derived source file (e.g.
1634 # yacc output).
1635 my $derived_source = 0;
1636
1637 # This holds the `aggregate context' of the file we are
1638 # currently examining. If the file is compiled with
1639 # per-object flags, then it will be the name of the object.
1640 # Otherwise it will be `AM'. This is used by the target hook
1641 # language function.
1642 my $aggregate = 'AM';
1643
1644 $extension = &derive_suffix ($extension, $nonansi_obj);
1645 my $lang;
1646 if ($extension_map{$extension} &&
1647 ($lang = $languages{$extension_map{$extension}}))
1648 {
1649 # Found the language, so see what it says.
1650 &saw_extension ($extension);
1651
1652 # Do we have per-executable flags for this executable?
1653 my $have_per_exec_flags = 0;
1654 my @peflags = @{$lang->flags};
1655 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1656 foreach my $flag (@peflags)
1657 {
1658 if (set_seen ("${derived}_$flag"))
1659 {
1660 $have_per_exec_flags = 1;
1661 last;
1662 }
1663 }
1664
1665 # Note: computed subr call. The language rewrite function
1666 # should return one of the LANG_* constants. It could
1667 # also return a list whose first value is such a constant
1668 # and whose second value is a new source extension which
1669 # should be applied. This means this particular language
1670 # generates another source file which we must then process
1671 # further.
1672 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1673 my ($r, $source_extension)
1674 = &$subr ($directory, $base, $extension,
1675 $nonansi_obj, $have_per_exec_flags, $var);
1676 # Skip this entry if we were asked not to process it.
1677 next if $r == LANG_IGNORE;
1678
1679 # Now extract linker and other info.
1680 $linker = $lang->linker;
1681
1682 my $this_obj_ext;
1683 if (defined $source_extension)
1684 {
1685 $this_obj_ext = $source_extension;
1686 $derived_source = 1;
1687 }
1688 elsif ($lang->ansi)
1689 {
1690 $this_obj_ext = $obj;
1691 }
1692 else
1693 {
1694 $this_obj_ext = $nonansi_obj;
1695 }
1696 $object = $base . $this_obj_ext;
1697
1698 if ($have_per_exec_flags)
1699 {
1700 # We have a per-executable flag in effect for this
1701 # object. In this case we rewrite the object's
1702 # name to ensure it is unique.
1703
1704 # We choose the name `DERIVED_OBJECT' to ensure
1705 # (1) uniqueness, and (2) continuity between
1706 # invocations. However, this will result in a
1707 # name that is too long for losing systems, in
1708 # some situations. So we provide _SHORTNAME to
1709 # override.
1710
1711 my $dname = $derived;
1712 my $var = var ($derived . '_SHORTNAME');
1713 if ($var)
1714 {
1715 # FIXME: should use the same Condition as
1716 # the _SOURCES variable. But this is really
1717 # silly overkill -- nobody should have
1718 # conditional shortnames.
1719 $dname = $var->variable_value;
1720 }
1721 $object = $dname . '-' . $object;
1722
1723 prog_error ($lang->name . " flags defined without compiler")
1724 if ! defined $lang->compile;
1725
1726 $renamed = 1;
1727 }
1728
1729 # If rewrite said it was ok, put the object into a
1730 # subdir.
1731 if ($r == LANG_SUBDIR && $directory ne '')
1732 {
1733 $object = $directory . '/' . $object;
1734 }
1735
1736 # If the object file has been renamed (because per-target
1737 # flags are used) we cannot compile the file with an
1738 # inference rule: we need an explicit rule.
1739 #
1740 # If the source is in a subdirectory and the object is in
1741 # the current directory, we also need an explicit rule.
1742 #
1743 # If both source and object files are in a subdirectory
1744 # (this happens when the subdir-objects option is used),
1745 # then the inference will work.
1746 #
1747 # The latter case deserves a historical note. When the
1748 # subdir-objects option was added on 1999-04-11 it was
1749 # thought that inferences rules would work for
1750 # subdirectory objects too. Later, on 1999-11-22,
1751 # automake was changed to output explicit rules even for
1752 # subdir-objects. Nobody remembers why, but this occurred
1753 # soon after the merge of the user-dep-gen-branch so it
1754 # might be related. In late 2003 people complained about
1755 # the size of the generated Makefile.ins (libgcj, with
1756 # 2200+ subdir objects was reported to have a 9MB
1757 # Makefile), so we now rely on inference rules again.
1758 # Maybe we'll run across the same issue as in the past,
1759 # but at least this time we can document it. However since
1760 # dependency tracking has evolved it is possible that
1761 # our old problem no longer exists.
1762 # Using inference rules for subdir-objects has been tested
1763 # with GNU make, Solaris make, Ultrix make, BSD make,
1764 # HP-UX make, and OSF1 make successfully.
1765 if ($renamed
1766 || ($directory ne '' && ! option 'subdir-objects')
1767 # We must also use specific rules for a nodist_ source
1768 # if its language requests it.
1769 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1770 {
1771 my $obj_sans_ext = substr ($object, 0,
1772 - length ($this_obj_ext));
1773 my $full_ansi = $full;
1774 if ($lang->ansi && option 'ansi2knr')
1775 {
1776 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1777 $obj_sans_ext .= '$U';
1778 }
1779
1780 my @specifics = ($full_ansi, $obj_sans_ext,
1781 # Only use $this_obj_ext in the derived
1782 # source case because in the other case we
1783 # *don't* want $(OBJEXT) to appear here.
1784 ($derived_source ? $this_obj_ext : '.o'));
1785
1786 # If we renamed the object then we want to use the
1787 # per-executable flag name. But if this is simply a
1788 # subdir build then we still want to use the AM_ flag
1789 # name.
1790 if ($renamed)
1791 {
1792 unshift @specifics, $derived;
1793 $aggregate = $derived;
1794 }
1795 else
1796 {
1797 unshift @specifics, 'AM';
1798 }
1799
1800 # Each item on this list is a reference to a list consisting
1801 # of four values followed by additional transform flags for
1802 # file_contents. The four values are the derived flag prefix
1803 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1804 # source file, the base name of the output file, and
1805 # the extension for the object file.
1806 push (@{$lang_specific_files{$lang->name}},
1807 [@specifics, %transform]);
1808 }
1809 }
1810 elsif ($extension eq $nonansi_obj)
1811 {
1812 # This is probably the result of a direct suffix rule.
1813 # In this case we just accept the rewrite.
1814 $object = "$base$extension";
1815 $object = "$directory/$object" if $directory ne '';
1816 $linker = '';
1817 }
1818 else
1819 {
1820 # No error message here. Used to have one, but it was
1821 # very unpopular.
1822 # FIXME: we could potentially do more processing here,
1823 # perhaps treating the new extension as though it were a
1824 # new source extension (as above). This would require
1825 # more restructuring than is appropriate right now.
1826 next;
1827 }
1828
1829 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1830 if (defined $object_map{$object}
1831 && $object_map{$object} ne $full);
1832
1833 my $comp_val = (($object =~ /\.lo$/)
1834 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1835 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1836 if (defined $object_compilation_map{$comp_obj}
1837 && $object_compilation_map{$comp_obj} != 0
1838 # Only see the error once.
1839 && ($object_compilation_map{$comp_obj}
1840 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1841 && $object_compilation_map{$comp_obj} != $comp_val)
1842 {
1843 err_am "object `$comp_obj' created both with libtool and without";
1844 }
1845 $object_compilation_map{$comp_obj} |= $comp_val;
1846
1847 if (defined $lang)
1848 {
1849 # Let the language do some special magic if required.
1850 $lang->target_hook ($aggregate, $object, $full, %transform);
1851 }
1852
1853 if ($derived_source)
1854 {
1855 prog_error ($lang->name . " has automatic dependency tracking")
1856 if $lang->autodep ne 'no';
1857 # Make sure this new source file is handled next. That will
1858 # make it appear to be at the right place in the list.
1859 unshift (@files, $object);
1860 # Distribute derived sources unless the source they are
1861 # derived from is not.
1862 &push_dist_common ($object)
1863 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1864 next;
1865 }
1866
1867 $linkers_used{$linker} = 1;
1868
1869 push (@result, $object);
1870
1871 if (! defined $object_map{$object})
1872 {
1873 my @dep_list = ();
1874 $object_map{$object} = $full;
1875
1876 # If resulting object is in subdir, we need to make
1877 # sure the subdir exists at build time.
1878 if ($object =~ /\//)
1879 {
1880 # FIXME: check that $DIRECTORY is somewhere in the
1881 # project
1882
1883 # For Java, the way we're handling it right now, a
1884 # `..' component doesn't make sense.
1885 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1886 {
1887 err_am "`$full' should not contain a `..' component";
1888 }
1889
1890 # Make sure object is removed by `make mostlyclean'.
1891 $compile_clean_files{$object} = MOSTLY_CLEAN;
1892 # If we have a libtool object then we also must remove
1893 # the ordinary .o.
1894 if ($object =~ /\.lo$/)
1895 {
1896 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1897 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1898
1899 # Remove any libtool object in this directory.
1900 $libtool_clean_directories{$directory} = 1;
1901 }
1902
1903 push (@dep_list, require_build_directory ($directory));
1904
1905 # If we're generating dependencies, we also want
1906 # to make sure that the appropriate subdir of the
1907 # .deps directory is created.
1908 push (@dep_list,
1909 require_build_directory ($directory . '/$(DEPDIR)'))
1910 unless option 'no-dependencies';
1911 }
1912
1913 &pretty_print_rule ($object . ':', "\t", @dep_list)
1914 if scalar @dep_list > 0;
1915 }
1916
1917 # Transform .o or $o file into .P file (for automatic
1918 # dependency code).
1919 if ($lang && $lang->autodep ne 'no')
1920 {
1921 my $depfile = $object;
1922 $depfile =~ s/\.([^.]*)$/.P$1/;
1923 $depfile =~ s/\$\(OBJEXT\)$/o/;
1924 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1925 . basename ($depfile)} = 1;
1926 }
1927 }
1928
1929 return @result;
1930}
1931
1932
1933# $LINKER
1934# define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1935# $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1936# ---------------------------------------------------------------------------
1937# Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1938#
1939# Arguments are:
1940# $VAR is the name of the _SOURCES variable
1941# $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1942# it will be generated and returned).
1943# $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1944# work done to determine the linker will be).
1945# $ONE_FILE is the canonical (transformed) name of object to build
1946# $OBJ is the object extension (i.e. either `.o' or `.lo').
1947# $TOPPARENT is the _SOURCES variable being processed.
1948# $WHERE context into which this definition is done
1949# %TRANSFORM extra arguments to pass to file_contents when producing
1950# rules
1951#
1952# Result is a pair ($LINKER, $OBJVAR):
1953# $LINKER is a boolean, true if a linker is needed to deal with the objects
1954sub define_objects_from_sources ($$$$$$$%)
1955{
1956 my ($var, $objvar, $nodefine, $one_file,
1957 $obj, $topparent, $where, %transform) = @_;
1958
1959 my $needlinker = "";
1960
1961 transform_variable_recursively
1962 ($var, $objvar, 'am__objects', $nodefine, $where,
1963 # The transform code to run on each filename.
1964 sub {
1965 my ($subvar, $val, $cond, $full_cond) = @_;
1966 my @trans = handle_single_transform ($subvar, $topparent,
1967 $one_file, $obj, $val,
1968 %transform);
1969 $needlinker = "true" if @trans;
1970 return @trans;
1971 });
1972
1973 return $needlinker;
1974}
1975
1976
1977# handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1978# -----------------------------------------------------------------------------
1979# Handle SOURCE->OBJECT transform for one program or library.
1980# Arguments are:
1981# canonical (transformed) name of target to build
1982# actual target of object to build
1983# object extension (i.e., either `.o' or `$o')
1984# location of the source variable
1985# extra arguments to pass to file_contents when producing rules
1986# Return the name of the linker variable that must be used.
1987# Empty return means just use `LINK'.
1988sub handle_source_transform ($$$$%)
1989{
1990 # one_file is canonical name. unxformed is given name. obj is
1991 # object extension.
1992 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1993
1994 my $linker = '';
1995
1996 # No point in continuing if _OBJECTS is defined.
1997 return if reject_var ($one_file . '_OBJECTS',
1998 $one_file . '_OBJECTS should not be defined');
1999
2000 my %used_pfx = ();
2001 my $needlinker;
2002 %linkers_used = ();
2003 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2004 'dist_EXTRA_', 'nodist_EXTRA_')
2005 {
2006 my $varname = $prefix . $one_file . "_SOURCES";
2007 my $var = var $varname;
2008 next unless $var;
2009
2010 # We are going to define _OBJECTS variables using the prefix.
2011 # Then we glom them all together. So we can't use the null
2012 # prefix here as we need it later.
2013 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2014
2015 # Keep track of which prefixes we saw.
2016 $used_pfx{$xpfx} = 1
2017 unless $prefix =~ /EXTRA_/;
2018
2019 push @sources, "\$($varname)";
2020 push @dist_sources, shadow_unconditionally ($varname, $where)
2021 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2022
2023 $needlinker |=
2024 define_objects_from_sources ($varname,
2025 $xpfx . $one_file . '_OBJECTS',
2026 $prefix =~ /EXTRA_/,
2027 $one_file, $obj, $varname, $where,
2028 DIST_SOURCE => ($prefix !~ /^nodist_/),
2029 %transform);
2030 }
2031 if ($needlinker)
2032 {
2033 $linker ||= &resolve_linker (%linkers_used);
2034 }
2035
2036 my @keys = sort keys %used_pfx;
2037 if (scalar @keys == 0)
2038 {
2039 # The default source for libfoo.la is libfoo.c, but for
2040 # backward compatibility we first look at libfoo_la.c
2041 my $old_default_source = "$one_file.c";
2042 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
2043 if ($old_default_source ne $default_source
2044 && (rule $old_default_source
2045 || rule '$(srcdir)/' . $old_default_source
2046 || rule '${srcdir}/' . $old_default_source
2047 || -f $old_default_source))
2048 {
2049 my $loc = $where->clone;
2050 $loc->pop_context;
2051 msg ('obsolete', $loc,
2052 "the default source for `$unxformed' has been changed "
2053 . "to `$default_source'.\n(Using `$old_default_source' for "
2054 . "backward compatibility.)");
2055 $default_source = $old_default_source;
2056 }
2057 # If a rule exists to build this source with a $(srcdir)
2058 # prefix, use that prefix in our variables too. This is for
2059 # the sake of BSD Make.
2060 if (rule '$(srcdir)/' . $default_source
2061 || rule '${srcdir}/' . $default_source)
2062 {
2063 $default_source = '$(srcdir)/' . $default_source;
2064 }
2065
2066 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2067 push (@sources, $default_source);
2068 push (@dist_sources, $default_source);
2069
2070 %linkers_used = ();
2071 my (@result) =
2072 handle_single_transform ($one_file . '_SOURCES',
2073 $one_file . '_SOURCES',
2074 $one_file, $obj,
2075 $default_source, %transform);
2076 $linker ||= &resolve_linker (%linkers_used);
2077 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2078 }
2079 else
2080 {
2081 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2082 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2083 }
2084
2085 # If we want to use `LINK' we must make sure it is defined.
2086 if ($linker eq '')
2087 {
2088 $need_link = 1;
2089 }
2090
2091 return $linker;
2092}
2093
2094
2095# handle_lib_objects ($XNAME, $VAR)
2096# ---------------------------------
2097# Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2098# Also, generate _DEPENDENCIES variable if appropriate.
2099# Arguments are:
2100# transformed name of object being built, or empty string if no object
2101# name of _LDADD/_LIBADD-type variable to examine
2102# Returns 1 if LIBOBJS seen, 0 otherwise.
2103sub handle_lib_objects
2104{
2105 my ($xname, $varname) = @_;
2106
2107 my $var = var ($varname);
2108 prog_error "handle_lib_objects: `$varname' undefined"
2109 unless $var;
2110 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2111 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2112 my $prefix = $1 || 'AM_';
2113
2114 my $seen_libobjs = 0;
2115 my $flagvar = 0;
2116
2117 transform_variable_recursively
2118 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2119 ! $xname, INTERNAL,
2120 # Transformation function, run on each filename.
2121 sub {
2122 my ($subvar, $val, $cond, $full_cond) = @_;
2123
2124 if ($val =~ /^-/)
2125 {
2126 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2127 if ($val !~ /^-[lL]/ &&
2128 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2129 # for Libtool libraries or programs. (Actually we are a bit
2130 # laxe here since this code also applies to non-libtool
2131 # libraries or programs, for which -dlopen and -dlopreopen
2132 # are pure nonsense. Diagnosing this doesn't seems very
2133 # important: the developer will quickly get complaints from
2134 # the linker.)
2135 $val !~ /^-dl(?:pre)?open$/ &&
2136 # Only get this error once.
2137 ! $flagvar)
2138 {
2139 $flagvar = 1;
2140 # FIXME: should display a stack of nested variables
2141 # as context when $var != $subvar.
2142 err_var ($var, "linker flags such as `$val' belong in "
2143 . "`${prefix}LDFLAGS");
2144 }
2145 return ();
2146 }
2147 elsif ($val !~ /^\@.*\@$/)
2148 {
2149 # Assume we have a file of some sort, and output it into the
2150 # dependency variable. Autoconf substitutions are not output;
2151 # rarely is a new dependency substituted into e.g. foo_LDADD
2152 # -- but bad things (e.g. -lX11) are routinely substituted.
2153 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2154 # and handled specially below.
2155 return $val;
2156 }
2157 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2158 {
2159 handle_LIBOBJS ($subvar, $cond, $1);
2160 $seen_libobjs = 1;
2161 return $val;
2162 }
2163 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2164 {
2165 handle_ALLOCA ($subvar, $cond, $1);
2166 return $val;
2167 }
2168 else
2169 {
2170 return ();
2171 }
2172 });
2173
2174 return $seen_libobjs;
2175}
2176
2177# handle_LIBOBJS_or_ALLOCA ($VAR)
2178# -------------------------------
2179# Definitions common to LIBOBJS and ALLOCA.
2180# VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2181sub handle_LIBOBJS_or_ALLOCA ($)
2182{
2183 my ($var) = @_;
2184
2185 my $dir = '';
2186
2187 # If LIBOBJS files must be built in another directory we have
2188 # to define LIBOBJDIR and ensure the files get cleaned.
2189 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2190 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2191 if ($config_libobj_dir
2192 && $relative_dir ne $config_libobj_dir)
2193 {
2194 if (option 'subdir-objects')
2195 {
2196 # In the top-level Makefile we do not use $(top_builddir), because
2197 # we are already there, and since the targets are built without
2198 # a $(top_builddir), it helps BSD Make to match them with
2199 # dependencies.
2200 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2201 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2202 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2203 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2204 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2205 # be created by libtool as a side-effect of creating LTLIBOBJS).
2206 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2207
2208 }
2209 else
2210 {
2211 error ("`\$($var)' cannot be used outside `$dir' if"
2212 . " `subdir-objects' is not set");
2213 }
2214 }
2215
2216 return $dir;
2217}
2218
2219sub handle_LIBOBJS ($$$)
2220{
2221 my ($var, $cond, $lt) = @_;
2222 my $myobjext = $lt ? 'lo' : 'o';
2223 $lt ||= '';
2224
2225 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2226 if ! keys %libsources;
2227
2228 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2229
2230 foreach my $iter (keys %libsources)
2231 {
2232 if ($iter =~ /\.[cly]$/)
2233 {
2234 &saw_extension ($&);
2235 &saw_extension ('.c');
2236 }
2237
2238 if ($iter =~ /\.h$/)
2239 {
2240 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2241 }
2242 elsif ($iter ne 'alloca.c')
2243 {
2244 my $rewrite = $iter;
2245 $rewrite =~ s/\.c$/.P$myobjext/;
2246 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2247 $rewrite = "^" . quotemeta ($iter) . "\$";
2248 # Only require the file if it is not a built source.
2249 my $bs = var ('BUILT_SOURCES');
2250 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2251 {
2252 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2253 }
2254 }
2255 }
2256}
2257
2258sub handle_ALLOCA ($$$)
2259{
2260 my ($var, $cond, $lt) = @_;
2261 my $myobjext = $lt ? 'lo' : 'o';
2262 $lt ||= '';
2263 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2264
2265 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2266 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2267 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2268 &saw_extension ('.c');
2269}
2270
2271# Canonicalize the input parameter
2272sub canonicalize
2273{
2274 my ($string) = @_;
2275 $string =~ tr/A-Za-z0-9_\@/_/c;
2276 return $string;
2277}
2278
2279# Canonicalize a name, and check to make sure the non-canonical name
2280# is never used. Returns canonical name. Arguments are name and a
2281# list of suffixes to check for.
2282sub check_canonical_spelling
2283{
2284 my ($name, @suffixes) = @_;
2285
2286 my $xname = &canonicalize ($name);
2287 if ($xname ne $name)
2288 {
2289 foreach my $xt (@suffixes)
2290 {
2291 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2292 }
2293 }
2294
2295 return $xname;
2296}
2297
2298
2299# handle_compile ()
2300# -----------------
2301# Set up the compile suite.
2302sub handle_compile ()
2303{
2304 return
2305 unless $get_object_extension_was_run;
2306
2307 # Boilerplate.
2308 my $default_includes = '';
2309 if (! option 'nostdinc')
2310 {
2311 my @incs = ('-I.');
2312
2313 my $var = var 'CONFIG_HEADER';
2314 if ($var)
2315 {
2316 foreach my $hdr (split (' ', $var->variable_value))
2317 {
2318 push @incs, '-I' . dirname ($hdr);
2319 }
2320 }
2321 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2322 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2323 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2324 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2325 # to just append @am__isrc@.
2326 $default_includes = ' ' . uniq (@incs) . subst ('am__isrc');
2327 }
2328
2329 my (@mostly_rms, @dist_rms);
2330 foreach my $item (sort keys %compile_clean_files)
2331 {
2332 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2333 {
2334 push (@mostly_rms, "\t-rm -f $item");
2335 }
2336 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2337 {
2338 push (@dist_rms, "\t-rm -f $item");
2339 }
2340 else
2341 {
2342 prog_error 'invalid entry in %compile_clean_files';
2343 }
2344 }
2345
2346 my ($coms, $vars, $rules) =
2347 &file_contents_internal (1, "$libdir/am/compile.am",
2348 new Automake::Location,
2349 ('DEFAULT_INCLUDES' => $default_includes,
2350 'MOSTLYRMS' => join ("\n", @mostly_rms),
2351 'DISTRMS' => join ("\n", @dist_rms)));
2352 $output_vars .= $vars;
2353 $output_rules .= "$coms$rules";
2354
2355 # Check for automatic de-ANSI-fication.
2356 if (option 'ansi2knr')
2357 {
2358 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2359 my $ansi2knr_dir = '';
2360
2361 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2362 TRUE, "ANSI2KNR", "U");
2363
2364 # topdir is where ansi2knr should be.
2365 if ($ansi2knr_filename eq 'ansi2knr')
2366 {
2367 # Only require ansi2knr files if they should appear in
2368 # this directory.
2369 require_file ($ansi2knr_where, FOREIGN,
2370 'ansi2knr.c', 'ansi2knr.1');
2371
2372 # ansi2knr needs to be built before subdirs, so unshift it.
2373 unshift (@all, '$(ANSI2KNR)');
2374 }
2375 else
2376 {
2377 $ansi2knr_dir = dirname ($ansi2knr_filename);
2378 }
2379
2380 $output_rules .= &file_contents ('ansi2knr',
2381 new Automake::Location,
2382 'ANSI2KNR-DIR' => $ansi2knr_dir);
2383
2384 }
2385}
2386
2387# handle_libtool ()
2388# -----------------
2389# Handle libtool rules.
2390sub handle_libtool
2391{
2392 return unless var ('LIBTOOL');
2393
2394 # Libtool requires some files, but only at top level.
2395 # (Starting with Libtool 2.0 we do not have to bother. These
2396 # requirements are done with AC_REQUIRE_AUX_FILE.)
2397 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2398 if $relative_dir eq '.' && ! $libtool_new_api;
2399
2400 my @libtool_rms;
2401 foreach my $item (sort keys %libtool_clean_directories)
2402 {
2403 my $dir = ($item eq '.') ? '' : "$item/";
2404 # .libs is for Unix, _libs for DOS.
2405 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2406 }
2407
2408 check_user_variables 'LIBTOOLFLAGS';
2409
2410 # Output the libtool compilation rules.
2411 $output_rules .= &file_contents ('libtool',
2412 new Automake::Location,
2413 LTRMS => join ("\n", @libtool_rms));
2414}
2415
2416# handle_programs ()
2417# ------------------
2418# Handle C programs.
2419sub handle_programs
2420{
2421 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2422 'bin', 'sbin', 'libexec', 'pkglib',
2423 'noinst', 'check');
2424 return if ! @proglist;
2425
2426 my $seen_global_libobjs =
2427 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2428
2429 foreach my $pair (@proglist)
2430 {
2431 my ($where, $one_file) = @$pair;
2432
2433 my $seen_libobjs = 0;
2434 my $obj = get_object_extension '.$(OBJEXT)';
2435
2436 # Strip any $(EXEEXT) suffix the user might have added, or this
2437 # will confuse &handle_source_transform and &check_canonical_spelling.
2438 # We'll add $(EXEEXT) back later anyway.
2439 $one_file =~ s/\$\(EXEEXT\)$//;
2440
2441 $known_programs{$one_file} = $where;
2442
2443 # Canonicalize names and check for misspellings.
2444 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2445 '_SOURCES', '_OBJECTS',
2446 '_DEPENDENCIES');
2447
2448 $where->push_context ("while processing program `$one_file'");
2449 $where->set (INTERNAL->get);
2450
2451 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2452 NONLIBTOOL => 1, LIBTOOL => 0);
2453
2454 if (var ($xname . "_LDADD"))
2455 {
2456 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2457 }
2458 else
2459 {
2460 # User didn't define prog_LDADD override. So do it.
2461 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2462
2463 # This does a bit too much work. But we need it to
2464 # generate _DEPENDENCIES when appropriate.
2465 if (var ('LDADD'))
2466 {
2467 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2468 }
2469 }
2470
2471 reject_var ($xname . '_LIBADD',
2472 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2473
2474 set_seen ($xname . '_DEPENDENCIES');
2475 set_seen ($xname . '_LDFLAGS');
2476
2477 # Determine program to use for link.
2478 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2479
2480 # If the resulting program lies into a subdirectory,
2481 # make sure this directory will exist.
2482 my $dirstamp = require_build_directory_maybe ($one_file);
2483
2484 $output_rules .= &file_contents ('program',
2485 $where,
2486 PROGRAM => $one_file,
2487 XPROGRAM => $xname,
2488 XLINK => $xlink,
2489 DIRSTAMP => $dirstamp,
2490 EXEEXT => '$(EXEEXT)');
2491
2492 if ($seen_libobjs || $seen_global_libobjs)
2493 {
2494 if (var ($xname . '_LDADD'))
2495 {
2496 &check_libobjs_sources ($xname, $xname . '_LDADD');
2497 }
2498 elsif (var ('LDADD'))
2499 {
2500 &check_libobjs_sources ($xname, 'LDADD');
2501 }
2502 }
2503 }
2504}
2505
2506
2507# handle_libraries ()
2508# -------------------
2509# Handle libraries.
2510sub handle_libraries
2511{
2512 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2513 'lib', 'pkglib', 'noinst', 'check');
2514 return if ! @liblist;
2515
2516 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2517 'noinst', 'check');
2518
2519 if (@prefix)
2520 {
2521 my $var = rvar ($prefix[0] . '_LIBRARIES');
2522 $var->requires_variables ('library used', 'RANLIB');
2523 }
2524
2525 &define_variable ('AR', 'ar', INTERNAL);
2526 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2527
2528 foreach my $pair (@liblist)
2529 {
2530 my ($where, $onelib) = @$pair;
2531
2532 my $seen_libobjs = 0;
2533 # Check that the library fits the standard naming convention.
2534 my $bn = basename ($onelib);
2535 if ($bn !~ /^lib.*\.a$/)
2536 {
2537 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2538 my $suggestion = dirname ($onelib) . "/$bn";
2539 $suggestion =~ s|^\./||g;
2540 msg ('error-gnu/warn', $where,
2541 "`$onelib' is not a standard library name\n"
2542 . "did you mean `$suggestion'?")
2543 }
2544
2545 $where->push_context ("while processing library `$onelib'");
2546 $where->set (INTERNAL->get);
2547
2548 my $obj = get_object_extension '.$(OBJEXT)';
2549
2550 # Canonicalize names and check for misspellings.
2551 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2552 '_OBJECTS', '_DEPENDENCIES',
2553 '_AR');
2554
2555 if (! var ($xlib . '_AR'))
2556 {
2557 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2558 }
2559
2560 # Generate support for conditional object inclusion in
2561 # libraries.
2562 if (var ($xlib . '_LIBADD'))
2563 {
2564 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2565 {
2566 $seen_libobjs = 1;
2567 }
2568 }
2569 else
2570 {
2571 &define_variable ($xlib . "_LIBADD", '', $where);
2572 }
2573
2574 reject_var ($xlib . '_LDADD',
2575 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2576
2577 # Make sure we at look at this.
2578 set_seen ($xlib . '_DEPENDENCIES');
2579
2580 &handle_source_transform ($xlib, $onelib, $obj, $where,
2581 NONLIBTOOL => 1, LIBTOOL => 0);
2582
2583 # If the resulting library lies into a subdirectory,
2584 # make sure this directory will exist.
2585 my $dirstamp = require_build_directory_maybe ($onelib);
2586
2587 $output_rules .= &file_contents ('library',
2588 $where,
2589 LIBRARY => $onelib,
2590 XLIBRARY => $xlib,
2591 DIRSTAMP => $dirstamp);
2592
2593 if ($seen_libobjs)
2594 {
2595 if (var ($xlib . '_LIBADD'))
2596 {
2597 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2598 }
2599 }
2600 }
2601}
2602
2603
2604# handle_ltlibraries ()
2605# ---------------------
2606# Handle shared libraries.
2607sub handle_ltlibraries
2608{
2609 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2610 'noinst', 'lib', 'pkglib', 'check');
2611 return if ! @liblist;
2612
2613 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2614 'noinst', 'check');
2615
2616 if (@prefix)
2617 {
2618 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2619 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2620 }
2621
2622 my %instdirs = ();
2623 my %instconds = ();
2624 my %liblocations = (); # Location (in Makefile.am) of each library.
2625
2626 foreach my $key (@prefix)
2627 {
2628 # Get the installation directory of each library.
2629 (my $dir = $key) =~ s/^nobase_//;
2630 my $var = rvar ($key . '_LTLIBRARIES');
2631
2632 # We reject libraries which are installed in several places
2633 # in the same condition, because we can only specify one
2634 # `-rpath' option.
2635 $var->traverse_recursively
2636 (sub
2637 {
2638 my ($var, $val, $cond, $full_cond) = @_;
2639 my $hcond = $full_cond->human;
2640 my $where = $var->rdef ($cond)->location;
2641 # A library cannot be installed in different directory
2642 # in overlapping conditions.
2643 if (exists $instconds{$val})
2644 {
2645 my ($msg, $acond) =
2646 $instconds{$val}->ambiguous_p ($val, $full_cond);
2647
2648 if ($msg)
2649 {
2650 error ($where, $msg, partial => 1);
2651
2652 my $dirtxt = "installed in `$dir'";
2653 $dirtxt = "built for `$dir'"
2654 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2655 my $dircond =
2656 $full_cond->true ? "" : " in condition $hcond";
2657
2658 error ($where, "`$val' should be $dirtxt$dircond ...",
2659 partial => 1);
2660
2661 my $hacond = $acond->human;
2662 my $adir = $instdirs{$val}{$acond};
2663 my $adirtxt = "installed in `$adir'";
2664 $adirtxt = "built for `$adir'"
2665 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2666 || $adir eq 'check');
2667 my $adircond = $acond->true ? "" : " in condition $hacond";
2668
2669 my $onlyone = ($dir ne $adir) ?
2670 ("\nLibtool libraries can be built for only one "
2671 . "destination.") : "";
2672
2673 error ($liblocations{$val}{$acond},
2674 "... and should also be $adirtxt$adircond.$onlyone");
2675 return;
2676 }
2677 }
2678 else
2679 {
2680 $instconds{$val} = new Automake::DisjConditions;
2681 }
2682 $instdirs{$val}{$full_cond} = $dir;
2683 $liblocations{$val}{$full_cond} = $where;
2684 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2685 },
2686 sub
2687 {
2688 return ();
2689 },
2690 skip_ac_subst => 1);
2691 }
2692
2693 foreach my $pair (@liblist)
2694 {
2695 my ($where, $onelib) = @$pair;
2696
2697 my $seen_libobjs = 0;
2698 my $obj = get_object_extension '.lo';
2699
2700 # Canonicalize names and check for misspellings.
2701 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2702 '_SOURCES', '_OBJECTS',
2703 '_DEPENDENCIES');
2704
2705 # Check that the library fits the standard naming convention.
2706 my $libname_rx = '^lib.*\.la';
2707 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2708 my $ldvar2 = var ('LDFLAGS');
2709 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2710 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2711 {
2712 # Relax name checking for libtool modules.
2713 $libname_rx = '\.la';
2714 }
2715
2716 my $bn = basename ($onelib);
2717 if ($bn !~ /$libname_rx$/)
2718 {
2719 my $type = 'library';
2720 if ($libname_rx eq '\.la')
2721 {
2722 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2723 $type = 'module';
2724 }
2725 else
2726 {
2727 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2728 }
2729 my $suggestion = dirname ($onelib) . "/$bn";
2730 $suggestion =~ s|^\./||g;
2731 msg ('error-gnu/warn', $where,
2732 "`$onelib' is not a standard libtool $type name\n"
2733 . "did you mean `$suggestion'?")
2734 }
2735
2736 $where->push_context ("while processing Libtool library `$onelib'");
2737 $where->set (INTERNAL->get);
2738
2739 # Make sure we look at these.
2740 set_seen ($xlib . '_LDFLAGS');
2741 set_seen ($xlib . '_DEPENDENCIES');
2742
2743 # Generate support for conditional object inclusion in
2744 # libraries.
2745 if (var ($xlib . '_LIBADD'))
2746 {
2747 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2748 {
2749 $seen_libobjs = 1;
2750 }
2751 }
2752 else
2753 {
2754 &define_variable ($xlib . "_LIBADD", '', $where);
2755 }
2756
2757 reject_var ("${xlib}_LDADD",
2758 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2759
2760
2761 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2762 NONLIBTOOL => 0, LIBTOOL => 1);
2763
2764 # Determine program to use for link.
2765 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2766
2767 my $rpathvar = "am_${xlib}_rpath";
2768 my $rpath = "\$($rpathvar)";
2769 foreach my $rcond ($instconds{$onelib}->conds)
2770 {
2771 my $val;
2772 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2773 || $instdirs{$onelib}{$rcond} eq 'noinst'
2774 || $instdirs{$onelib}{$rcond} eq 'check')
2775 {
2776 # It's an EXTRA_ library, so we can't specify -rpath,
2777 # because we don't know where the library will end up.
2778 # The user probably knows, but generally speaking automake
2779 # doesn't -- and in fact configure could decide
2780 # dynamically between two different locations.
2781 $val = '';
2782 }
2783 else
2784 {
2785 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2786 }
2787 if ($rcond->true)
2788 {
2789 # If $rcond is true there is only one condition and
2790 # there is no point defining an helper variable.
2791 $rpath = $val;
2792 }
2793 else
2794 {
2795 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2796 }
2797 }
2798
2799 # If the resulting library lies into a subdirectory,
2800 # make sure this directory will exist.
2801 my $dirstamp = require_build_directory_maybe ($onelib);
2802
2803 # Remember to cleanup .libs/ in this directory.
2804 my $dirname = dirname $onelib;
2805 $libtool_clean_directories{$dirname} = 1;
2806
2807 $output_rules .= &file_contents ('ltlibrary',
2808 $where,
2809 LTLIBRARY => $onelib,
2810 XLTLIBRARY => $xlib,
2811 RPATH => $rpath,
2812 XLINK => $xlink,
2813 DIRSTAMP => $dirstamp);
2814 if ($seen_libobjs)
2815 {
2816 if (var ($xlib . '_LIBADD'))
2817 {
2818 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2819 }
2820 }
2821 }
2822}
2823
2824# See if any _SOURCES variable were misspelled.
2825sub check_typos ()
2826{
2827 # It is ok if the user sets this particular variable.
2828 set_seen 'AM_LDFLAGS';
2829
2830 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2831 {
2832 foreach my $var (variables $primary)
2833 {
2834 my $varname = $var->name;
2835 # A configure variable is always legitimate.
2836 next if exists $configure_vars{$varname};
2837
2838 for my $cond ($var->conditions->conds)
2839 {
2840 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2841 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2842 . " program or\nlibrary has `$1' as canonic name"
2843 . " (possible typo)")
2844 unless $var->rdef ($cond)->seen;
2845 }
2846 }
2847 }
2848}
2849
2850
2851# Handle scripts.
2852sub handle_scripts
2853{
2854 # NOTE we no longer automatically clean SCRIPTS, because it is
2855 # useful to sometimes distribute scripts verbatim. This happens
2856 # e.g. in Automake itself.
2857 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2858 'bin', 'sbin', 'libexec', 'pkgdata',
2859 'noinst', 'check');
2860}
2861
2862
2863
2864
2865## ------------------------ ##
2866## Handling Texinfo files. ##
2867## ------------------------ ##
2868
2869# ($OUTFILE, $VFILE, @CLEAN_FILES)
2870# &scan_texinfo_file ($FILENAME)
2871# ------------------------------
2872# $OUTFILE - name of the info file produced by $FILENAME.
2873# $VFILE - name of the version.texi file used (undef if none).
2874# @CLEAN_FILES - list of byproducts (indexes etc.)
2875sub scan_texinfo_file ($)
2876{
2877 my ($filename) = @_;
2878
2879 # Some of the following extensions are always created, no matter
2880 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2881 # are only created when they are used. We used to scan $FILENAME
2882 # for their use, but that is not enough: they could be used in
2883 # included files. We can't scan included files because we don't
2884 # know the include path. Therefore we always erase these files, no
2885 # matter whether they are used or not.
2886 #
2887 # (tmp is only created if an @macro is used and a certain e-TeX
2888 # feature is not available.)
2889 my %clean_suffixes =
2890 map { $_ => 1 } (qw(aux log toc tmp
2891 cp cps
2892 fn fns
2893 ky kys
2894 vr vrs
2895 tp tps
2896 pg pgs)); # grep 'new.*index' texinfo.tex
2897
2898 my $texi = new Automake::XFile "< $filename";
2899 verb "reading $filename";
2900
2901 my ($outfile, $vfile);
2902 while ($_ = $texi->getline)
2903 {
2904 if (/^\@setfilename +(\S+)/)
2905 {
2906 # Honor only the first @setfilename. (It's possible to have
2907 # more occurrences later if the manual shows examples of how
2908 # to use @setfilename...)
2909 next if $outfile;
2910
2911 $outfile = $1;
2912 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2913 {
2914 error ("$filename:$.",
2915 "output `$outfile' has unrecognized extension");
2916 return;
2917 }
2918 }
2919 # A "version.texi" file is actually any file whose name matches
2920 # "vers*.texi".
2921 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2922 {
2923 $vfile = $1;
2924 }
2925
2926 # Try to find new or unused indexes.
2927
2928 # Creating a new category of index.
2929 elsif (/^\@def(code)?index (\w+)/)
2930 {
2931 $clean_suffixes{$2} = 1;
2932 $clean_suffixes{"$2s"} = 1;
2933 }
2934
2935 # Merging an index into an another.
2936 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2937 {
2938 delete $clean_suffixes{"$2s"};
2939 $clean_suffixes{"$3s"} = 1;
2940 }
2941
2942 }
2943
2944 if (! $outfile)
2945 {
2946 err_am "`$filename' missing \@setfilename";
2947 return;
2948 }
2949
2950 my $infobase = basename ($filename);
2951 $infobase =~ s/\.te?xi(nfo)?$//;
2952 return ($outfile, $vfile,
2953 map { "$infobase.$_" } (sort keys %clean_suffixes));
2954}
2955
2956
2957# ($DIRSTAMP, @CLEAN_FILES)
2958# output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2959# ------------------------------------------------------------------
2960# SOURCE - the source Texinfo file
2961# DEST - the destination Info file
2962# INSRC - wether DEST should be built in the source tree
2963# DEPENDENCIES - known dependencies
2964sub output_texinfo_build_rules ($$$@)
2965{
2966 my ($source, $dest, $insrc, @deps) = @_;
2967
2968 # Split `a.texi' into `a' and `.texi'.
2969 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2970 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2971
2972 $ssfx ||= "";
2973 $dsfx ||= "";
2974
2975 # We can output two kinds of rules: the "generic" rules use Make
2976 # suffix rules and are appropriate when $source and $dest do not lie
2977 # in a sub-directory; the "specific" rules are needed in the other
2978 # case.
2979 #
2980 # The former are output only once (this is not really apparent here,
2981 # but just remember that some logic deeper in Automake will not
2982 # output the same rule twice); while the later need to be output for
2983 # each Texinfo source.
2984 my $generic;
2985 my $makeinfoflags;
2986 my $sdir = dirname $source;
2987 if ($sdir eq '.' && dirname ($dest) eq '.')
2988 {
2989 $generic = 1;
2990 $makeinfoflags = '-I $(srcdir)';
2991 }
2992 else
2993 {
2994 $generic = 0;
2995 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2996 }
2997
2998 # A directory can contain two kinds of info files: some built in the
2999 # source tree, and some built in the build tree. The rules are
3000 # different in each case. However we cannot output two different
3001 # set of generic rules. Because in-source builds are more usual, we
3002 # use generic rules in this case and fall back to "specific" rules
3003 # for build-dir builds. (It should not be a problem to invert this
3004 # if needed.)
3005 $generic = 0 unless $insrc;
3006
3007 # We cannot use a suffix rule to build info files with an empty
3008 # extension. Otherwise we would output a single suffix inference
3009 # rule, with separate dependencies, as in
3010 #
3011 # .texi:
3012 # $(MAKEINFO) ...
3013 # foo.info: foo.texi
3014 #
3015 # which confuse Solaris make. (See the Autoconf manual for
3016 # details.) Therefore we use a specific rule in this case. This
3017 # applies to info files only (dvi and pdf files always have an
3018 # extension).
3019 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3020
3021 # If the resulting file lie into a subdirectory,
3022 # make sure this directory will exist.
3023 my $dirstamp = require_build_directory_maybe ($dest);
3024
3025 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3026
3027 $output_rules .= file_contents ('texibuild',
3028 new Automake::Location,
3029 DEPS => "@deps",
3030 DEST_PREFIX => $dpfx,
3031 DEST_INFO_PREFIX => $dipfx,
3032 DEST_SUFFIX => $dsfx,
3033 DIRSTAMP => $dirstamp,
3034 GENERIC => $generic,
3035 GENERIC_INFO => $generic_info,
3036 INSRC => $insrc,
3037 MAKEINFOFLAGS => $makeinfoflags,
3038 SOURCE => ($generic
3039 ? '$<' : $source),
3040 SOURCE_INFO => ($generic_info
3041 ? '$<' : $source),
3042 SOURCE_REAL => $source,
3043 SOURCE_SUFFIX => $ssfx,
3044 );
3045 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3046}
3047
3048
3049# $TEXICLEANS
3050# handle_texinfo_helper ($info_texinfos)
3051# --------------------------------------
3052# Handle all Texinfo source; helper for handle_texinfo.
3053sub handle_texinfo_helper ($)
3054{
3055 my ($info_texinfos) = @_;
3056 my (@infobase, @info_deps_list, @texi_deps);
3057 my %versions;
3058 my $done = 0;
3059 my @texi_cleans;
3060
3061 # Build a regex matching user-cleaned files.
3062 my $d = var 'DISTCLEANFILES';
3063 my $c = var 'CLEANFILES';
3064 my @f = ();
3065 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3066 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3067 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3068 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3069
3070 foreach my $texi
3071 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3072 {
3073 my $infobase = $texi;
3074 $infobase =~ s/\.(txi|texinfo|texi)$//;
3075
3076 if ($infobase eq $texi)
3077 {
3078 # FIXME: report line number.
3079 err_am "texinfo file `$texi' has unrecognized extension";
3080 next;
3081 }
3082
3083 push @infobase, $infobase;
3084
3085 # If 'version.texi' is referenced by input file, then include
3086 # automatic versioning capability.
3087 my ($out_file, $vtexi, @clean_files) =
3088 scan_texinfo_file ("$relative_dir/$texi")
3089 or next;
3090 push (@texi_cleans, @clean_files);
3091
3092 # If the Texinfo source is in a subdirectory, create the
3093 # resulting info in this subdirectory. If it is in the current
3094 # directory, try hard to not prefix "./" because it breaks the
3095 # generic rules.
3096 my $outdir = dirname ($texi) . '/';
3097 $outdir = "" if $outdir eq './';
3098 $out_file = $outdir . $out_file;
3099
3100 # Until Automake 1.6.3, .info files were built in the
3101 # source tree. This was an obstacle to the support of
3102 # non-distributed .info files, and non-distributed .texi
3103 # files.
3104 #
3105 # * Non-distributed .texi files is important in some packages
3106 # where .texi files are built at make time, probably using
3107 # other binaries built in the package itself, maybe using
3108 # tools or information found on the build host. Because
3109 # these files are not distributed they are always rebuilt
3110 # at make time; they should therefore not lie in the source
3111 # directory. One plan was to support this using
3112 # nodist_info_TEXINFOS or something similar. (Doing this
3113 # requires some sanity checks. For instance Automake should
3114 # not allow:
3115 # dist_info_TEXINFO = foo.texi
3116 # nodist_foo_TEXINFO = included.texi
3117 # because a distributed file should never depend on a
3118 # non-distributed file.)
3119 #
3120 # * If .texi files are not distributed, then .info files should
3121 # not be distributed either. There are also cases where one
3122 # want to distribute .texi files, but do not want to
3123 # distribute the .info files. For instance the Texinfo package
3124 # distributes the tool used to build these files; it would
3125 # be a waste of space to distribute them. It's not clear
3126 # which syntax we should use to indicate that .info files should
3127 # not be distributed. Akim Demaille suggested that eventually
3128 # we switch to a new syntax:
3129 # | Maybe we should take some inspiration from what's already
3130 # | done in the rest of Automake. Maybe there is too much
3131 # | syntactic sugar here, and you want
3132 # | nodist_INFO = bar.info
3133 # | dist_bar_info_SOURCES = bar.texi
3134 # | bar_texi_DEPENDENCIES = foo.texi
3135 # | with a bit of magic to have bar.info represent the whole
3136 # | bar*info set. That's a lot more verbose that the current
3137 # | situation, but it is # not new, hence the user has less
3138 # | to learn.
3139 # |
3140 # | But there is still too much room for meaningless specs:
3141 # | nodist_INFO = bar.info
3142 # | dist_bar_info_SOURCES = bar.texi
3143 # | dist_PS = bar.ps something-written-by-hand.ps
3144 # | nodist_bar_ps_SOURCES = bar.texi
3145 # | bar_texi_DEPENDENCIES = foo.texi
3146 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3147 #
3148 # Back to the point, it should be clear that in order to support
3149 # non-distributed .info files, we need to build them in the
3150 # build tree, not in the source tree (non-distributed .texi
3151 # files are less of a problem, because we do not output build
3152 # rules for them). In Automake 1.7 .info build rules have been
3153 # largely cleaned up so that .info files get always build in the
3154 # build tree, even when distributed. The idea was that
3155 # (1) if during a VPATH build the .info file was found to be
3156 # absent or out-of-date (in the source tree or in the
3157 # build tree), Make would rebuild it in the build tree.
3158 # If an up-to-date source-tree of the .info file existed,
3159 # make would not rebuild it in the build tree.
3160 # (2) having two copies of .info files, one in the source tree
3161 # and one (newer) in the build tree is not a problem
3162 # because `make dist' always pick files in the build tree
3163 # first.
3164 # However it turned out the be a bad idea for several reasons:
3165 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3166 # like GNU Make on point (1) above. These implementations
3167 # of Make would always rebuild .info files in the build
3168 # tree, even if such files were up to date in the source
3169 # tree. Consequently, it was impossible to perform a VPATH
3170 # build of a package containing Texinfo files using these
3171 # Make implementations.
3172 # (Refer to the Autoconf Manual, section "Limitation of
3173 # Make", paragraph "VPATH", item "target lookup", for
3174 # an account of the differences between these
3175 # implementations.)
3176 # * The GNU Coding Standards require these files to be built
3177 # in the source-tree (when they are distributed, that is).
3178 # * Keeping a fresher copy of distributed files in the
3179 # build tree can be annoying during development because
3180 # - if the files is kept under CVS, you really want it
3181 # to be updated in the source tree
3182 # - it is confusing that `make distclean' does not erase
3183 # all files in the build tree.
3184 #
3185 # Consequently, starting with Automake 1.8, .info files are
3186 # built in the source tree again. Because we still plan to
3187 # support non-distributed .info files at some point, we
3188 # have a single variable ($INSRC) that controls whether
3189 # the current .info file must be built in the source tree
3190 # or in the build tree. Actually this variable is switched
3191 # off for .info files that appear to be cleaned; this is
3192 # for backward compatibility with package such as Texinfo,
3193 # which do things like
3194 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3195 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3196 # # Do not create info files for distribution.
3197 # dist-info:
3198 # in order not to distribute .info files.
3199 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3200
3201 my $soutdir = '$(srcdir)/' . $outdir;
3202 $outdir = $soutdir if $insrc;
3203
3204 # If user specified file_TEXINFOS, then use that as explicit
3205 # dependency list.
3206 @texi_deps = ();
3207 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3208
3209 my $canonical = canonicalize ($infobase);
3210 if (var ($canonical . "_TEXINFOS"))
3211 {
3212 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3213 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3214 }
3215
3216 my ($dirstamp, @cfiles) =
3217 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3218 push (@texi_cleans, @cfiles);
3219
3220 push (@info_deps_list, $out_file);
3221
3222 # If a vers*.texi file is needed, emit the rule.
3223 if ($vtexi)
3224 {
3225 err_am ("`$vtexi', included in `$texi', "
3226 . "also included in `$versions{$vtexi}'")
3227 if defined $versions{$vtexi};
3228 $versions{$vtexi} = $texi;
3229
3230 # We number the stamp-vti files. This is doable since the
3231 # actual names don't matter much. We only number starting
3232 # with the second one, so that the common case looks nice.
3233 my $vti = ($done ? $done : 'vti');
3234 ++$done;
3235
3236 # This is ugly, but it is our historical practice.
3237 if ($config_aux_dir_set_in_configure_ac)
3238 {
3239 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3240 'mdate-sh');
3241 }
3242 else
3243 {
3244 require_file_with_macro (TRUE, 'info_TEXINFOS',
3245 FOREIGN, 'mdate-sh');
3246 }
3247
3248 my $conf_dir;
3249 if ($config_aux_dir_set_in_configure_ac)
3250 {
3251 $conf_dir = "$am_config_aux_dir/";
3252 }
3253 else
3254 {
3255 $conf_dir = '$(srcdir)/';
3256 }
3257 $output_rules .= file_contents ('texi-vers',
3258 new Automake::Location,
3259 TEXI => $texi,
3260 VTI => $vti,
3261 STAMPVTI => "${soutdir}stamp-$vti",
3262 VTEXI => "$soutdir$vtexi",
3263 MDDIR => $conf_dir,
3264 DIRSTAMP => $dirstamp);
3265 }
3266 }
3267
3268 # Handle location of texinfo.tex.
3269 my $need_texi_file = 0;
3270 my $texinfodir;
3271 if (var ('TEXINFO_TEX'))
3272 {
3273 # The user defined TEXINFO_TEX so assume he knows what he is
3274 # doing.
3275 $texinfodir = ('$(srcdir)/'
3276 . dirname (variable_value ('TEXINFO_TEX')));
3277 }
3278 elsif (option 'cygnus')
3279 {
3280 $texinfodir = '$(top_srcdir)/../texinfo';
3281 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3282 }
3283 elsif ($config_aux_dir_set_in_configure_ac)
3284 {
3285 $texinfodir = $am_config_aux_dir;
3286 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3287 $need_texi_file = 2; # so that we require_conf_file later
3288 }
3289 else
3290 {
3291 $texinfodir = '$(srcdir)';
3292 $need_texi_file = 1;
3293 }
3294 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3295
3296 push (@dist_targets, 'dist-info');
3297
3298 if (! option 'no-installinfo')
3299 {
3300 # Make sure documentation is made and installed first. Use
3301 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3302 # get run twice during "make all".
3303 unshift (@all, '$(INFO_DEPS)');
3304 }
3305
3306 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3307 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3308 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3309 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3310
3311 # This next isn't strictly needed now -- the places that look here
3312 # could easily be changed to look in info_TEXINFOS. But this is
3313 # probably better, in case noinst_TEXINFOS is ever supported.
3314 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3315
3316 # Do some error checking. Note that this file is not required
3317 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3318 # up above.
3319 if ($need_texi_file && ! option 'no-texinfo.tex')
3320 {
3321 if ($need_texi_file > 1)
3322 {
3323 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3324 'texinfo.tex');
3325 }
3326 else
3327 {
3328 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3329 'texinfo.tex');
3330 }
3331 }
3332
3333 return makefile_wrap ("", "\t ", @texi_cleans);
3334}
3335
3336
3337# handle_texinfo ()
3338# -----------------
3339# Handle all Texinfo source.
3340sub handle_texinfo ()
3341{
3342 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3343 # FIXME: I think this is an obsolete future feature name.
3344 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3345
3346 my $info_texinfos = var ('info_TEXINFOS');
3347 my $texiclean = "";
3348 if ($info_texinfos)
3349 {
3350 $texiclean = handle_texinfo_helper ($info_texinfos);
3351 }
3352 $output_rules .= file_contents ('texinfos',
3353 new Automake::Location,
3354 TEXICLEAN => $texiclean,
3355 'LOCAL-TEXIS' => !!$info_texinfos);
3356}
3357
3358
3359# Handle any man pages.
3360sub handle_man_pages
3361{
3362 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3363
3364 # Find all the sections in use. We do this by first looking for
3365 # "standard" sections, and then looking for any additional
3366 # sections used in man_MANS.
3367 my (%sections, %vlist);
3368 # We handle nodist_ for uniformity. man pages aren't distributed
3369 # by default so it isn't actually very important.
3370 foreach my $pfx ('', 'dist_', 'nodist_')
3371 {
3372 # Add more sections as needed.
3373 foreach my $section ('0'..'9', 'n', 'l')
3374 {
3375 my $varname = $pfx . 'man' . $section . '_MANS';
3376 if (var ($varname))
3377 {
3378 $sections{$section} = 1;
3379 $varname = '$(' . $varname . ')';
3380 $vlist{$varname} = 1;
3381
3382 &push_dist_common ($varname)
3383 if $pfx eq 'dist_';
3384 }
3385 }
3386
3387 my $varname = $pfx . 'man_MANS';
3388 my $var = var ($varname);
3389 if ($var)
3390 {
3391 foreach ($var->value_as_list_recursive)
3392 {
3393 # A page like `foo.1c' goes into man1dir.
3394 if (/\.([0-9a-z])([a-z]*)$/)
3395 {
3396 $sections{$1} = 1;
3397 }
3398 }
3399
3400 $varname = '$(' . $varname . ')';
3401 $vlist{$varname} = 1;
3402 &push_dist_common ($varname)
3403 if $pfx eq 'dist_';
3404 }
3405 }
3406
3407 return unless %sections;
3408
3409 # Now for each section, generate an install and uninstall rule.
3410 # Sort sections so output is deterministic.
3411 foreach my $section (sort keys %sections)
3412 {
3413 $output_rules .= &file_contents ('mans',
3414 new Automake::Location,
3415 SECTION => $section);
3416 }
3417
3418 my @mans = sort keys %vlist;
3419 $output_vars .= file_contents ('mans-vars',
3420 new Automake::Location,
3421 MANS => "@mans");
3422
3423 push (@all, '$(MANS)')
3424 unless option 'no-installman';
3425}
3426
3427# Handle DATA variables.
3428sub handle_data
3429{
3430 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3431 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3432 'sysconf', 'sharedstate', 'localstate',
3433 'pkgdata', 'lisp', 'noinst', 'check');
3434}
3435
3436# Handle TAGS.
3437sub handle_tags
3438{
3439 my @tag_deps = ();
3440 my @ctag_deps = ();
3441 if (var ('SUBDIRS'))
3442 {
3443 $output_rules .= ("tags-recursive:\n"
3444 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3445 # Never fail here if a subdir fails; it
3446 # isn't important.
3447 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3448 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3449 . "\tdone\n");
3450 push (@tag_deps, 'tags-recursive');
3451 &depend ('.PHONY', 'tags-recursive');
3452
3453 $output_rules .= ("ctags-recursive:\n"
3454 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3455 # Never fail here if a subdir fails; it
3456 # isn't important.
3457 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3458 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3459 . "\tdone\n");
3460 push (@ctag_deps, 'ctags-recursive');
3461 &depend ('.PHONY', 'ctags-recursive');
3462 }
3463
3464 if (&saw_sources_p (1)
3465 || var ('ETAGS_ARGS')
3466 || @tag_deps)
3467 {
3468 my @config;
3469 foreach my $spec (@config_headers)
3470 {
3471 my ($out, @ins) = split_config_file_spec ($spec);
3472 foreach my $in (@ins)
3473 {
3474 # If the config header source is in this directory,
3475 # require it.
3476 push @config, basename ($in)
3477 if $relative_dir eq dirname ($in);
3478 }
3479 }
3480 $output_rules .= &file_contents ('tags',
3481 new Automake::Location,
3482 CONFIG => "@config",
3483 TAGSDIRS => "@tag_deps",
3484 CTAGSDIRS => "@ctag_deps");
3485
3486 set_seen 'TAGS_DEPENDENCIES';
3487 }
3488 elsif (reject_var ('TAGS_DEPENDENCIES',
3489 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3490 . "without\nsources or `ETAGS_ARGS'"))
3491 {
3492 }
3493 else
3494 {
3495 # Every Makefile must define some sort of TAGS rule.
3496 # Otherwise, it would be possible for a top-level "make TAGS"
3497 # to fail because some subdirectory failed.
3498 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3499 # Ditto ctags.
3500 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3501 }
3502}
3503
3504# Handle multilib support.
3505sub handle_multilib
3506{
3507 if ($seen_multilib && $relative_dir eq '.')
3508 {
3509 $output_rules .= &file_contents ('multilib', new Automake::Location);
3510 push (@all, 'all-multi');
3511 }
3512}
3513
3514
3515# user_phony_rule ($NAME)
3516# -----------------------
3517# Return false if rule $NAME does not exist. Otherwise,
3518# declare it as phony, complete its definition (in case it is
3519# conditional), and return its Automake::Rule instance.
3520sub user_phony_rule ($)
3521{
3522 my ($name) = @_;
3523 my $rule = rule $name;
3524 if ($rule)
3525 {
3526 depend ('.PHONY', $name);
3527 # Define $NAME in all condition where it is not already defined,
3528 # so that it is always OK to depend on $NAME.
3529 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3530 {
3531 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3532 $c, INTERNAL);
3533 $output_rules .= $c->subst_string . "$name:\n";
3534 }
3535 }
3536 return $rule;
3537}
3538
3539
3540# $BOOLEAN
3541# &for_dist_common ($A, $B)
3542# -------------------------
3543# Subroutine for &handle_dist: sort files to dist.
3544#
3545# We put README first because it then becomes easier to make a
3546# Usenet-compliant shar file (in these, README must be first).
3547#
3548# FIXME: do more ordering of files here.
3549sub for_dist_common
3550{
3551 return 0
3552 if $a eq $b;
3553 return -1
3554 if $a eq 'README';
3555 return 1
3556 if $b eq 'README';
3557 return $a cmp $b;
3558}
3559
3560# handle_dist
3561# -----------
3562# Handle 'dist' target.
3563sub handle_dist ()
3564{
3565 # Substitutions for distdir.am
3566 my %transform;
3567
3568 # Define DIST_SUBDIRS. This must always be done, regardless of the
3569 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3570 my $subdirs = var ('SUBDIRS');
3571 if ($subdirs)
3572 {
3573 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3574 # to all possible directories, and use it. If DIST_SUBDIRS is
3575 # defined, just use it.
3576
3577 # Note that we check DIST_SUBDIRS first on purpose, so that
3578 # we don't call has_conditional_contents for now reason.
3579 # (In the past one project used so many conditional subdirectories
3580 # that calling has_conditional_contents on SUBDIRS caused
3581 # automake to grow to 150Mb -- this should not happen with
3582 # the current implementation of has_conditional_contents,
3583 # but it's more efficient to avoid the call anyway.)
3584 if (var ('DIST_SUBDIRS'))
3585 {
3586 }
3587 elsif ($subdirs->has_conditional_contents)
3588 {
3589 define_pretty_variable
3590 ('DIST_SUBDIRS', TRUE, INTERNAL,
3591 uniq ($subdirs->value_as_list_recursive));
3592 }
3593 else
3594 {
3595 # We always define this because that is what `distclean'
3596 # wants.
3597 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3598 '$(SUBDIRS)');
3599 }
3600 }
3601
3602 # The remaining definitions are only required when a dist target is used.
3603 return if option 'no-dist';
3604
3605 # At least one of the archive formats must be enabled.
3606 if ($relative_dir eq '.')
3607 {
3608 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3609 $archive_defined ||=
3610 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3611 error (option 'no-dist-gzip',
3612 "no-dist-gzip specified but no dist-* specified, "
3613 . "at least one archive format must be enabled")
3614 unless $archive_defined;
3615 }
3616
3617 # Look for common files that should be included in distribution.
3618 # If the aux dir is set, and it does not have a Makefile.am, then
3619 # we check for these files there as well.
3620 my $check_aux = 0;
3621 if ($relative_dir eq '.'
3622 && $config_aux_dir_set_in_configure_ac)
3623 {
3624 if (! &is_make_dir ($config_aux_dir))
3625 {
3626 $check_aux = 1;
3627 }
3628 }
3629 foreach my $cfile (@common_files)
3630 {
3631 if (dir_has_case_matching_file ($relative_dir, $cfile)
3632 # The file might be absent, but if it can be built it's ok.
3633 || rule $cfile)
3634 {
3635 &push_dist_common ($cfile);
3636 }
3637
3638 # Don't use `elsif' here because a file might meaningfully
3639 # appear in both directories.
3640 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3641 {
3642 &push_dist_common ("$config_aux_dir/$cfile")
3643 }
3644 }
3645
3646 # We might copy elements from $configure_dist_common to
3647 # %dist_common if we think we need to. If the file appears in our
3648 # directory, we would have discovered it already, so we don't
3649 # check that. But if the file is in a subdir without a Makefile,
3650 # we want to distribute it here if we are doing `.'. Ugly!
3651 if ($relative_dir eq '.')
3652 {
3653 foreach my $file (split (' ' , $configure_dist_common))
3654 {
3655 push_dist_common ($file)
3656 unless is_make_dir (dirname ($file));
3657 }
3658 }
3659
3660 # Files to distributed. Don't use ->value_as_list_recursive
3661 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3662 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3663 @dist_common = uniq (sort for_dist_common (@dist_common));
3664 variable_delete 'DIST_COMMON';
3665 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3666
3667 # Now that we've processed DIST_COMMON, disallow further attempts
3668 # to set it.
3669 $handle_dist_run = 1;
3670
3671 # Scan EXTRA_DIST to see if we need to distribute anything from a
3672 # subdir. If so, add it to the list. I didn't want to do this
3673 # originally, but there were so many requests that I finally
3674 # relented.
3675 my $extra_dist = var ('EXTRA_DIST');
3676
3677 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3678 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3679
3680 # If the target `dist-hook' exists, make sure it is run. This
3681 # allows users to do random weird things to the distribution
3682 # before it is packaged up.
3683 push (@dist_targets, 'dist-hook')
3684 if user_phony_rule 'dist-hook';
3685 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3686
3687 my $flm = option ('filename-length-max');
3688 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3689
3690 $output_rules .= &file_contents ('distdir',
3691 new Automake::Location,
3692 %transform,
3693 FILENAME_FILTER => $filename_filter);
3694}
3695
3696
3697# check_directory ($NAME, $WHERE)
3698# -------------------------------
3699# Ensure $NAME is a directory, and that it uses sane name.
3700# Use $WHERE as a location in the diagnostic, if any.
3701sub check_directory ($$)
3702{
3703 my ($dir, $where) = @_;
3704
3705 error $where, "required directory $relative_dir/$dir does not exist"
3706 unless -d "$relative_dir/$dir";
3707
3708 # If an `obj/' directory exists, BSD make will enter it before
3709 # reading `Makefile'. Hence the `Makefile' in the current directory
3710 # will not be read.
3711 #
3712 # % cat Makefile
3713 # all:
3714 # echo Hello
3715 # % cat obj/Makefile
3716 # all:
3717 # echo World
3718 # % make # GNU make
3719 # echo Hello
3720 # Hello
3721 # % pmake # BSD make
3722 # echo World
3723 # World
3724 msg ('portability', $where,
3725 "naming a subdirectory `obj' causes troubles with BSD make")
3726 if $dir eq 'obj';
3727
3728 # `aux' is probably the most important of the following forbidden name,
3729 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3730 msg ('portability', $where,
3731 "name `$dir' is reserved on W32 and DOS platforms")
3732 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3733}
3734
3735# check_directories_in_var ($VARIABLE)
3736# ------------------------------------
3737# Recursively check all items in variables $VARIABLE as directories
3738sub check_directories_in_var ($)
3739{
3740 my ($var) = @_;
3741 $var->traverse_recursively
3742 (sub
3743 {
3744 my ($var, $val, $cond, $full_cond) = @_;
3745 check_directory ($val, $var->rdef ($cond)->location);
3746 return ();
3747 },
3748 undef,
3749 skip_ac_subst => 1);
3750}
3751
3752# &handle_subdirs ()
3753# ------------------
3754# Handle subdirectories.
3755sub handle_subdirs ()
3756{
3757 my $subdirs = var ('SUBDIRS');
3758 return
3759 unless $subdirs;
3760
3761 check_directories_in_var $subdirs;
3762
3763 my $dsubdirs = var ('DIST_SUBDIRS');
3764 check_directories_in_var $dsubdirs
3765 if $dsubdirs;
3766
3767 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3768 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3769}
3770
3771
3772# ($REGEN, @DEPENDENCIES)
3773# &scan_aclocal_m4
3774# ----------------
3775# If aclocal.m4 creation is automated, return the list of its dependencies.
3776sub scan_aclocal_m4 ()
3777{
3778 my $regen_aclocal = 0;
3779
3780 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3781 set_seen 'CONFIGURE_DEPENDENCIES';
3782
3783 if (-f 'aclocal.m4')
3784 {
3785 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3786
3787 my $aclocal = new Automake::XFile "< aclocal.m4";
3788 my $line = $aclocal->getline;
3789 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3790 }
3791
3792 my @ac_deps = ();
3793
3794 if (set_seen ('ACLOCAL_M4_SOURCES'))
3795 {
3796 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3797 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3798 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3799 . "It should be safe to simply remove it.");
3800 }
3801
3802 # Note that it might be possible that aclocal.m4 doesn't exist but
3803 # should be auto-generated. This case probably isn't very
3804 # important.
3805
3806 return ($regen_aclocal, @ac_deps);
3807}
3808
3809
3810# Helper function for substitute_ac_subst_variables.
3811sub substitute_ac_subst_variables_worker($)
3812{
3813 my ($token) = @_;
3814 return "\@$token\@" if var $token;
3815 return "\${$token\}";
3816}
3817
3818# substitute_ac_subst_variables ($TEXT)
3819# -------------------------------------
3820# Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3821# variable.
3822sub substitute_ac_subst_variables ($)
3823{
3824 my ($text) = @_;
3825 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3826 return $text;
3827}
3828
3829# @DEPENDENCIES
3830# &prepend_srcdir (@INPUTS)
3831# -------------------------
3832# Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3833# if an input file has a directory part the same as the current
3834# directory, then the directory part is simply replaced by $(srcdir).
3835# But if the directory part is different, then $(top_srcdir) is
3836# prepended.
3837sub prepend_srcdir (@)
3838{
3839 my (@inputs) = @_;
3840 my @newinputs;
3841
3842 foreach my $single (@inputs)
3843 {
3844 if (dirname ($single) eq $relative_dir)
3845 {
3846 push (@newinputs, '$(srcdir)/' . basename ($single));
3847 }
3848 else
3849 {
3850 push (@newinputs, '$(top_srcdir)/' . $single);
3851 }
3852 }
3853 return @newinputs;
3854}
3855
3856# @DEPENDENCIES
3857# rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3858# ---------------------------------------------------
3859# Compute a list of dependencies appropriate for the rebuild
3860# rule of
3861# AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3862# Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3863sub rewrite_inputs_into_dependencies ($@)
3864{
3865 my ($file, @inputs) = @_;
3866 my @res = ();
3867
3868 for my $i (@inputs)
3869 {
3870 # We cannot create dependencies on shell variables.
3871 next if (substitute_ac_subst_variables $i) =~ /\$/;
3872
3873 if (exists $ac_config_files_location{$i})
3874 {
3875 my $di = dirname $i;
3876 if ($di eq $relative_dir)
3877 {
3878 $i = basename $i;
3879 }
3880 # In the top-level Makefile we do not use $(top_builddir), because
3881 # we are already there, and since the targets are built without
3882 # a $(top_builddir), it helps BSD Make to match them with
3883 # dependencies.
3884 elsif ($relative_dir ne '.')
3885 {
3886 $i = '$(top_builddir)/' . $i;
3887 }
3888 }
3889 else
3890 {
3891 msg ('error', $ac_config_files_location{$file},
3892 "required file `$i' not found")
3893 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3894 ($i) = prepend_srcdir ($i);
3895 push_dist_common ($i);
3896 }
3897 push @res, $i;
3898 }
3899 return @res;
3900}
3901
3902
3903
3904# &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3905# ------------------------------------------------------------------
3906# Handle remaking and configure stuff.
3907# We need the name of the input file, to do proper remaking rules.
3908sub handle_configure ($$$@)
3909{
3910 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3911
3912 prog_error 'empty @inputs'
3913 unless @inputs;
3914
3915 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3916 $makefile_in);
3917 my $rel_makefile = basename $makefile;
3918
3919 my $colon_infile = ':' . join (':', @inputs);
3920 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3921 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3922 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3923 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3924 @configure_deps, @aclocal_m4_deps,
3925 '$(top_srcdir)/' . $configure_ac);
3926 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3927 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3928 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3929 @configuredeps);
3930
3931 $output_rules .= file_contents
3932 ('configure',
3933 new Automake::Location,
3934 MAKEFILE => $rel_makefile,
3935 'MAKEFILE-DEPS' => "@rewritten",
3936 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3937 'MAKEFILE-IN' => $rel_makefile_in,
3938 'MAKEFILE-IN-DEPS' => "@include_stack",
3939 'MAKEFILE-AM' => $rel_makefile_am,
3940 STRICTNESS => global_option 'cygnus'
3941 ? 'cygnus' : $strictness_name,
3942 'USE-DEPS' => global_option 'no-dependencies'
3943 ? ' --ignore-deps' : '',
3944 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3945 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3946
3947 if ($relative_dir eq '.')
3948 {
3949 &push_dist_common ('acconfig.h')
3950 if -f 'acconfig.h';
3951 }
3952
3953 # If we have a configure header, require it.
3954 my $hdr_index = 0;
3955 my @distclean_config;
3956 foreach my $spec (@config_headers)
3957 {
3958 $hdr_index += 1;
3959 # $CONFIG_H_PATH: config.h from top level.
3960 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3961 my $config_h_dir = dirname ($config_h_path);
3962
3963 # If the header is in the current directory we want to build
3964 # the header here. Otherwise, if we're at the topmost
3965 # directory and the header's directory doesn't have a
3966 # Makefile, then we also want to build the header.
3967 if ($relative_dir eq $config_h_dir
3968 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3969 {
3970 my ($cn_sans_dir, $stamp_dir);
3971 if ($relative_dir eq $config_h_dir)
3972 {
3973 $cn_sans_dir = basename ($config_h_path);
3974 $stamp_dir = '';
3975 }
3976 else
3977 {
3978 $cn_sans_dir = $config_h_path;
3979 if ($config_h_dir eq '.')
3980 {
3981 $stamp_dir = '';
3982 }
3983 else
3984 {
3985 $stamp_dir = $config_h_dir . '/';
3986 }
3987 }
3988
3989 # This will also distribute all inputs.
3990 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3991
3992 # Cannot define rebuild rules for filenames with shell variables.
3993 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
3994
3995 # Header defined in this directory.
3996 my @files;
3997 if (-f $config_h_path . '.top')
3998 {
3999 push (@files, "$cn_sans_dir.top");
4000 }
4001 if (-f $config_h_path . '.bot')
4002 {
4003 push (@files, "$cn_sans_dir.bot");
4004 }
4005
4006 push_dist_common (@files);
4007
4008 # For now, acconfig.h can only appear in the top srcdir.
4009 if (-f 'acconfig.h')
4010 {
4011 push (@files, '$(top_srcdir)/acconfig.h');
4012 }
4013
4014 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4015 $output_rules .=
4016 file_contents ('remake-hdr',
4017 new Automake::Location,
4018 FILES => "@files",
4019 CONFIG_H => $cn_sans_dir,
4020 CONFIG_HIN => $ins[0],
4021 CONFIG_H_DEPS => "@ins",
4022 CONFIG_H_PATH => $config_h_path,
4023 STAMP => "$stamp");
4024
4025 push @distclean_config, $cn_sans_dir, $stamp;
4026 }
4027 }
4028
4029 $output_rules .= file_contents ('clean-hdr',
4030 new Automake::Location,
4031 FILES => "@distclean_config")
4032 if @distclean_config;
4033
4034 # Distribute and define mkinstalldirs only if it is already present
4035 # in the package, for backward compatibility (some people may still
4036 # use $(mkinstalldirs)).
4037 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4038 if (-f $mkidpath)
4039 {
4040 # Use require_file so that any existing script gets updated
4041 # by --force-missing.
4042 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4043 define_variable ('mkinstalldirs',
4044 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4045 }
4046 else
4047 {
4048 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4049 # at least one argument, and $(mkinstalldirs) used to work
4050 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4051 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4052 }
4053
4054 reject_var ('CONFIG_HEADER',
4055 "`CONFIG_HEADER' is an anachronism; now determined "
4056 . "automatically\nfrom `$configure_ac'");
4057
4058 my @config_h;
4059 foreach my $spec (@config_headers)
4060 {
4061 my ($out, @ins) = split_config_file_spec ($spec);
4062 # Generate CONFIG_HEADER define.
4063 if ($relative_dir eq dirname ($out))
4064 {
4065 push @config_h, basename ($out);
4066 }
4067 else
4068 {
4069 push @config_h, "\$(top_builddir)/$out";
4070 }
4071 }
4072 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4073 if @config_h;
4074
4075 # Now look for other files in this directory which must be remade
4076 # by config.status, and generate rules for them.
4077 my @actual_other_files = ();
4078 foreach my $lfile (@other_input_files)
4079 {
4080 my $file;
4081 my @inputs;
4082 if ($lfile =~ /^([^:]*):(.*)$/)
4083 {
4084 # This is the ":" syntax of AC_OUTPUT.
4085 $file = $1;
4086 @inputs = split (':', $2);
4087 }
4088 else
4089 {
4090 # Normal usage.
4091 $file = $lfile;
4092 @inputs = $file . '.in';
4093 }
4094
4095 # Automake files should not be stored in here, but in %MAKE_LIST.
4096 prog_error ("$lfile in \@other_input_files\n"
4097 . "\@other_input_files = (@other_input_files)")
4098 if -f $file . '.am';
4099
4100 my $local = basename ($file);
4101
4102 # We skip files that aren't in this directory. However, if
4103 # the file's directory does not have a Makefile, and we are
4104 # currently doing `.', then we create a rule to rebuild the
4105 # file in the subdir.
4106 my $fd = dirname ($file);
4107 if ($fd ne $relative_dir)
4108 {
4109 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4110 {
4111 $local = $file;
4112 }
4113 else
4114 {
4115 next;
4116 }
4117 }
4118
4119 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4120
4121 # Cannot output rules for shell variables.
4122 next if (substitute_ac_subst_variables $local) =~ /\$/;
4123
4124 $output_rules .= ($local . ': '
4125 . '$(top_builddir)/config.status '
4126 . "@rewritten_inputs\n"
4127 . "\t"
4128 . 'cd $(top_builddir) && '
4129 . '$(SHELL) ./config.status '
4130 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4131 . '$@'
4132 . "\n");
4133 push (@actual_other_files, $local);
4134 }
4135
4136 # For links we should clean destinations and distribute sources.
4137 foreach my $spec (@config_links)
4138 {
4139 my ($link, $file) = split /:/, $spec;
4140 # Some people do AC_CONFIG_LINKS($computed). We only handle
4141 # the DEST:SRC form.
4142 next unless $file;
4143 my $where = $ac_config_files_location{$link};
4144
4145 # Skip destinations that contain shell variables.
4146 if ((substitute_ac_subst_variables $link) !~ /\$/)
4147 {
4148 # We skip links that aren't in this directory. However, if
4149 # the link's directory does not have a Makefile, and we are
4150 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4151 # in `.'s Makefile.in.
4152 my $local = basename ($link);
4153 my $fd = dirname ($link);
4154 if ($fd ne $relative_dir)
4155 {
4156 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4157 {
4158 $local = $link;
4159 }
4160 else
4161 {
4162 $local = undef;
4163 }
4164 }
4165 push @actual_other_files, $local if $local;
4166 }
4167
4168 # Do not process sources that contain shell variables.
4169 if ((substitute_ac_subst_variables $file) !~ /\$/)
4170 {
4171 my $fd = dirname ($file);
4172
4173 # We distribute files that are in this directory.
4174 # At the top-level (`.') we also distribute files whose
4175 # directory does not have a Makefile.
4176 if (($fd eq $relative_dir)
4177 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4178 {
4179 # The following will distribute $file as a side-effect when
4180 # it is appropriate (i.e., when $file is not already an output).
4181 # We do not need the result, just the side-effect.
4182 rewrite_inputs_into_dependencies ($link, $file);
4183 }
4184 }
4185 }
4186
4187 # These files get removed by "make distclean".
4188 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4189 @actual_other_files);
4190}
4191
4192# Handle C headers.
4193sub handle_headers
4194{
4195 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4196 'oldinclude', 'pkginclude',
4197 'noinst', 'check');
4198 foreach (@r)
4199 {
4200 next unless $_->[1] =~ /\..*$/;
4201 &saw_extension ($&);
4202 }
4203}
4204
4205sub handle_gettext
4206{
4207 return if ! $seen_gettext || $relative_dir ne '.';
4208
4209 my $subdirs = var 'SUBDIRS';
4210
4211 if (! $subdirs)
4212 {
4213 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4214 return;
4215 }
4216
4217 # Perform some sanity checks to help users get the right setup.
4218 # We disable these tests when po/ doesn't exist in order not to disallow
4219 # unusual gettext setups.
4220 #
4221 # Bruno Haible:
4222 # | The idea is:
4223 # |
4224 # | 1) If a package doesn't have a directory po/ at top level, it
4225 # | will likely have multiple po/ directories in subpackages.
4226 # |
4227 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4228 # | is used without 'external'. It is also useful to warn for the
4229 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4230 # | warnings apply only to the usual layout of packages, therefore
4231 # | they should both be disabled if no po/ directory is found at
4232 # | top level.
4233
4234 if (-d 'po')
4235 {
4236 my @subdirs = $subdirs->value_as_list_recursive;
4237
4238 msg_var ('syntax', $subdirs,
4239 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4240 if ! grep ($_ eq 'po', @subdirs);
4241
4242 # intl/ is not required when AM_GNU_GETTEXT is called with the
4243 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4244 msg_var ('syntax', $subdirs,
4245 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4246 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4247 && ! grep ($_ eq 'intl', @subdirs));
4248
4249 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4250 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4251 msg_var ('syntax', $subdirs,
4252 "`intl' should not be in SUBDIRS when "
4253 . "AM_GNU_GETTEXT([external]) is used")
4254 if ($seen_gettext_external && ! $seen_gettext_intl
4255 && grep ($_ eq 'intl', @subdirs));
4256 }
4257
4258 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4259}
4260
4261# Handle footer elements.
4262sub handle_footer
4263{
4264 reject_rule ('.SUFFIXES',
4265 "use variable `SUFFIXES', not target `.SUFFIXES'");
4266
4267 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4268 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4269 # anything else, by sticking it right after the default: target.
4270 $output_header .= ".SUFFIXES:\n";
4271 my $suffixes = var 'SUFFIXES';
4272 my @suffixes = Automake::Rule::suffixes;
4273 if (@suffixes || $suffixes)
4274 {
4275 # Make sure SUFFIXES has unique elements. Sort them to ensure
4276 # the output remains consistent. However, $(SUFFIXES) is
4277 # always at the start of the list, unsorted. This is done
4278 # because make will choose rules depending on the ordering of
4279 # suffixes, and this lets the user have some control. Push
4280 # actual suffixes, and not $(SUFFIXES). Some versions of make
4281 # do not like variable substitutions on the .SUFFIXES line.
4282 my @user_suffixes = ($suffixes
4283 ? $suffixes->value_as_list_recursive : ());
4284
4285 my %suffixes = map { $_ => 1 } @suffixes;
4286 delete @suffixes{@user_suffixes};
4287
4288 $output_header .= (".SUFFIXES: "
4289 . join (' ', @user_suffixes, sort keys %suffixes)
4290 . "\n");
4291 }
4292
4293 $output_trailer .= file_contents ('footer', new Automake::Location);
4294}
4295
4296
4297# Generate `make install' rules.
4298sub handle_install ()
4299{
4300 $output_rules .= &file_contents
4301 ('install',
4302 new Automake::Location,
4303 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4304 ? (" \$(BUILT_SOURCES)\n"
4305 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4306 : ''),
4307 'installdirs-local' => (user_phony_rule 'installdirs-local'
4308 ? ' installdirs-local' : ''),
4309 am__installdirs => variable_value ('am__installdirs') || '');
4310}
4311
4312
4313# Deal with all and all-am.
4314sub handle_all ($)
4315{
4316 my ($makefile) = @_;
4317
4318 # Output `all-am'.
4319
4320 # Put this at the beginning for the sake of non-GNU makes. This
4321 # is still wrong if these makes can run parallel jobs. But it is
4322 # right enough.
4323 unshift (@all, basename ($makefile));
4324
4325 foreach my $spec (@config_headers)
4326 {
4327 my ($out, @ins) = split_config_file_spec ($spec);
4328 push (@all, basename ($out))
4329 if dirname ($out) eq $relative_dir;
4330 }
4331
4332 # Install `all' hooks.
4333 push (@all, "all-local")
4334 if user_phony_rule "all-local";
4335
4336 &pretty_print_rule ("all-am:", "\t\t", @all);
4337 &depend ('.PHONY', 'all-am', 'all');
4338
4339
4340 # Output `all'.
4341
4342 my @local_headers = ();
4343 push @local_headers, '$(BUILT_SOURCES)'
4344 if var ('BUILT_SOURCES');
4345 foreach my $spec (@config_headers)
4346 {
4347 my ($out, @ins) = split_config_file_spec ($spec);
4348 push @local_headers, basename ($out)
4349 if dirname ($out) eq $relative_dir;
4350 }
4351
4352 if (@local_headers)
4353 {
4354 # We need to make sure config.h is built before we recurse.
4355 # We also want to make sure that built sources are built
4356 # before any ordinary `all' targets are run. We can't do this
4357 # by changing the order of dependencies to the "all" because
4358 # that breaks when using parallel makes. Instead we handle
4359 # things explicitly.
4360 $output_all .= ("all: @local_headers"
4361 . "\n\t"
4362 . '$(MAKE) $(AM_MAKEFLAGS) '
4363 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4364 . "\n\n");
4365 }
4366 else
4367 {
4368 $output_all .= "all: " . (var ('SUBDIRS')
4369 ? 'all-recursive' : 'all-am') . "\n\n";
4370 }
4371}
4372
4373
4374# &do_check_merge_target ()
4375# -------------------------
4376# Handle check merge target specially.
4377sub do_check_merge_target ()
4378{
4379 # Include user-defined local form of target.
4380 push @check_tests, 'check-local'
4381 if user_phony_rule 'check-local';
4382
4383 # In --cygnus mode, check doesn't depend on all.
4384 if (option 'cygnus')
4385 {
4386 # Just run the local check rules.
4387 pretty_print_rule ('check-am:', "\t\t", @check);
4388 }
4389 else
4390 {
4391 # The check target must depend on the local equivalent of
4392 # `all', to ensure all the primary targets are built. Then it
4393 # must build the local check rules.
4394 $output_rules .= "check-am: all-am\n";
4395 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4396 @check)
4397 if @check;
4398 }
4399 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4400 @check_tests)
4401 if @check_tests;
4402
4403 depend '.PHONY', 'check', 'check-am';
4404 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4405 $output_rules .= ("check: "
4406 . (var ('BUILT_SOURCES')
4407 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4408 : '')
4409 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4410 . "\n");
4411}
4412
4413# handle_clean ($MAKEFILE)
4414# ------------------------
4415# Handle all 'clean' targets.
4416sub handle_clean ($)
4417{
4418 my ($makefile) = @_;
4419
4420 # Clean the files listed in user variables if they exist.
4421 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4422 if var ('MOSTLYCLEANFILES');
4423 $clean_files{'$(CLEANFILES)'} = CLEAN
4424 if var ('CLEANFILES');
4425 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4426 if var ('DISTCLEANFILES');
4427 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4428 if var ('MAINTAINERCLEANFILES');
4429
4430 # Built sources are automatically removed by maintainer-clean.
4431 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4432 if var ('BUILT_SOURCES');
4433
4434 # Compute a list of "rm"s to run for each target.
4435 my %rms = (MOSTLY_CLEAN, [],
4436 CLEAN, [],
4437 DIST_CLEAN, [],
4438 MAINTAINER_CLEAN, []);
4439
4440 foreach my $file (keys %clean_files)
4441 {
4442 my $when = $clean_files{$file};
4443 prog_error 'invalid entry in %clean_files'
4444 unless exists $rms{$when};
4445
4446 my $rm = "rm -f $file";
4447 # If file is a variable, make sure when don't call `rm -f' without args.
4448 $rm ="test -z \"$file\" || $rm"
4449 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4450
4451 push @{$rms{$when}}, "\t-$rm\n";
4452 }
4453
4454 $output_rules .= &file_contents
4455 ('clean',
4456 new Automake::Location,
4457 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4458 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4459 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4460 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4461 MAKEFILE => basename $makefile,
4462 );
4463}
4464
4465
4466# &target_cmp ($A, $B)
4467# --------------------
4468# Subroutine for &handle_factored_dependencies to let `.PHONY' and
4469# other `.TARGETS' be last.
4470sub target_cmp
4471{
4472 return 0 if $a eq $b;
4473
4474 my $a1 = substr ($a, 0, 1);
4475 my $b1 = substr ($b, 0, 1);
4476 if ($a1 ne $b1)
4477 {
4478 return -1 if $b1 eq '.';
4479 return 1 if $a1 eq '.';
4480 }
4481 return $a cmp $b;
4482}
4483
4484
4485# &handle_factored_dependencies ()
4486# --------------------------------
4487# Handle everything related to gathered targets.
4488sub handle_factored_dependencies
4489{
4490 # Reject bad hooks.
4491 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4492 'uninstall-exec-local', 'uninstall-exec-hook',
4493 'uninstall-dvi-local',
4494 'uninstall-html-local',
4495 'uninstall-info-local',
4496 'uninstall-pdf-local',
4497 'uninstall-ps-local')
4498 {
4499 my $x = $utarg;
4500 $x =~ s/-.*-/-/;
4501 reject_rule ($utarg, "use `$x', not `$utarg'");
4502 }
4503
4504 reject_rule ('install-local',
4505 "use `install-data-local' or `install-exec-local', "
4506 . "not `install-local'");
4507
4508 reject_rule ('install-hook',
4509 "use `install-data-hook' or `install-exec-hook', "
4510 . "not `install-hook'");
4511
4512 # Install the -local hooks.
4513 foreach (keys %dependencies)
4514 {
4515 # Hooks are installed on the -am targets.
4516 s/-am$// or next;
4517 depend ("$_-am", "$_-local")
4518 if user_phony_rule "$_-local";
4519 }
4520
4521 # Install the -hook hooks.
4522 # FIXME: Why not be as liberal as we are with -local hooks?
4523 foreach ('install-exec', 'install-data', 'uninstall')
4524 {
4525 if (user_phony_rule "$_-hook")
4526 {
4527 $actions{"$_-am"} .=
4528 ("\t\@\$(NORMAL_INSTALL)\n"
4529 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4530 depend ('.MAKE', "$_-am");
4531 }
4532 }
4533
4534 # All the required targets are phony.
4535 depend ('.PHONY', keys %required_targets);
4536
4537 # Actually output gathered targets.
4538 foreach (sort target_cmp keys %dependencies)
4539 {
4540 # If there is nothing about this guy, skip it.
4541 next
4542 unless (@{$dependencies{$_}}
4543 || $actions{$_}
4544 || $required_targets{$_});
4545
4546 # Define gathered targets in undefined conditions.
4547 # FIXME: Right now we must handle .PHONY as an exception,
4548 # because people write things like
4549 # .PHONY: myphonytarget
4550 # to append dependencies. This would not work if Automake
4551 # refrained from defining its own .PHONY target as it does
4552 # with other overridden targets.
4553 # Likewise for `.MAKE'.
4554 my @undefined_conds = (TRUE,);
4555 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4556 {
4557 @undefined_conds =
4558 Automake::Rule::define ($_, 'internal',
4559 RULE_AUTOMAKE, TRUE, INTERNAL);
4560 }
4561 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4562 foreach my $cond (@undefined_conds)
4563 {
4564 my $condstr = $cond->subst_string;
4565 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4566 $output_rules .= $actions{$_} if defined $actions{$_};
4567 $output_rules .= "\n";
4568 }
4569 }
4570}
4571
4572
4573# &handle_tests_dejagnu ()
4574# ------------------------
4575sub handle_tests_dejagnu
4576{
4577 push (@check_tests, 'check-DEJAGNU');
4578 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4579}
4580
4581
4582# Handle TESTS variable and other checks.
4583sub handle_tests
4584{
4585 if (option 'dejagnu')
4586 {
4587 &handle_tests_dejagnu;
4588 }
4589 else
4590 {
4591 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4592 {
4593 reject_var ($c, "`$c' defined but `dejagnu' not in "
4594 . "`AUTOMAKE_OPTIONS'");
4595 }
4596 }
4597
4598 if (var ('TESTS'))
4599 {
4600 push (@check_tests, 'check-TESTS');
4601 $output_rules .= &file_contents ('check', new Automake::Location);
4602
4603 # Tests that are known programs should have $(EXEEXT) appended.
4604 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4605 }
4606}
4607
4608# Handle Emacs Lisp.
4609sub handle_emacs_lisp
4610{
4611 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4612 'lisp', 'noinst');
4613
4614 return if ! @elfiles;
4615
4616 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4617 map { $_->[1] } @elfiles);
4618 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4619 '$(am__ELFILES:.el=.elc)');
4620 # This one can be overridden by users.
4621 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4622
4623 push @all, '$(ELCFILES)';
4624
4625 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4626 'EMACS', 'lispdir');
4627 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4628 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4629}
4630
4631# Handle Python
4632sub handle_python
4633{
4634 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4635 'noinst');
4636 return if ! @pyfiles;
4637
4638 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4639 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4640 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4641}
4642
4643# Handle Java.
4644sub handle_java
4645{
4646 my @sourcelist = &am_install_var ('-candist',
4647 'java', 'JAVA',
4648 'java', 'noinst', 'check');
4649 return if ! @sourcelist;
4650
4651 my @prefix = am_primary_prefixes ('JAVA', 1,
4652 'java', 'noinst', 'check');
4653
4654 my $dir;
4655 foreach my $curs (@prefix)
4656 {
4657 next
4658 if $curs eq 'EXTRA';
4659
4660 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4661 if defined $dir;
4662 $dir = $curs;
4663 }
4664
4665
4666 push (@all, 'class' . $dir . '.stamp');
4667}
4668
4669
4670# Handle some of the minor options.
4671sub handle_minor_options
4672{
4673 if (option 'readme-alpha')
4674 {
4675 if ($relative_dir eq '.')
4676 {
4677 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4678 {
4679 msg ('error-gnits', $package_version_location,
4680 "version `$package_version' doesn't follow " .
4681 "Gnits standards");
4682 }
4683 if (defined $1 && -f 'README-alpha')
4684 {
4685 # This means we have an alpha release. See
4686 # GNITS_VERSION_PATTERN for details.
4687 push_dist_common ('README-alpha');
4688 }
4689 }
4690 }
4691}
4692
4693################################################################
4694
4695# ($OUTPUT, @INPUTS)
4696# &split_config_file_spec ($SPEC)
4697# -------------------------------
4698# Decode the Autoconf syntax for config files (files, headers, links
4699# etc.).
4700sub split_config_file_spec ($)
4701{
4702 my ($spec) = @_;
4703 my ($output, @inputs) = split (/:/, $spec);
4704
4705 push @inputs, "$output.in"
4706 unless @inputs;
4707
4708 return ($output, @inputs);
4709}
4710
4711# $input
4712# locate_am (@POSSIBLE_SOURCES)
4713# -----------------------------
4714# AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4715# This functions returns the first *.in file for which a *.am exists.
4716# It returns undef otherwise.
4717sub locate_am (@)
4718{
4719 my (@rest) = @_;
4720 my $input;
4721 foreach my $file (@rest)
4722 {
4723 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4724 {
4725 $input = $file;
4726 last;
4727 }
4728 }
4729 return $input;
4730}
4731
4732my %make_list;
4733
4734# &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4735# ---------------------------------------------------
4736# Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4737# (or AC_OUTPUT).
4738sub scan_autoconf_config_files ($$)
4739{
4740 my ($where, $config_files) = @_;
4741
4742 # Look at potential Makefile.am's.
4743 foreach (split ' ', $config_files)
4744 {
4745 # Must skip empty string for Perl 4.
4746 next if $_ eq "\\" || $_ eq '';
4747
4748 # Handle $local:$input syntax.
4749 my ($local, @rest) = split (/:/);
4750 @rest = ("$local.in",) unless @rest;
4751 my $input = locate_am @rest;
4752 if ($input)
4753 {
4754 # We have a file that automake should generate.
4755 $make_list{$input} = join (':', ($local, @rest));
4756 }
4757 else
4758 {
4759 # We have a file that automake should cause to be
4760 # rebuilt, but shouldn't generate itself.
4761 push (@other_input_files, $_);
4762 }
4763 $ac_config_files_location{$local} = $where;
4764 }
4765}
4766
4767
4768# &scan_autoconf_traces ($FILENAME)
4769# ---------------------------------
4770sub scan_autoconf_traces ($)
4771{
4772 my ($filename) = @_;
4773
4774 # Macros to trace, with their minimal number of arguments.
4775 #
4776 # IMPORTANT: If you add a macro here, you should also add this macro
4777 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4778 my %traced = (
4779 AC_CANONICAL_BUILD => 0,
4780 AC_CANONICAL_HOST => 0,
4781 AC_CANONICAL_TARGET => 0,
4782 AC_CONFIG_AUX_DIR => 1,
4783 AC_CONFIG_FILES => 1,
4784 AC_CONFIG_HEADERS => 1,
4785 AC_CONFIG_LIBOBJ_DIR => 1,
4786 AC_CONFIG_LINKS => 1,
4787 AC_INIT => 0,
4788 AC_LIBSOURCE => 1,
4789 AC_REQUIRE_AUX_FILE => 1,
4790 AC_SUBST_TRACE => 1,
4791 AM_AUTOMAKE_VERSION => 1,
4792 AM_CONDITIONAL => 2,
4793 AM_ENABLE_MULTILIB => 0,
4794 AM_GNU_GETTEXT => 0,
4795 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4796 AM_INIT_AUTOMAKE => 0,
4797 AM_MAINTAINER_MODE => 0,
4798 AM_PROG_CC_C_O => 0,
4799 _AM_SUBST_NOTMAKE => 1,
4800 LT_SUPPORTED_TAG => 1,
4801 _LT_AC_TAGCONFIG => 0,
4802 m4_include => 1,
4803 m4_sinclude => 1,
4804 sinclude => 1,
4805 );
4806
4807 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4808
4809 # Use a separator unlikely to be used, not `:', the default, which
4810 # has a precise meaning for AC_CONFIG_FILES and so on.
4811 $traces .= join (' ',
4812 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4813 (keys %traced));
4814
4815 my $tracefh = new Automake::XFile ("$traces $filename |");
4816 verb "reading $traces";
4817
4818 while ($_ = $tracefh->getline)
4819 {
4820 chomp;
4821 my ($here, @args) = split (/::/);
4822 my $where = new Automake::Location $here;
4823 my $macro = $args[0];
4824
4825 prog_error ("unrequested trace `$macro'")
4826 unless exists $traced{$macro};
4827
4828 # Skip and diagnose malformed calls.
4829 if ($#args < $traced{$macro})
4830 {
4831 msg ('syntax', $where, "not enough arguments for $macro");
4832 next;
4833 }
4834
4835 # Alphabetical ordering please.
4836 if ($macro eq 'AC_CANONICAL_BUILD')
4837 {
4838 if ($seen_canonical <= AC_CANONICAL_BUILD)
4839 {
4840 $seen_canonical = AC_CANONICAL_BUILD;
4841 $canonical_location = $where;
4842 }
4843 }
4844 elsif ($macro eq 'AC_CANONICAL_HOST')
4845 {
4846 if ($seen_canonical <= AC_CANONICAL_HOST)
4847 {
4848 $seen_canonical = AC_CANONICAL_HOST;
4849 $canonical_location = $where;
4850 }
4851 }
4852 elsif ($macro eq 'AC_CANONICAL_TARGET')
4853 {
4854 $seen_canonical = AC_CANONICAL_TARGET;
4855 $canonical_location = $where;
4856 }
4857 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4858 {
4859 if ($seen_init_automake)
4860 {
4861 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4862 . "AM_INIT_AUTOMAKE...", partial => 1);
4863 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4864 }
4865 $config_aux_dir = $args[1];
4866 $config_aux_dir_set_in_configure_ac = 1;
4867 $relative_dir = '.';
4868 check_directory ($config_aux_dir, $where);
4869 }
4870 elsif ($macro eq 'AC_CONFIG_FILES')
4871 {
4872 # Look at potential Makefile.am's.
4873 scan_autoconf_config_files ($where, $args[1]);
4874 }
4875 elsif ($macro eq 'AC_CONFIG_HEADERS')
4876 {
4877 foreach my $spec (split (' ', $args[1]))
4878 {
4879 my ($dest, @src) = split (':', $spec);
4880 $ac_config_files_location{$dest} = $where;
4881 push @config_headers, $spec;
4882 }
4883 }
4884 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4885 {
4886 $config_libobj_dir = $args[1];
4887 $relative_dir = '.';
4888 check_directory ($config_libobj_dir, $where);
4889 }
4890 elsif ($macro eq 'AC_CONFIG_LINKS')
4891 {
4892 foreach my $spec (split (' ', $args[1]))
4893 {
4894 my ($dest, $src) = split (':', $spec);
4895 $ac_config_files_location{$dest} = $where;
4896 push @config_links, $spec;
4897 }
4898 }
4899 elsif ($macro eq 'AC_INIT')
4900 {
4901 if (defined $args[2])
4902 {
4903 $package_version = $args[2];
4904 $package_version_location = $where;
4905 }
4906 }
4907 elsif ($macro eq 'AC_LIBSOURCE')
4908 {
4909 $libsources{$args[1]} = $here;
4910 }
4911 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4912 {
4913 # Only remember the first time a file is required.
4914 $required_aux_file{$args[1]} = $where
4915 unless exists $required_aux_file{$args[1]};
4916 }
4917 elsif ($macro eq 'AC_SUBST_TRACE')
4918 {
4919 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
4920 # AC_SUBST(5), then too bad.
4921 $configure_vars{$args[1]} = $where
4922 if $args[1] =~ /^\w+$/;
4923 }
4924 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4925 {
4926 error ($where,
4927 "version mismatch. This is Automake $VERSION,\n" .
4928 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4929 "comes from Automake $args[1]. You should recreate\n" .
4930 "aclocal.m4 with aclocal and run automake again.\n",
4931 # $? = 63 is used to indicate version mismatch to missing.
4932 exit_code => 63)
4933 if $VERSION ne $args[1];
4934
4935 $seen_automake_version = 1;
4936 }
4937 elsif ($macro eq 'AM_CONDITIONAL')
4938 {
4939 $configure_cond{$args[1]} = $where;
4940 }
4941 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4942 {
4943 $seen_multilib = $where;
4944 }
4945 elsif ($macro eq 'AM_GNU_GETTEXT')
4946 {
4947 $seen_gettext = $where;
4948 $ac_gettext_location = $where;
4949 $seen_gettext_external = grep ($_ eq 'external', @args);
4950 }
4951 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
4952 {
4953 $seen_gettext_intl = $where;
4954 }
4955 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4956 {
4957 $seen_init_automake = $where;
4958 if (defined $args[2])
4959 {
4960 $package_version = $args[2];
4961 $package_version_location = $where;
4962 }
4963 elsif (defined $args[1])
4964 {
4965 exit $exit_code
4966 if (process_global_option_list ($where,
4967 split (' ', $args[1])));
4968 }
4969 }
4970 elsif ($macro eq 'AM_MAINTAINER_MODE')
4971 {
4972 $seen_maint_mode = $where;
4973 }
4974 elsif ($macro eq 'AM_PROG_CC_C_O')
4975 {
4976 $seen_cc_c_o = $where;
4977 }
4978 elsif ($macro eq '_AM_SUBST_NOTMAKE')
4979 {
4980 $ignored_configure_vars{$args[1]} = $where;
4981 }
4982 elsif ($macro eq 'm4_include'
4983 || $macro eq 'm4_sinclude'
4984 || $macro eq 'sinclude')
4985 {
4986 # Skip missing `sinclude'd files.
4987 next if $macro ne 'm4_include' && ! -f $args[1];
4988
4989 # Some modified versions of Autoconf don't use
4990 # frozen files. Consequently it's possible that we see all
4991 # m4_include's performed during Autoconf's startup.
4992 # Obviously we don't want to distribute Autoconf's files
4993 # so we skip absolute filenames here.
4994 push @configure_deps, '$(top_srcdir)/' . $args[1]
4995 unless $here =~ m,^(?:\w:)?[\\/],;
4996 # Keep track of the greatest timestamp.
4997 if (-e $args[1])
4998 {
4999 my $mtime = mtime $args[1];
5000 $configure_deps_greatest_timestamp = $mtime
5001 if $mtime > $configure_deps_greatest_timestamp;
5002 }
5003 }
5004 elsif ($macro eq 'LT_SUPPORTED_TAG')
5005 {
5006 $libtool_tags{$args[1]} = 1;
5007 $libtool_new_api = 1;
5008 }
5009 elsif ($macro eq '_LT_AC_TAGCONFIG')
5010 {
5011 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5012 # We use it to detect whether tags are supported. Our
5013 # preferred interface is LT_SUPPORTED_TAG, but it was
5014 # introduced in Libtool 1.6.
5015 if (0 == keys %libtool_tags)
5016 {
5017 # Hardcode the tags supported by Libtool 1.5.
5018 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5019 }
5020 }
5021 }
5022
5023 $tracefh->close;
5024}
5025
5026
5027# &scan_autoconf_files ()
5028# -----------------------
5029# Check whether we use `configure.ac' or `configure.in'.
5030# Scan it (and possibly `aclocal.m4') for interesting things.
5031# We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5032sub scan_autoconf_files ()
5033{
5034 # Reinitialize libsources here. This isn't really necessary,
5035 # since we currently assume there is only one configure.ac. But
5036 # that won't always be the case.
5037 %libsources = ();
5038
5039 # Keep track of the youngest configure dependency.
5040 $configure_deps_greatest_timestamp = mtime $configure_ac;
5041 if (-e 'aclocal.m4')
5042 {
5043 my $mtime = mtime 'aclocal.m4';
5044 $configure_deps_greatest_timestamp = $mtime
5045 if $mtime > $configure_deps_greatest_timestamp;
5046 }
5047
5048 scan_autoconf_traces ($configure_ac);
5049
5050 @configure_input_files = sort keys %make_list;
5051 # Set input and output files if not specified by user.
5052 if (! @input_files)
5053 {
5054 @input_files = @configure_input_files;
5055 %output_files = %make_list;
5056 }
5057
5058
5059 if (! $seen_init_automake)
5060 {
5061 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5062 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5063 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5064 . "and that aclocal.m4 was recently regenerated "
5065 . "(using aclocal).");
5066 }
5067 else
5068 {
5069 if (! $seen_automake_version)
5070 {
5071 if (-f 'aclocal.m4')
5072 {
5073 error ($seen_init_automake,
5074 "your implementation of AM_INIT_AUTOMAKE comes from " .
5075 "an\nold Automake version. You should recreate " .
5076 "aclocal.m4\nwith aclocal and run automake again.\n",
5077 # $? = 63 is used to indicate version mismatch to missing.
5078 exit_code => 63);
5079 }
5080 else
5081 {
5082 error ($seen_init_automake,
5083 "no proper implementation of AM_INIT_AUTOMAKE was " .
5084 "found,\nprobably because aclocal.m4 is missing...\n" .
5085 "You should run aclocal to create this file, then\n" .
5086 "run automake again.\n");
5087 }
5088 }
5089 }
5090
5091 locate_aux_dir ();
5092
5093 # Reorder @input_files so that the Makefile that distributes aux
5094 # files is processed last. This is important because each directory
5095 # can require auxiliary scripts and we should wait until they have
5096 # been installed before distributing them.
5097
5098 # The Makefile.in that distribute the aux files is the one in
5099 # $config_aux_dir or the top-level Makefile.
5100 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5101 my @new_input_files = ();
5102 while (@input_files)
5103 {
5104 my $in = pop @input_files;
5105 my @ins = split (/:/, $output_files{$in});
5106 if (dirname ($ins[0]) eq $auxdirdist)
5107 {
5108 push @new_input_files, $in;
5109 $automake_will_process_aux_dir = 1;
5110 }
5111 else
5112 {
5113 unshift @new_input_files, $in;
5114 }
5115 }
5116 @input_files = @new_input_files;
5117
5118 # If neither the auxdir/Makefile nor the ./Makefile are generated
5119 # by Automake, we won't distribute the aux files anyway. Assume
5120 # the user know what (s)he does, and pretend we will distribute
5121 # them to disable the error in require_file_internal.
5122 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5123
5124 # Look for some files we need. Always check for these. This
5125 # check must be done for every run, even those where we are only
5126 # looking at a subdir Makefile. We must set relative_dir for
5127 # maybe_push_required_file to work.
5128 $relative_dir = '.';
5129 foreach my $file (keys %required_aux_file)
5130 {
5131 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5132 }
5133 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5134 if -f $config_aux_dir . '/install.sh';
5135
5136 # Preserve dist_common for later.
5137 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5138
5139}
5140
5141################################################################
5142
5143# Set up for Cygnus mode.
5144sub check_cygnus
5145{
5146 my $cygnus = option 'cygnus';
5147 return unless $cygnus;
5148
5149 set_strictness ('foreign');
5150 set_option ('no-installinfo', $cygnus);
5151 set_option ('no-dependencies', $cygnus);
5152 set_option ('no-dist', $cygnus);
5153
5154 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5155 if !$seen_maint_mode;
5156}
5157
5158# Do any extra checking for GNU standards.
5159sub check_gnu_standards
5160{
5161 if ($relative_dir eq '.')
5162 {
5163 # In top level (or only) directory.
5164 require_file ("$am_file.am", GNU,
5165 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5166
5167 # Accept one of these three licenses; default to COPYING.
5168 # Make sure we do not overwrite an existing license.
5169 my $license;
5170 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5171 {
5172 if (-f $_)
5173 {
5174 $license = $_;
5175 last;
5176 }
5177 }
5178 require_file ("$am_file.am", GNU, 'COPYING')
5179 unless $license;
5180 }
5181
5182 for my $opt ('no-installman', 'no-installinfo')
5183 {
5184 msg ('error-gnu', option $opt,
5185 "option `$opt' disallowed by GNU standards")
5186 if option $opt;
5187 }
5188}
5189
5190# Do any extra checking for GNITS standards.
5191sub check_gnits_standards
5192{
5193 if ($relative_dir eq '.')
5194 {
5195 # In top level (or only) directory.
5196 require_file ("$am_file.am", GNITS, 'THANKS');
5197 }
5198}
5199
5200################################################################
5201#
5202# Functions to handle files of each language.
5203
5204# Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5205# simple formula: Return value is LANG_SUBDIR if the resulting object
5206# file should be in a subdir if the source file is, LANG_PROCESS if
5207# file is to be dealt with, LANG_IGNORE otherwise.
5208
5209# Much of the actual processing is handled in
5210# handle_single_transform. These functions exist so that
5211# auxiliary information can be recorded for a later cleanup pass.
5212# Note that the calls to these functions are computed, so don't bother
5213# searching for their precise names in the source.
5214
5215# This is just a convenience function that can be used to determine
5216# when a subdir object should be used.
5217sub lang_sub_obj
5218{
5219 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5220}
5221
5222# Rewrite a single C source file.
5223sub lang_c_rewrite
5224{
5225 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5226
5227 if (option 'ansi2knr' && $base =~ /_$/)
5228 {
5229 # FIXME: include line number in error.
5230 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5231 }
5232
5233 my $r = LANG_PROCESS;
5234 if (option 'subdir-objects')
5235 {
5236 $r = LANG_SUBDIR;
5237 if ($directory && $directory ne '.')
5238 {
5239 $base = $directory . '/' . $base;
5240
5241 # libtool is always able to put the object at the proper place,
5242 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5243 msg_var ('portability', $var,
5244 "compiling `$base.c' in subdir requires "
5245 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5246 uniq_scope => US_GLOBAL,
5247 uniq_part => 'AM_PROG_CC_C_O subdir')
5248 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5249 }
5250
5251 # In this case we already have the directory information, so
5252 # don't add it again.
5253 $de_ansi_files{$base} = '';
5254 }
5255 else
5256 {
5257 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5258 ? ''
5259 : "$directory/");
5260 }
5261
5262 if (! $seen_cc_c_o
5263 && $have_per_exec_flags
5264 && ! option 'subdir-objects'
5265 && $nonansi_obj ne '.lo')
5266 {
5267 msg_var ('portability',
5268 $var, "compiling `$base.c' with per-target flags requires "
5269 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5270 uniq_scope => US_GLOBAL,
5271 uniq_part => 'AM_PROG_CC_C_O per-target')
5272 }
5273
5274 return $r;
5275}
5276
5277# Rewrite a single C++ source file.
5278sub lang_cxx_rewrite
5279{
5280 return &lang_sub_obj;
5281}
5282
5283# Rewrite a single header file.
5284sub lang_header_rewrite
5285{
5286 # Header files are simply ignored.
5287 return LANG_IGNORE;
5288}
5289
5290# Rewrite a single yacc file.
5291sub lang_yacc_rewrite
5292{
5293 my ($directory, $base, $ext) = @_;
5294
5295 my $r = &lang_sub_obj;
5296 (my $newext = $ext) =~ tr/y/c/;
5297 return ($r, $newext);
5298}
5299
5300# Rewrite a single yacc++ file.
5301sub lang_yaccxx_rewrite
5302{
5303 my ($directory, $base, $ext) = @_;
5304
5305 my $r = &lang_sub_obj;
5306 (my $newext = $ext) =~ tr/y/c/;
5307 return ($r, $newext);
5308}
5309
5310# Rewrite a single lex file.
5311sub lang_lex_rewrite
5312{
5313 my ($directory, $base, $ext) = @_;
5314
5315 my $r = &lang_sub_obj;
5316 (my $newext = $ext) =~ tr/l/c/;
5317 return ($r, $newext);
5318}
5319
5320# Rewrite a single lex++ file.
5321sub lang_lexxx_rewrite
5322{
5323 my ($directory, $base, $ext) = @_;
5324
5325 my $r = &lang_sub_obj;
5326 (my $newext = $ext) =~ tr/l/c/;
5327 return ($r, $newext);
5328}
5329
5330# Rewrite a single assembly file.
5331sub lang_asm_rewrite
5332{
5333 return &lang_sub_obj;
5334}
5335
5336# Rewrite a single preprocessed assembly file.
5337sub lang_cppasm_rewrite
5338{
5339 return &lang_sub_obj;
5340}
5341
5342# Rewrite a single Fortran 77 file.
5343sub lang_f77_rewrite
5344{
5345 return LANG_PROCESS;
5346}
5347
5348# Rewrite a single Fortran file.
5349sub lang_fc_rewrite
5350{
5351 return LANG_PROCESS;
5352}
5353
5354# Rewrite a single preprocessed Fortran file.
5355sub lang_ppfc_rewrite
5356{
5357 return LANG_PROCESS;
5358}
5359
5360# Rewrite a single preprocessed Fortran 77 file.
5361sub lang_ppf77_rewrite
5362{
5363 return LANG_PROCESS;
5364}
5365
5366# Rewrite a single ratfor file.
5367sub lang_ratfor_rewrite
5368{
5369 return LANG_PROCESS;
5370}
5371
5372# Rewrite a single Objective C file.
5373sub lang_objc_rewrite
5374{
5375 return &lang_sub_obj;
5376}
5377
5378# Rewrite a single Unified Parallel C file.
5379sub lang_upc_rewrite
5380{
5381 return &lang_sub_obj;
5382}
5383
5384# Rewrite a single Java file.
5385sub lang_java_rewrite
5386{
5387 return LANG_SUBDIR;
5388}
5389
5390# The lang_X_finish functions are called after all source file
5391# processing is done. Each should handle defining rules for the
5392# language, etc. A finish function is only called if a source file of
5393# the appropriate type has been seen.
5394
5395sub lang_c_finish
5396{
5397 # Push all libobjs files onto de_ansi_files. We actually only
5398 # push files which exist in the current directory, and which are
5399 # genuine source files.
5400 foreach my $file (keys %libsources)
5401 {
5402 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5403 {
5404 $de_ansi_files{$1} = ''
5405 }
5406 }
5407
5408 if (option 'ansi2knr' && keys %de_ansi_files)
5409 {
5410 # Make all _.c files depend on their corresponding .c files.
5411 my @objects;
5412 foreach my $base (sort keys %de_ansi_files)
5413 {
5414 # Each _.c file must depend on ansi2knr; otherwise it
5415 # might be used in a parallel build before it is built.
5416 # We need to support files in the srcdir and in the build
5417 # dir (because these files might be auto-generated. But
5418 # we can't use $< -- some makes only define $< during a
5419 # suffix rule.
5420 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5421 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5422 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5423 . '`if test -f $(srcdir)/' . $ansfile
5424 . '; then echo $(srcdir)/' . $ansfile
5425 . '; else echo ' . $ansfile . '; fi` '
5426 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5427 . '| $(ANSI2KNR) > $@'
5428 # If ansi2knr fails then we shouldn't
5429 # create the _.c file
5430 . " || rm -f \$\@\n");
5431 push (@objects, $base . '_.$(OBJEXT)');
5432 push (@objects, $base . '_.lo')
5433 if var ('LIBTOOL');
5434
5435 # Explicitly clean the _.c files if they are in a
5436 # subdirectory. (In the current directory they get erased
5437 # by a `rm -f *_.c' rule.)
5438 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5439 if dirname ($base) ne '.';
5440 }
5441
5442 # Make all _.o (and _.lo) files depend on ansi2knr.
5443 # Use a sneaky little hack to make it print nicely.
5444 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5445 }
5446}
5447
5448# This is a yacc helper which is called whenever we have decided to
5449# compile a yacc file.
5450sub lang_yacc_target_hook
5451{
5452 my ($self, $aggregate, $output, $input, %transform) = @_;
5453
5454 my $flag = $aggregate . "_YFLAGS";
5455 my $flagvar = var $flag;
5456 my $YFLAGSvar = var 'YFLAGS';
5457 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5458 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5459 {
5460 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5461 my $header = $output_base . '.h';
5462
5463 # Found a `-d' that applies to the compilation of this file.
5464 # Add a dependency for the generated header file, and arrange
5465 # for that file to be included in the distribution.
5466 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5467 RULE_AUTOMAKE, TRUE,
5468 INTERNAL))
5469 {
5470 my $condstr = $cond->subst_string;
5471 $output_rules .=
5472 "$condstr${header}: $output\n"
5473 # Recover from removal of $header
5474 . "$condstr\t\@if test ! -f \$@; then \\\n"
5475 . "$condstr\t rm -f $output; \\\n"
5476 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5477 . "$condstr\telse :; fi\n";
5478 }
5479 # Distribute the generated file, unless its .y source was
5480 # listed in a nodist_ variable. (&handle_source_transform
5481 # will set DIST_SOURCE.)
5482 &push_dist_common ($header)
5483 if $transform{'DIST_SOURCE'};
5484
5485 # If the files are built in the build directory, then we want
5486 # to remove them with `make clean'. If they are in srcdir
5487 # they shouldn't be touched. However, we can't determine this
5488 # statically, and the GNU rules say that yacc/lex output files
5489 # should be removed by maintainer-clean. So that's what we
5490 # do.
5491 $clean_files{$header} = MAINTAINER_CLEAN;
5492 }
5493 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5494 # See the comment above for $HEADER.
5495 $clean_files{$output} = MAINTAINER_CLEAN;
5496}
5497
5498# This is a lex helper which is called whenever we have decided to
5499# compile a lex file.
5500sub lang_lex_target_hook
5501{
5502 my ($self, $aggregate, $output, $input) = @_;
5503 # If the files are built in the build directory, then we want to
5504 # remove them with `make clean'. If they are in srcdir they
5505 # shouldn't be touched. However, we can't determine this
5506 # statically, and the GNU rules say that yacc/lex output files
5507 # should be removed by maintainer-clean. So that's what we do.
5508 $clean_files{$output} = MAINTAINER_CLEAN;
5509}
5510
5511# This is a helper for both lex and yacc.
5512sub yacc_lex_finish_helper
5513{
5514 return if defined $language_scratch{'lex-yacc-done'};
5515 $language_scratch{'lex-yacc-done'} = 1;
5516
5517 # FIXME: for now, no line number.
5518 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5519 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5520}
5521
5522sub lang_yacc_finish
5523{
5524 return if defined $language_scratch{'yacc-done'};
5525 $language_scratch{'yacc-done'} = 1;
5526
5527 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5528
5529 yacc_lex_finish_helper;
5530}
5531
5532
5533sub lang_lex_finish
5534{
5535 return if defined $language_scratch{'lex-done'};
5536 $language_scratch{'lex-done'} = 1;
5537
5538 yacc_lex_finish_helper;
5539}
5540
5541
5542# Given a hash table of linker names, pick the name that has the most
5543# precedence. This is lame, but something has to have global
5544# knowledge in order to eliminate the conflict. Add more linkers as
5545# required.
5546sub resolve_linker
5547{
5548 my (%linkers) = @_;
5549
5550 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5551 {
5552 return $l if defined $linkers{$l};
5553 }
5554 return 'LINK';
5555}
5556
5557# Called to indicate that an extension was used.
5558sub saw_extension
5559{
5560 my ($ext) = @_;
5561 if (! defined $extension_seen{$ext})
5562 {
5563 $extension_seen{$ext} = 1;
5564 }
5565 else
5566 {
5567 ++$extension_seen{$ext};
5568 }
5569}
5570
5571# Return the number of files seen for a given language. Knows about
5572# special cases we care about. FIXME: this is hideous. We need
5573# something that involves real language objects. For instance yacc
5574# and yaccxx could both derive from a common yacc class which would
5575# know about the strange ylwrap requirement. (Or better yet we could
5576# just not support legacy yacc!)
5577sub count_files_for_language
5578{
5579 my ($name) = @_;
5580
5581 my @names;
5582 if ($name eq 'yacc' || $name eq 'yaccxx')
5583 {
5584 @names = ('yacc', 'yaccxx');
5585 }
5586 elsif ($name eq 'lex' || $name eq 'lexxx')
5587 {
5588 @names = ('lex', 'lexxx');
5589 }
5590 else
5591 {
5592 @names = ($name);
5593 }
5594
5595 my $r = 0;
5596 foreach $name (@names)
5597 {
5598 my $lang = $languages{$name};
5599 foreach my $ext (@{$lang->extensions})
5600 {
5601 $r += $extension_seen{$ext}
5602 if defined $extension_seen{$ext};
5603 }
5604 }
5605
5606 return $r
5607}
5608
5609# Called to ask whether source files have been seen . If HEADERS is 1,
5610# headers can be included.
5611sub saw_sources_p
5612{
5613 my ($headers) = @_;
5614
5615 # count all the sources
5616 my $count = 0;
5617 foreach my $val (values %extension_seen)
5618 {
5619 $count += $val;
5620 }
5621
5622 if (!$headers)
5623 {
5624 $count -= count_files_for_language ('header');
5625 }
5626
5627 return $count > 0;
5628}
5629
5630
5631# register_language (%ATTRIBUTE)
5632# ------------------------------
5633# Register a single language.
5634# Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5635sub register_language (%)
5636{
5637 my (%option) = @_;
5638
5639 # Set the defaults.
5640 $option{'ansi'} = 0
5641 unless defined $option{'ansi'};
5642 $option{'autodep'} = 'no'
5643 unless defined $option{'autodep'};
5644 $option{'linker'} = ''
5645 unless defined $option{'linker'};
5646 $option{'flags'} = []
5647 unless defined $option{'flags'};
5648 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5649 unless defined $option{'output_extensions'};
5650 $option{'nodist_specific'} = 0
5651 unless defined $option{'nodist_specific'};
5652
5653 my $lang = new Language (%option);
5654
5655 # Fill indexes.
5656 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5657 $languages{$lang->name} = $lang;
5658 my $link = $lang->linker;
5659 if ($link)
5660 {
5661 if (exists $link_languages{$link})
5662 {
5663 prog_error ("`$link' has different definitions in "
5664 . $lang->name . " and " . $link_languages{$link}->name)
5665 if $lang->link ne $link_languages{$link}->link;
5666 }
5667 else
5668 {
5669 $link_languages{$link} = $lang;
5670 }
5671 }
5672
5673 # Update the pattern of known extensions.
5674 accept_extensions (@{$lang->extensions});
5675
5676 # Upate the $suffix_rule map.
5677 foreach my $suffix (@{$lang->extensions})
5678 {
5679 foreach my $dest (&{$lang->output_extensions} ($suffix))
5680 {
5681 register_suffix_rule (INTERNAL, $suffix, $dest);
5682 }
5683 }
5684}
5685
5686# derive_suffix ($EXT, $OBJ)
5687# --------------------------
5688# This function is used to find a path from a user-specified suffix $EXT
5689# to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5690sub derive_suffix ($$)
5691{
5692 my ($source_ext, $obj) = @_;
5693
5694 while (! $extension_map{$source_ext}
5695 && $source_ext ne $obj
5696 && exists $suffix_rules->{$source_ext}
5697 && exists $suffix_rules->{$source_ext}{$obj})
5698 {
5699 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5700 }
5701
5702 return $source_ext;
5703}
5704
5705
5706################################################################
5707
5708# Pretty-print something and append to output_rules.
5709sub pretty_print_rule
5710{
5711 $output_rules .= &makefile_wrap (@_);
5712}
5713
5714
5715################################################################
5716
5717
5718## -------------------------------- ##
5719## Handling the conditional stack. ##
5720## -------------------------------- ##
5721
5722
5723# $STRING
5724# make_conditional_string ($NEGATE, $COND)
5725# ----------------------------------------
5726sub make_conditional_string ($$)
5727{
5728 my ($negate, $cond) = @_;
5729 $cond = "${cond}_TRUE"
5730 unless $cond =~ /^TRUE|FALSE$/;
5731 $cond = Automake::Condition::conditional_negate ($cond)
5732 if $negate;
5733 return $cond;
5734}
5735
5736
5737my %_am_macro_for_cond =
5738 (
5739 AMDEP => "one of the compiler tests\n"
5740 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5741 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5742 am__fastdepCC => 'AC_PROG_CC',
5743 am__fastdepCCAS => 'AM_PROG_AS',
5744 am__fastdepCXX => 'AC_PROG_CXX',
5745 am__fastdepGCJ => 'AM_PROG_GCJ',
5746 am__fastdepOBJC => 'AC_PROG_OBJC',
5747 am__fastdepUPC => 'AM_PROG_UPC'
5748 );
5749
5750# $COND
5751# cond_stack_if ($NEGATE, $COND, $WHERE)
5752# --------------------------------------
5753sub cond_stack_if ($$$)
5754{
5755 my ($negate, $cond, $where) = @_;
5756
5757 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5758 {
5759 my $text = "$cond does not appear in AM_CONDITIONAL";
5760 my $scope = US_LOCAL;
5761 if (exists $_am_macro_for_cond{$cond})
5762 {
5763 my $mac = $_am_macro_for_cond{$cond};
5764 $text .= "\n The usual way to define `$cond' is to add ";
5765 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5766 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5767 # These warnings appear in Automake files (depend2.am),
5768 # so there is no need to display them more than once:
5769 $scope = US_GLOBAL;
5770 }
5771 error $where, $text, uniq_scope => $scope;
5772 }
5773
5774 push (@cond_stack, make_conditional_string ($negate, $cond));
5775
5776 return new Automake::Condition (@cond_stack);
5777}
5778
5779
5780# $COND
5781# cond_stack_else ($NEGATE, $COND, $WHERE)
5782# ----------------------------------------
5783sub cond_stack_else ($$$)
5784{
5785 my ($negate, $cond, $where) = @_;
5786
5787 if (! @cond_stack)
5788 {
5789 error $where, "else without if";
5790 return FALSE;
5791 }
5792
5793 $cond_stack[$#cond_stack] =
5794 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5795
5796 # If $COND is given, check against it.
5797 if (defined $cond)
5798 {
5799 $cond = make_conditional_string ($negate, $cond);
5800
5801 error ($where, "else reminder ($negate$cond) incompatible with "
5802 . "current conditional: $cond_stack[$#cond_stack]")
5803 if $cond_stack[$#cond_stack] ne $cond;
5804 }
5805
5806 return new Automake::Condition (@cond_stack);
5807}
5808
5809
5810# $COND
5811# cond_stack_endif ($NEGATE, $COND, $WHERE)
5812# -----------------------------------------
5813sub cond_stack_endif ($$$)
5814{
5815 my ($negate, $cond, $where) = @_;
5816 my $old_cond;
5817
5818 if (! @cond_stack)
5819 {
5820 error $where, "endif without if";
5821 return TRUE;
5822 }
5823
5824 # If $COND is given, check against it.
5825 if (defined $cond)
5826 {
5827 $cond = make_conditional_string ($negate, $cond);
5828
5829 error ($where, "endif reminder ($negate$cond) incompatible with "
5830 . "current conditional: $cond_stack[$#cond_stack]")
5831 if $cond_stack[$#cond_stack] ne $cond;
5832 }
5833
5834 pop @cond_stack;
5835
5836 return new Automake::Condition (@cond_stack);
5837}
5838
5839
5840
5841
5842
5843## ------------------------ ##
5844## Handling the variables. ##
5845## ------------------------ ##
5846
5847
5848# &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5849# -----------------------------------------------------
5850# Like define_variable, but the value is a list, and the variable may
5851# be defined conditionally. The second argument is the Condition
5852# under which the value should be defined; this should be the empty
5853# string to define the variable unconditionally. The third argument
5854# is a list holding the values to use for the variable. The value is
5855# pretty printed in the output file.
5856sub define_pretty_variable ($$$@)
5857{
5858 my ($var, $cond, $where, @value) = @_;
5859
5860 if (! vardef ($var, $cond))
5861 {
5862 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5863 '', $where, VAR_PRETTY);
5864 rvar ($var)->rdef ($cond)->set_seen;
5865 }
5866}
5867
5868
5869# define_variable ($VAR, $VALUE, $WHERE)
5870# --------------------------------------
5871# Define a new Automake Makefile variable VAR to VALUE, but only if
5872# not already defined.
5873sub define_variable ($$$)
5874{
5875 my ($var, $value, $where) = @_;
5876 define_pretty_variable ($var, TRUE, $where, $value);
5877}
5878
5879
5880# define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5881# -----------------------------------------------------------
5882# Define the $VAR which content is the list of file names composed of
5883# a @BASENAME and the $EXTENSION.
5884sub define_files_variable ($\@$$)
5885{
5886 my ($var, $basename, $extension, $where) = @_;
5887 define_variable ($var,
5888 join (' ', map { "$_.$extension" } @$basename),
5889 $where);
5890}
5891
5892
5893# Like define_variable, but define a variable to be the configure
5894# substitution by the same name.
5895sub define_configure_variable ($)
5896{
5897 my ($var) = @_;
5898
5899 my $pretty = VAR_ASIS;
5900 my $owner = VAR_CONFIGURE;
5901
5902 # Some variables we do not want to output. For instance it
5903 # would be a bad idea to output `U = @U@` when `@U@` can be
5904 # substituted as `\`.
5905 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
5906
5907 # ANSI2KNR is a variable that Automake wants to redefine, so
5908 # it must be owned by Automake. (It is also used as a proof
5909 # that AM_C_PROTOTYPES has been run, that's why we do not simply
5910 # omit the AC_SUBST.)
5911 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
5912
5913 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5914 '', $configure_vars{$var}, $pretty);
5915}
5916
5917
5918# define_compiler_variable ($LANG)
5919# --------------------------------
5920# Define a compiler variable. We also handle defining the `LT'
5921# version of the command when using libtool.
5922sub define_compiler_variable ($)
5923{
5924 my ($lang) = @_;
5925
5926 my ($var, $value) = ($lang->compiler, $lang->compile);
5927 my $libtool_tag = '';
5928 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5929 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5930 &define_variable ($var, $value, INTERNAL);
5931 &define_variable ("LT$var",
5932 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5933 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5934 INTERNAL)
5935 if var ('LIBTOOL');
5936}
5937
5938
5939# define_linker_variable ($LANG)
5940# ------------------------------
5941# Define linker variables.
5942sub define_linker_variable ($)
5943{
5944 my ($lang) = @_;
5945
5946 my $libtool_tag = '';
5947 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5948 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5949 # CCLD = $(CC).
5950 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5951 # CCLINK = $(CCLD) blah blah...
5952 &define_variable ($lang->linker,
5953 ((var ('LIBTOOL') ?
5954 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5955 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5956 . $lang->link),
5957 INTERNAL);
5958}
5959
5960sub define_per_target_linker_variable ($$)
5961{
5962 my ($linker, $target) = @_;
5963
5964 # If the user wrote a custom link command, we don't define ours.
5965 return "${target}_LINK"
5966 if set_seen "${target}_LINK";
5967
5968 my $xlink = $linker ? $linker : 'LINK';
5969
5970 my $lang = $link_languages{$xlink};
5971 prog_error "Unknown language for linker variable `$xlink'"
5972 unless $lang;
5973
5974 my $link_command = $lang->link;
5975 if (var 'LIBTOOL')
5976 {
5977 my $libtool_tag = '';
5978 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5979 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5980
5981 $link_command =
5982 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
5983 . "--mode=link " . $link_command;
5984 }
5985
5986 # Rewrite each occurrence of `AM_$flag' in the link
5987 # command into `${derived}_$flag' if it exists.
5988 my $orig_command = $link_command;
5989 my @flags = (@{$lang->flags}, 'LDFLAGS');
5990 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
5991 for my $flag (@flags)
5992 {
5993 my $val = "${target}_$flag";
5994 $link_command =~ s/\(AM_$flag\)/\($val\)/
5995 if set_seen ($val);
5996 }
5997
5998 # If the computed command is the same as the generic command, use
5999 # the command linker variable.
6000 return $lang->linker
6001 if $link_command eq $orig_command;
6002
6003 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6004 return "${target}_LINK";
6005}
6006
6007################################################################
6008
6009# &check_trailing_slash ($WHERE, $LINE)
6010# --------------------------------------
6011# Return 1 iff $LINE ends with a slash.
6012# Might modify $LINE.
6013sub check_trailing_slash ($\$)
6014{
6015 my ($where, $line) = @_;
6016
6017 # Ignore `##' lines.
6018 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6019
6020 # Catch and fix a common error.
6021 msg "syntax", $where, "whitespace following trailing backslash"
6022 if $$line =~ s/\\\s+\n$/\\\n/;
6023
6024 return $$line =~ /\\$/;
6025}
6026
6027
6028# &read_am_file ($AMFILE, $WHERE)
6029# -------------------------------
6030# Read Makefile.am and set up %contents. Simultaneously copy lines
6031# from Makefile.am into $output_trailer, or define variables as
6032# appropriate. NOTE we put rules in the trailer section. We want
6033# user rules to come after our generated stuff.
6034sub read_am_file ($$)
6035{
6036 my ($amfile, $where) = @_;
6037
6038 my $am_file = new Automake::XFile ("< $amfile");
6039 verb "reading $amfile";
6040
6041 # Keep track of the youngest output dependency.
6042 my $mtime = mtime $amfile;
6043 $output_deps_greatest_timestamp = $mtime
6044 if $mtime > $output_deps_greatest_timestamp;
6045
6046 my $spacing = '';
6047 my $comment = '';
6048 my $blank = 0;
6049 my $saw_bk = 0;
6050 my $var_look = VAR_ASIS;
6051
6052 use constant IN_VAR_DEF => 0;
6053 use constant IN_RULE_DEF => 1;
6054 use constant IN_COMMENT => 2;
6055 my $prev_state = IN_RULE_DEF;
6056
6057 while ($_ = $am_file->getline)
6058 {
6059 $where->set ("$amfile:$.");
6060 if (/$IGNORE_PATTERN/o)
6061 {
6062 # Merely delete comments beginning with two hashes.
6063 }
6064 elsif (/$WHITE_PATTERN/o)
6065 {
6066 error $where, "blank line following trailing backslash"
6067 if $saw_bk;
6068 # Stick a single white line before the incoming macro or rule.
6069 $spacing = "\n";
6070 $blank = 1;
6071 # Flush all comments seen so far.
6072 if ($comment ne '')
6073 {
6074 $output_vars .= $comment;
6075 $comment = '';
6076 }
6077 }
6078 elsif (/$COMMENT_PATTERN/o)
6079 {
6080 # Stick comments before the incoming macro or rule. Make
6081 # sure a blank line precedes the first block of comments.
6082 $spacing = "\n" unless $blank;
6083 $blank = 1;
6084 $comment .= $spacing . $_;
6085 $spacing = '';
6086 $prev_state = IN_COMMENT;
6087 }
6088 else
6089 {
6090 last;
6091 }
6092 $saw_bk = check_trailing_slash ($where, $_);
6093 }
6094
6095 # We save the conditional stack on entry, and then check to make
6096 # sure it is the same on exit. This lets us conditionally include
6097 # other files.
6098 my @saved_cond_stack = @cond_stack;
6099 my $cond = new Automake::Condition (@cond_stack);
6100
6101 my $last_var_name = '';
6102 my $last_var_type = '';
6103 my $last_var_value = '';
6104 my $last_where;
6105 # FIXME: shouldn't use $_ in this loop; it is too big.
6106 while ($_)
6107 {
6108 $where->set ("$amfile:$.");
6109
6110 # Make sure the line is \n-terminated.
6111 chomp;
6112 $_ .= "\n";
6113
6114 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6115 # used by users. @MAINT@ is an anachronism now.
6116 $_ =~ s/\@MAINT\@//g
6117 unless $seen_maint_mode;
6118
6119 my $new_saw_bk = check_trailing_slash ($where, $_);
6120
6121 if (/$IGNORE_PATTERN/o)
6122 {
6123 # Merely delete comments beginning with two hashes.
6124
6125 # Keep any backslash from the previous line.
6126 $new_saw_bk = $saw_bk;
6127 }
6128 elsif (/$WHITE_PATTERN/o)
6129 {
6130 # Stick a single white line before the incoming macro or rule.
6131 $spacing = "\n";
6132 error $where, "blank line following trailing backslash"
6133 if $saw_bk;
6134 }
6135 elsif (/$COMMENT_PATTERN/o)
6136 {
6137 error $where, "comment following trailing backslash"
6138 if $saw_bk && $comment eq '';
6139
6140 # Stick comments before the incoming macro or rule.
6141 $comment .= $spacing . $_;
6142 $spacing = '';
6143 $prev_state = IN_COMMENT;
6144 }
6145 elsif ($saw_bk)
6146 {
6147 if ($prev_state == IN_RULE_DEF)
6148 {
6149 my $cond = new Automake::Condition @cond_stack;
6150 $output_trailer .= $cond->subst_string;
6151 $output_trailer .= $_;
6152 }
6153 elsif ($prev_state == IN_COMMENT)
6154 {
6155 # If the line doesn't start with a `#', add it.
6156 # We do this because a continued comment like
6157 # # A = foo \
6158 # bar \
6159 # baz
6160 # is not portable. BSD make doesn't honor
6161 # escaped newlines in comments.
6162 s/^#?/#/;
6163 $comment .= $spacing . $_;
6164 }
6165 else # $prev_state == IN_VAR_DEF
6166 {
6167 $last_var_value .= ' '
6168 unless $last_var_value =~ /\s$/;
6169 $last_var_value .= $_;
6170
6171 if (!/\\$/)
6172 {
6173 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6174 $last_var_type, $cond,
6175 $last_var_value, $comment,
6176 $last_where, VAR_ASIS)
6177 if $cond != FALSE;
6178 $comment = $spacing = '';
6179 }
6180 }
6181 }
6182
6183 elsif (/$IF_PATTERN/o)
6184 {
6185 $cond = cond_stack_if ($1, $2, $where);
6186 }
6187 elsif (/$ELSE_PATTERN/o)
6188 {
6189 $cond = cond_stack_else ($1, $2, $where);
6190 }
6191 elsif (/$ENDIF_PATTERN/o)
6192 {
6193 $cond = cond_stack_endif ($1, $2, $where);
6194 }
6195
6196 elsif (/$RULE_PATTERN/o)
6197 {
6198 # Found a rule.
6199 $prev_state = IN_RULE_DEF;
6200
6201 # For now we have to output all definitions of user rules
6202 # and can't diagnose duplicates (see the comment in
6203 # Automake::Rule::define). So we go on and ignore the return value.
6204 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6205
6206 check_variable_expansions ($_, $where);
6207
6208 $output_trailer .= $comment . $spacing;
6209 my $cond = new Automake::Condition @cond_stack;
6210 $output_trailer .= $cond->subst_string;
6211 $output_trailer .= $_;
6212 $comment = $spacing = '';
6213 }
6214 elsif (/$ASSIGNMENT_PATTERN/o)
6215 {
6216 # Found a macro definition.
6217 $prev_state = IN_VAR_DEF;
6218 $last_var_name = $1;
6219 $last_var_type = $2;
6220 $last_var_value = $3;
6221 $last_where = $where->clone;
6222 if ($3 ne '' && substr ($3, -1) eq "\\")
6223 {
6224 # We preserve the `\' because otherwise the long lines
6225 # that are generated will be truncated by broken
6226 # `sed's.
6227 $last_var_value = $3 . "\n";
6228 }
6229 # Normally we try to output variable definitions in the
6230 # same format they were input. However, POSIX compliant
6231 # systems are not required to support lines longer than
6232 # 2048 bytes (most notably, some sed implementation are
6233 # limited to 4000 bytes, and sed is used by config.status
6234 # to rewrite Makefile.in into Makefile). Moreover nobody
6235 # would really write such long lines by hand since it is
6236 # hardly maintainable. So if a line is longer that 1000
6237 # bytes (an arbitrary limit), assume it has been
6238 # automatically generated by some tools, and flatten the
6239 # variable definition. Otherwise, keep the variable as it
6240 # as been input.
6241 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6242
6243 if (!/\\$/)
6244 {
6245 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6246 $last_var_type, $cond,
6247 $last_var_value, $comment,
6248 $last_where, $var_look)
6249 if $cond != FALSE;
6250 $comment = $spacing = '';
6251 $var_look = VAR_ASIS;
6252 }
6253 }
6254 elsif (/$INCLUDE_PATTERN/o)
6255 {
6256 my $path = $1;
6257
6258 if ($path =~ s/^\$\(top_srcdir\)\///)
6259 {
6260 push (@include_stack, "\$\(top_srcdir\)/$path");
6261 # Distribute any included file.
6262
6263 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6264 # otherwise OSF make will implicitly copy the included
6265 # file in the build tree during `make distdir' to satisfy
6266 # the dependency.
6267 # (subdircond2.test and subdircond3.test will fail.)
6268 push_dist_common ("\$\(top_srcdir\)/$path");
6269 }
6270 else
6271 {
6272 $path =~ s/\$\(srcdir\)\///;
6273 push (@include_stack, "\$\(srcdir\)/$path");
6274 # Always use the $(srcdir) prefix in DIST_COMMON,
6275 # otherwise OSF make will implicitly copy the included
6276 # file in the build tree during `make distdir' to satisfy
6277 # the dependency.
6278 # (subdircond2.test and subdircond3.test will fail.)
6279 push_dist_common ("\$\(srcdir\)/$path");
6280 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6281 }
6282 $where->push_context ("`$path' included from here");
6283 &read_am_file ($path, $where);
6284 $where->pop_context;
6285 }
6286 else
6287 {
6288 # This isn't an error; it is probably a continued rule.
6289 # In fact, this is what we assume.
6290 $prev_state = IN_RULE_DEF;
6291 check_variable_expansions ($_, $where);
6292 $output_trailer .= $comment . $spacing;
6293 my $cond = new Automake::Condition @cond_stack;
6294 $output_trailer .= $cond->subst_string;
6295 $output_trailer .= $_;
6296 $comment = $spacing = '';
6297 error $where, "`#' comment at start of rule is unportable"
6298 if $_ =~ /^\t\s*\#/;
6299 }
6300
6301 $saw_bk = $new_saw_bk;
6302 $_ = $am_file->getline;
6303 }
6304
6305 $output_trailer .= $comment;
6306
6307 error ($where, "trailing backslash on last line")
6308 if $saw_bk;
6309
6310 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6311 : "too many conditionals closed in include file"))
6312 if "@saved_cond_stack" ne "@cond_stack";
6313}
6314
6315
6316# define_standard_variables ()
6317# ----------------------------
6318# A helper for read_main_am_file which initializes configure variables
6319# and variables from header-vars.am.
6320sub define_standard_variables
6321{
6322 my $saved_output_vars = $output_vars;
6323 my ($comments, undef, $rules) =
6324 file_contents_internal (1, "$libdir/am/header-vars.am",
6325 new Automake::Location);
6326
6327 foreach my $var (sort keys %configure_vars)
6328 {
6329 &define_configure_variable ($var);
6330 }
6331
6332 $output_vars .= $comments . $rules;
6333}
6334
6335# Read main am file.
6336sub read_main_am_file
6337{
6338 my ($amfile) = @_;
6339
6340 # This supports the strange variable tricks we are about to play.
6341 prog_error (macros_dump () . "variable defined before read_main_am_file")
6342 if (scalar (variables) > 0);
6343
6344 # Generate copyright header for generated Makefile.in.
6345 # We do discard the output of predefined variables, handled below.
6346 $output_vars = ("# $in_file_name generated by automake "
6347 . $VERSION . " from $am_file_name.\n");
6348 $output_vars .= '# ' . subst ('configure_input') . "\n";
6349 $output_vars .= $gen_copyright;
6350
6351 # We want to predefine as many variables as possible. This lets
6352 # the user set them with `+=' in Makefile.am.
6353 &define_standard_variables;
6354
6355 # Read user file, which might override some of our values.
6356 &read_am_file ($amfile, new Automake::Location);
6357}
6358
6359
6360
6361################################################################
6362
6363# $FLATTENED
6364# &flatten ($STRING)
6365# ------------------
6366# Flatten the $STRING and return the result.
6367sub flatten
6368{
6369 $_ = shift;
6370
6371 s/\\\n//somg;
6372 s/\s+/ /g;
6373 s/^ //;
6374 s/ $//;
6375
6376 return $_;
6377}
6378
6379# transform($TOKEN, \%PAIRS)
6380# ==========================
6381# If ($TOKEN, $VAL) is in %PAIRS:
6382# - replaces %$TOKEN% with $VAL,
6383# - enables/disables ?$TOKEN? and ?!$TOKEN?,
6384# - replaces %?$TOKEN% with TRUE or FALSE.
6385sub transform($$)
6386{
6387 my ($token, $transform) = @_;
6388
6389 if (substr ($token, 0, 1) eq '%')
6390 {
6391 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6392 $token = substr ($token, 1 + $cond, -1);
6393 my $val = $transform->{$token};
6394 prog_error "Unknown %token% `$token'" unless defined $val;
6395 if ($cond)
6396 {
6397 return $val ? 'TRUE' : 'FALSE';
6398 }
6399 else
6400 {
6401 return $val;
6402 }
6403 }
6404 # Now $token is '?xxx?' or '?!xxx?'.
6405 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6406 $token = substr ($token, 1 + $neg, -1);
6407 my $val = $transform->{$token};
6408 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6409 return (!!$val == $neg) ? '##%' : '';
6410}
6411
6412# @PARAGRAPHS
6413# &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6414# ------------------------------------------
6415# Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6416# paragraphs.
6417sub make_paragraphs ($%)
6418{
6419 my ($file, %transform) = @_;
6420
6421 # Complete %transform with global options.
6422 # Note that %transform goes last, so it overrides global options.
6423 %transform = ('CYGNUS' => !! option 'cygnus',
6424 'MAINTAINER-MODE'
6425 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6426
6427 'BZIP2' => !! option 'dist-bzip2',
6428 'COMPRESS' => !! option 'dist-tarZ',
6429 'GZIP' => ! option 'no-dist-gzip',
6430 'SHAR' => !! option 'dist-shar',
6431 'ZIP' => !! option 'dist-zip',
6432
6433 'INSTALL-INFO' => ! option 'no-installinfo',
6434 'INSTALL-MAN' => ! option 'no-installman',
6435 'CK-NEWS' => !! option 'check-news',
6436
6437 'SUBDIRS' => !! var ('SUBDIRS'),
6438 'TOPDIR_P' => $relative_dir eq '.',
6439
6440 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6441 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6442 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6443
6444 'LIBTOOL' => !! var ('LIBTOOL'),
6445 'NONLIBTOOL' => 1,
6446 'FIRST' => ! $transformed_files{$file},
6447 %transform);
6448
6449 $transformed_files{$file} = 1;
6450 $_ = $am_file_cache{$file};
6451
6452 if (! defined $_)
6453 {
6454 verb "reading $file";
6455 # Swallow the whole file.
6456 my $fc_file = new Automake::XFile "< $file";
6457 my $saved_dollar_slash = $/;
6458 undef $/;
6459 $_ = $fc_file->getline;
6460 $/ = $saved_dollar_slash;
6461 $fc_file->close;
6462
6463 # Remove ##-comments.
6464 # Besides we don't need more than two consecutive new-lines.
6465 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6466
6467 $am_file_cache{$file} = $_;
6468 }
6469
6470 # Substitute Automake template tokens.
6471 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6472 # transform() may have added some ##%-comments to strip.
6473 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6474 # ####### and do not remove the latter.)
6475 s/^[ \t]*(?:##%)+.*\n//gm;
6476
6477 # Split at unescaped new lines.
6478 my @lines = split (/(?<!\\)\n/, $_);
6479 my @res;
6480
6481 while (defined ($_ = shift @lines))
6482 {
6483 my $paragraph = $_;
6484 # If we are a rule, eat as long as we start with a tab.
6485 if (/$RULE_PATTERN/smo)
6486 {
6487 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6488 {
6489 $paragraph .= "\n$_";
6490 }
6491 unshift (@lines, $_);
6492 }
6493
6494 # If we are a comments, eat as much comments as you can.
6495 elsif (/$COMMENT_PATTERN/smo)
6496 {
6497 while (defined ($_ = shift @lines)
6498 && $_ =~ /$COMMENT_PATTERN/smo)
6499 {
6500 $paragraph .= "\n$_";
6501 }
6502 unshift (@lines, $_);
6503 }
6504
6505 push @res, $paragraph;
6506 }
6507
6508 return @res;
6509}
6510
6511
6512
6513# ($COMMENT, $VARIABLES, $RULES)
6514# &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6515# -------------------------------------------------------------
6516# Return contents of a file from $libdir/am, automatically skipping
6517# macros or rules which are already known. $IS_AM iff the caller is
6518# reading an Automake file (as opposed to the user's Makefile.am).
6519sub file_contents_internal ($$$%)
6520{
6521 my ($is_am, $file, $where, %transform) = @_;
6522
6523 $where->set ($file);
6524
6525 my $result_vars = '';
6526 my $result_rules = '';
6527 my $comment = '';
6528 my $spacing = '';
6529
6530 # The following flags are used to track rules spanning across
6531 # multiple paragraphs.
6532 my $is_rule = 0; # 1 if we are processing a rule.
6533 my $discard_rule = 0; # 1 if the current rule should not be output.
6534
6535 # We save the conditional stack on entry, and then check to make
6536 # sure it is the same on exit. This lets us conditionally include
6537 # other files.
6538 my @saved_cond_stack = @cond_stack;
6539 my $cond = new Automake::Condition (@cond_stack);
6540
6541 foreach (make_paragraphs ($file, %transform))
6542 {
6543 # FIXME: no line number available.
6544 $where->set ($file);
6545
6546 # Sanity checks.
6547 error $where, "blank line following trailing backslash:\n$_"
6548 if /\\$/;
6549 error $where, "comment following trailing backslash:\n$_"
6550 if /\\#/;
6551
6552 if (/^$/)
6553 {
6554 $is_rule = 0;
6555 # Stick empty line before the incoming macro or rule.
6556 $spacing = "\n";
6557 }
6558 elsif (/$COMMENT_PATTERN/mso)
6559 {
6560 $is_rule = 0;
6561 # Stick comments before the incoming macro or rule.
6562 $comment = "$_\n";
6563 }
6564
6565 # Handle inclusion of other files.
6566 elsif (/$INCLUDE_PATTERN/o)
6567 {
6568 if ($cond != FALSE)
6569 {
6570 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6571 $where->push_context ("`$file' included from here");
6572 # N-ary `.=' fails.
6573 my ($com, $vars, $rules)
6574 = file_contents_internal ($is_am, $file, $where, %transform);
6575 $where->pop_context;
6576 $comment .= $com;
6577 $result_vars .= $vars;
6578 $result_rules .= $rules;
6579 }
6580 }
6581
6582 # Handling the conditionals.
6583 elsif (/$IF_PATTERN/o)
6584 {
6585 $cond = cond_stack_if ($1, $2, $file);
6586 }
6587 elsif (/$ELSE_PATTERN/o)
6588 {
6589 $cond = cond_stack_else ($1, $2, $file);
6590 }
6591 elsif (/$ENDIF_PATTERN/o)
6592 {
6593 $cond = cond_stack_endif ($1, $2, $file);
6594 }
6595
6596 # Handling rules.
6597 elsif (/$RULE_PATTERN/mso)
6598 {
6599 $is_rule = 1;
6600 $discard_rule = 0;
6601 # Separate relationship from optional actions: the first
6602 # `new-line tab" not preceded by backslash (continuation
6603 # line).
6604 my $paragraph = $_;
6605 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6606 my ($relationship, $actions) = ($1, $2 || '');
6607
6608 # Separate targets from dependencies: the first colon.
6609 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6610 my ($targets, $dependencies) = ($1, $2);
6611 # Remove the escaped new lines.
6612 # I don't know why, but I have to use a tmp $flat_deps.
6613 my $flat_deps = &flatten ($dependencies);
6614 my @deps = split (' ', $flat_deps);
6615
6616 foreach (split (' ' , $targets))
6617 {
6618 # FIXME: 1. We are not robust to people defining several targets
6619 # at once, only some of them being in %dependencies. The
6620 # actions from the targets in %dependencies are usually generated
6621 # from the content of %actions, but if some targets in $targets
6622 # are not in %dependencies the ELSE branch will output
6623 # a rule for all $targets (i.e. the targets which are both
6624 # in %dependencies and $targets will have two rules).
6625
6626 # FIXME: 2. The logic here is not able to output a
6627 # multi-paragraph rule several time (e.g. for each condition
6628 # it is defined for) because it only knows the first paragraph.
6629
6630 # FIXME: 3. We are not robust to people defining a subset
6631 # of a previously defined "multiple-target" rule. E.g.
6632 # `foo:' after `foo bar:'.
6633
6634 # Output only if not in FALSE.
6635 if (defined $dependencies{$_} && $cond != FALSE)
6636 {
6637 &depend ($_, @deps);
6638 if ($actions{$_})
6639 {
6640 $actions{$_} .= "\n$actions" if $actions;
6641 }
6642 else
6643 {
6644 $actions{$_} = $actions;
6645 }
6646 }
6647 else
6648 {
6649 # Free-lance dependency. Output the rule for all the
6650 # targets instead of one by one.
6651 my @undefined_conds =
6652 Automake::Rule::define ($targets, $file,
6653 $is_am ? RULE_AUTOMAKE : RULE_USER,
6654 $cond, $where);
6655 for my $undefined_cond (@undefined_conds)
6656 {
6657 my $condparagraph = $paragraph;
6658 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6659 $result_rules .= "$spacing$comment$condparagraph\n";
6660 }
6661 if (scalar @undefined_conds == 0)
6662 {
6663 # Remember to discard next paragraphs
6664 # if they belong to this rule.
6665 # (but see also FIXME: #2 above.)
6666 $discard_rule = 1;
6667 }
6668 $comment = $spacing = '';
6669 last;
6670 }
6671 }
6672 }
6673
6674 elsif (/$ASSIGNMENT_PATTERN/mso)
6675 {
6676 my ($var, $type, $val) = ($1, $2, $3);
6677 error $where, "variable `$var' with trailing backslash"
6678 if /\\$/;
6679
6680 $is_rule = 0;
6681
6682 Automake::Variable::define ($var,
6683 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6684 $type, $cond, $val, $comment, $where,
6685 VAR_ASIS)
6686 if $cond != FALSE;
6687
6688 $comment = $spacing = '';
6689 }
6690 else
6691 {
6692 # This isn't an error; it is probably some tokens which
6693 # configure is supposed to replace, such as `@SET-MAKE@',
6694 # or some part of a rule cut by an if/endif.
6695 if (! $cond->false && ! ($is_rule && $discard_rule))
6696 {
6697 s/^/$cond->subst_string/gme;
6698 $result_rules .= "$spacing$comment$_\n";
6699 }
6700 $comment = $spacing = '';
6701 }
6702 }
6703
6704 error ($where, @cond_stack ?
6705 "unterminated conditionals: @cond_stack" :
6706 "too many conditionals closed in include file")
6707 if "@saved_cond_stack" ne "@cond_stack";
6708
6709 return ($comment, $result_vars, $result_rules);
6710}
6711
6712
6713# $CONTENTS
6714# &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6715# ------------------------------------------------
6716# Return contents of a file from $libdir/am, automatically skipping
6717# macros or rules which are already known.
6718sub file_contents ($$%)
6719{
6720 my ($basename, $where, %transform) = @_;
6721 my ($comments, $variables, $rules) =
6722 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6723 %transform);
6724 return "$comments$variables$rules";
6725}
6726
6727
6728# @PREFIX
6729# &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6730# -----------------------------------------------------
6731# Find all variable prefixes that are used for install directories. A
6732# prefix `zar' qualifies iff:
6733#
6734# * `zardir' is a variable.
6735# * `zar_PRIMARY' is a variable.
6736#
6737# As a side effect, it looks for misspellings. It is an error to have
6738# a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6739# "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6740# of the same name (with "dir" appended) exists. For instance, if the
6741# variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6742# This is to provide a little extra flexibility in those cases which
6743# need it.
6744sub am_primary_prefixes ($$@)
6745{
6746 my ($primary, $can_dist, @prefixes) = @_;
6747
6748 local $_;
6749 my %valid = map { $_ => 0 } @prefixes;
6750 $valid{'EXTRA'} = 0;
6751 foreach my $var (variables $primary)
6752 {
6753 # Automake is allowed to define variables that look like primaries
6754 # but which aren't. E.g. INSTALL_sh_DATA.
6755 # Autoconf can also define variables like INSTALL_DATA, so
6756 # ignore all configure variables (at least those which are not
6757 # redefined in Makefile.am).
6758 # FIXME: We should make sure that these variables are not
6759 # conditionally defined (or else adjust the condition below).
6760 my $def = $var->def (TRUE);
6761 next if $def && $def->owner != VAR_MAKEFILE;
6762
6763 my $varname = $var->name;
6764
6765 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6766 {
6767 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6768 if ($dist ne '' && ! $can_dist)
6769 {
6770 err_var ($var,
6771 "invalid variable `$varname': `dist' is forbidden");
6772 }
6773 # Standard directories must be explicitly allowed.
6774 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6775 {
6776 err_var ($var,
6777 "`${X}dir' is not a legitimate directory " .
6778 "for `$primary'");
6779 }
6780 # A not explicitly valid directory is allowed if Xdir is defined.
6781 elsif (! defined $valid{$X} &&
6782 $var->requires_variables ("`$varname' is used", "${X}dir"))
6783 {
6784 # Nothing to do. Any error message has been output
6785 # by $var->requires_variables.
6786 }
6787 else
6788 {
6789 # Ensure all extended prefixes are actually used.
6790 $valid{"$base$dist$X"} = 1;
6791 }
6792 }
6793 else
6794 {
6795 prog_error "unexpected variable name: $varname";
6796 }
6797 }
6798
6799 # Return only those which are actually defined.
6800 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6801}
6802
6803
6804# Handle `where_HOW' variable magic. Does all lookups, generates
6805# install code, and possibly generates code to define the primary
6806# variable. The first argument is the name of the .am file to munge,
6807# the second argument is the primary variable (e.g. HEADERS), and all
6808# subsequent arguments are possible installation locations.
6809#
6810# Returns list of [$location, $value] pairs, where
6811# $value's are the values in all where_HOW variable, and $location
6812# there associated location (the place here their parent variables were
6813# defined).
6814#
6815# FIXME: this should be rewritten to be cleaner. It should be broken
6816# up into multiple functions.
6817#
6818# Usage is: am_install_var (OPTION..., file, HOW, where...)
6819sub am_install_var
6820{
6821 my (@args) = @_;
6822
6823 my $do_require = 1;
6824 my $can_dist = 0;
6825 my $default_dist = 0;
6826 while (@args)
6827 {
6828 if ($args[0] eq '-noextra')
6829 {
6830 $do_require = 0;
6831 }
6832 elsif ($args[0] eq '-candist')
6833 {
6834 $can_dist = 1;
6835 }
6836 elsif ($args[0] eq '-defaultdist')
6837 {
6838 $default_dist = 1;
6839 $can_dist = 1;
6840 }
6841 elsif ($args[0] !~ /^-/)
6842 {
6843 last;
6844 }
6845 shift (@args);
6846 }
6847
6848 my ($file, $primary, @prefix) = @args;
6849
6850 # Now that configure substitutions are allowed in where_HOW
6851 # variables, it is an error to actually define the primary. We
6852 # allow `JAVA', as it is customarily used to mean the Java
6853 # interpreter. This is but one of several Java hacks. Similarly,
6854 # `PYTHON' is customarily used to mean the Python interpreter.
6855 reject_var $primary, "`$primary' is an anachronism"
6856 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6857
6858 # Get the prefixes which are valid and actually used.
6859 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6860
6861 # If a primary includes a configure substitution, then the EXTRA_
6862 # form is required. Otherwise we can't properly do our job.
6863 my $require_extra;
6864
6865 my @used = ();
6866 my @result = ();
6867
6868 foreach my $X (@prefix)
6869 {
6870 my $nodir_name = $X;
6871 my $one_name = $X . '_' . $primary;
6872 my $one_var = var $one_name;
6873
6874 my $strip_subdir = 1;
6875 # If subdir prefix should be preserved, do so.
6876 if ($nodir_name =~ /^nobase_/)
6877 {
6878 $strip_subdir = 0;
6879 $nodir_name =~ s/^nobase_//;
6880 }
6881
6882 # If files should be distributed, do so.
6883 my $dist_p = 0;
6884 if ($can_dist)
6885 {
6886 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6887 || (! $default_dist && $nodir_name =~ /^dist_/));
6888 $nodir_name =~ s/^(dist|nodist)_//;
6889 }
6890
6891
6892 # Use the location of the currently processed variable.
6893 # We are not processing a particular condition, so pick the first
6894 # available.
6895 my $tmpcond = $one_var->conditions->one_cond;
6896 my $where = $one_var->rdef ($tmpcond)->location->clone;
6897
6898 # Append actual contents of where_PRIMARY variable to
6899 # @result, skipping @substitutions@.
6900 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6901 {
6902 my ($loc, $value) = @$locvals;
6903 # Skip configure substitutions.
6904 if ($value =~ /^\@.*\@$/)
6905 {
6906 if ($nodir_name eq 'EXTRA')
6907 {
6908 error ($where,
6909 "`$one_name' contains configure substitution, "
6910 . "but shouldn't");
6911 }
6912 # Check here to make sure variables defined in
6913 # configure.ac do not imply that EXTRA_PRIMARY
6914 # must be defined.
6915 elsif (! defined $configure_vars{$one_name})
6916 {
6917 $require_extra = $one_name
6918 if $do_require;
6919 }
6920 }
6921 else
6922 {
6923 push (@result, $locvals);
6924 }
6925 }
6926 # A blatant hack: we rewrite each _PROGRAMS primary to include
6927 # EXEEXT.
6928 append_exeext { 1 } $one_name
6929 if $primary eq 'PROGRAMS';
6930 # "EXTRA" shouldn't be used when generating clean targets,
6931 # all, or install targets. We used to warn if EXTRA_FOO was
6932 # defined uselessly, but this was annoying.
6933 next
6934 if $nodir_name eq 'EXTRA';
6935
6936 if ($nodir_name eq 'check')
6937 {
6938 push (@check, '$(' . $one_name . ')');
6939 }
6940 else
6941 {
6942 push (@used, '$(' . $one_name . ')');
6943 }
6944
6945 # Is this to be installed?
6946 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6947
6948 # If so, with install-exec? (or install-data?).
6949 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6950
6951 my $check_options_p = $install_p && !! option 'std-options';
6952
6953 # Use the location of the currently processed variable as context.
6954 $where->push_context ("while processing `$one_name'");
6955
6956 # The variable containing all file to distribute.
6957 my $distvar = "\$($one_name)";
6958 $distvar = shadow_unconditionally ($one_name, $where)
6959 if ($dist_p && $one_var->has_conditional_contents);
6960
6961 # Singular form of $PRIMARY.
6962 (my $one_primary = $primary) =~ s/S$//;
6963 $output_rules .= &file_contents ($file, $where,
6964 PRIMARY => $primary,
6965 ONE_PRIMARY => $one_primary,
6966 DIR => $X,
6967 NDIR => $nodir_name,
6968 BASE => $strip_subdir,
6969
6970 EXEC => $exec_p,
6971 INSTALL => $install_p,
6972 DIST => $dist_p,
6973 DISTVAR => $distvar,
6974 'CK-OPTS' => $check_options_p);
6975 }
6976
6977 # The JAVA variable is used as the name of the Java interpreter.
6978 # The PYTHON variable is used as the name of the Python interpreter.
6979 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6980 {
6981 # Define it.
6982 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6983 $output_vars .= "\n";
6984 }
6985
6986 err_var ($require_extra,
6987 "`$require_extra' contains configure substitution,\n"
6988 . "but `EXTRA_$primary' not defined")
6989 if ($require_extra && ! var ('EXTRA_' . $primary));
6990
6991 # Push here because PRIMARY might be configure time determined.
6992 push (@all, '$(' . $primary . ')')
6993 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6994
6995 # Make the result unique. This lets the user use conditionals in
6996 # a natural way, but still lets us program lazily -- we don't have
6997 # to worry about handling a particular object more than once.
6998 # We will keep only one location per object.
6999 my %result = ();
7000 for my $pair (@result)
7001 {
7002 my ($loc, $val) = @$pair;
7003 $result{$val} = $loc;
7004 }
7005 my @l = sort keys %result;
7006 return map { [$result{$_}->clone, $_] } @l;
7007}
7008
7009
7010################################################################
7011
7012# Each key in this hash is the name of a directory holding a
7013# Makefile.in. These variables are local to `is_make_dir'.
7014my %make_dirs = ();
7015my $make_dirs_set = 0;
7016
7017sub is_make_dir
7018{
7019 my ($dir) = @_;
7020 if (! $make_dirs_set)
7021 {
7022 foreach my $iter (@configure_input_files)
7023 {
7024 $make_dirs{dirname ($iter)} = 1;
7025 }
7026 # We also want to notice Makefile.in's.
7027 foreach my $iter (@other_input_files)
7028 {
7029 if ($iter =~ /Makefile\.in$/)
7030 {
7031 $make_dirs{dirname ($iter)} = 1;
7032 }
7033 }
7034 $make_dirs_set = 1;
7035 }
7036 return defined $make_dirs{$dir};
7037}
7038
7039################################################################
7040
7041# Find the aux dir. This should match the algorithm used by
7042# ./configure. (See the Autoconf documentation for for
7043# AC_CONFIG_AUX_DIR.)
7044sub locate_aux_dir ()
7045{
7046 if (! $config_aux_dir_set_in_configure_ac)
7047 {
7048 # The default auxiliary directory is the first
7049 # of ., .., or ../.. that contains install-sh.
7050 # Assume . if install-sh doesn't exist yet.
7051 for my $dir (qw (. .. ../..))
7052 {
7053 if (-f "$dir/install-sh")
7054 {
7055 $config_aux_dir = $dir;
7056 last;
7057 }
7058 }
7059 $config_aux_dir = '.' unless $config_aux_dir;
7060 }
7061 # Avoid unsightly '/.'s.
7062 $am_config_aux_dir =
7063 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7064 $am_config_aux_dir =~ s,/*$,,;
7065}
7066
7067
7068# &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7069# --------------------------------------------------
7070# See if we want to push this file onto dist_common. This function
7071# encodes the rules for deciding when to do so.
7072sub maybe_push_required_file
7073{
7074 my ($dir, $file, $fullfile) = @_;
7075
7076 if ($dir eq $relative_dir)
7077 {
7078 push_dist_common ($file);
7079 return 1;
7080 }
7081 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7082 {
7083 # If we are doing the topmost directory, and the file is in a
7084 # subdir which does not have a Makefile, then we distribute it
7085 # here.
7086
7087 # If a required file is above the source tree, it is important
7088 # to prefix it with `$(srcdir)' so that no VPATH search is
7089 # performed. Otherwise problems occur with Make implementations
7090 # that rewrite and simplify rules whose dependencies are found in a
7091 # VPATH location. Here is an example with OSF1/Tru64 Make.
7092 #
7093 # % cat Makefile
7094 # VPATH = sub
7095 # distdir: ../a
7096 # echo ../a
7097 # % ls
7098 # Makefile a
7099 # % make
7100 # echo a
7101 # a
7102 #
7103 # Dependency `../a' was found in `sub/../a', but this make
7104 # implementation simplified it as `a'. (Note that the sub/
7105 # directory does not even exist.)
7106 #
7107 # This kind of VPATH rewriting seems hard to cancel. The
7108 # distdir.am hack against VPATH rewriting works only when no
7109 # simplification is done, i.e., for dependencies which are in
7110 # subdirectories, not in enclosing directories. Hence, in
7111 # the latter case we use a full path to make sure no VPATH
7112 # search occurs.
7113 $fullfile = '$(srcdir)/' . $fullfile
7114 if $dir =~ m,^\.\.(?:$|/),;
7115
7116 push_dist_common ($fullfile);
7117 return 1;
7118 }
7119 return 0;
7120}
7121
7122
7123# If a file name appears as a key in this hash, then it has already
7124# been checked for. This allows us not to report the same error more
7125# than once.
7126my %required_file_not_found = ();
7127
7128# &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7129# --------------------------------------------------------------
7130# Verify that the file must exist in $DIRECTORY, or install it.
7131# $MYSTRICT is the strictness level at which this file becomes required.
7132sub require_file_internal ($$$@)
7133{
7134 my ($where, $mystrict, $dir, @files) = @_;
7135
7136 foreach my $file (@files)
7137 {
7138 my $fullfile = "$dir/$file";
7139 my $found_it = 0;
7140 my $dangling_sym = 0;
7141
7142 if (-l $fullfile && ! -f $fullfile)
7143 {
7144 $dangling_sym = 1;
7145 }
7146 elsif (dir_has_case_matching_file ($dir, $file))
7147 {
7148 $found_it = 1;
7149 maybe_push_required_file ($dir, $file, $fullfile);
7150 }
7151
7152 # `--force-missing' only has an effect if `--add-missing' is
7153 # specified.
7154 if ($found_it && (! $add_missing || ! $force_missing))
7155 {
7156 next;
7157 }
7158 else
7159 {
7160 # If we've already looked for it, we're done. You might
7161 # wonder why we don't do this before searching for the
7162 # file. If we do that, then something like
7163 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7164 # DIST_COMMON.
7165 if (! $found_it)
7166 {
7167 next if defined $required_file_not_found{$fullfile};
7168 $required_file_not_found{$fullfile} = 1;
7169 }
7170
7171 if ($strictness >= $mystrict)
7172 {
7173 if ($dangling_sym && $add_missing)
7174 {
7175 unlink ($fullfile);
7176 }
7177
7178 my $trailer = '';
7179 my $suppress = 0;
7180
7181 # Only install missing files according to our desired
7182 # strictness level.
7183 my $message = "required file `$fullfile' not found";
7184 if ($add_missing)
7185 {
7186 if (-f "$libdir/$file")
7187 {
7188 $suppress = 1;
7189
7190 # Install the missing file. Symlink if we
7191 # can, copy if we must. Note: delete the file
7192 # first, in case it is a dangling symlink.
7193 $message = "installing `$fullfile'";
7194 # Windows Perl will hang if we try to delete a
7195 # file that doesn't exist.
7196 unlink ($fullfile) if -f $fullfile;
7197 if ($symlink_exists && ! $copy_missing)
7198 {
7199 if (! symlink ("$libdir/$file", $fullfile))
7200 {
7201 $suppress = 0;
7202 $trailer = "; error while making link: $!";
7203 }
7204 }
7205 elsif (system ('cp', "$libdir/$file", $fullfile))
7206 {
7207 $suppress = 0;
7208 $trailer = "\n error while copying";
7209 }
7210 reset_dir_cache ($dir);
7211 }
7212
7213 if (! maybe_push_required_file (dirname ($fullfile),
7214 $file, $fullfile))
7215 {
7216 if (! $found_it && ! $automake_will_process_aux_dir)
7217 {
7218 # We have added the file but could not push it
7219 # into DIST_COMMON, probably because this is
7220 # an auxiliary file and we are not processing
7221 # the top level Makefile. Furthermore Automake
7222 # hasn't been asked to create the Makefile.in
7223 # that distribute the aux dir files.
7224 error ($where, 'Please make a full run of automake'
7225 . " so $fullfile gets distributed.");
7226 }
7227 }
7228 }
7229 else
7230 {
7231 $trailer = "\n `automake --add-missing' can install `$file'"
7232 if -f "$libdir/$file";
7233 }
7234
7235 # If --force-missing was specified, and we have
7236 # actually found the file, then do nothing.
7237 next
7238 if $found_it && $force_missing;
7239
7240 # If we couldn't install the file, but it is a target in
7241 # the Makefile, don't print anything. This allows files
7242 # like README, AUTHORS, or THANKS to be generated.
7243 next
7244 if !$suppress && rule $file;
7245
7246 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7247 }
7248 }
7249 }
7250}
7251
7252# &require_file ($WHERE, $MYSTRICT, @FILES)
7253# -----------------------------------------
7254sub require_file ($$@)
7255{
7256 my ($where, $mystrict, @files) = @_;
7257 require_file_internal ($where, $mystrict, $relative_dir, @files);
7258}
7259
7260# &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7261# -----------------------------------------------------------
7262sub require_file_with_macro ($$$@)
7263{
7264 my ($cond, $macro, $mystrict, @files) = @_;
7265 $macro = rvar ($macro) unless ref $macro;
7266 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7267}
7268
7269# &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7270# ----------------------------------------------------------------
7271# Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7272# must be in that directory. Otherwise expect it in the current directory.
7273sub require_libsource_with_macro ($$$@)
7274{
7275 my ($cond, $macro, $mystrict, @files) = @_;
7276 $macro = rvar ($macro) unless ref $macro;
7277 if ($config_libobj_dir)
7278 {
7279 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7280 $config_libobj_dir, @files);
7281 }
7282 else
7283 {
7284 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7285 }
7286}
7287
7288# &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7289# ----------------------------------------------
7290# Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7291sub require_conf_file ($$@)
7292{
7293 my ($where, $mystrict, @files) = @_;
7294 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7295}
7296
7297
7298# &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7299# ----------------------------------------------------------------
7300sub require_conf_file_with_macro ($$$@)
7301{
7302 my ($cond, $macro, $mystrict, @files) = @_;
7303 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7304 $mystrict, @files);
7305}
7306
7307################################################################
7308
7309# &require_build_directory ($DIRECTORY)
7310# ------------------------------------
7311# Emit rules to create $DIRECTORY if needed, and return
7312# the file that any target requiring this directory should be made
7313# dependent upon.
7314# We don't want to emit the rule twice, and want to reuse it
7315# for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7316sub require_build_directory ($)
7317{
7318 my $directory = shift;
7319
7320 return $directory_map{$directory} if exists $directory_map{$directory};
7321
7322 my $cdir = File::Spec->canonpath ($directory);
7323
7324 if (exists $directory_map{$cdir})
7325 {
7326 my $stamp = $directory_map{$cdir};
7327 $directory_map{$directory} = $stamp;
7328 return $stamp;
7329 }
7330
7331 my $dirstamp = "$cdir/\$(am__dirstamp)";
7332
7333 $directory_map{$directory} = $dirstamp;
7334 $directory_map{$cdir} = $dirstamp;
7335
7336 # Set a variable for the dirstamp basename.
7337 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7338 '$(am__leading_dot)dirstamp');
7339
7340 # Directory must be removed by `make distclean'.
7341 $clean_files{$dirstamp} = DIST_CLEAN;
7342
7343 $output_rules .= ("$dirstamp:\n"
7344 . "\t\@\$(MKDIR_P) $directory\n"
7345 . "\t\@: > $dirstamp\n");
7346
7347 return $dirstamp;
7348}
7349
7350# &require_build_directory_maybe ($FILE)
7351# --------------------------------------
7352# If $FILE lies in a subdirectory, emit a rule to create this
7353# directory and return the file that $FILE should be made
7354# dependent upon. Otherwise, just return the empty string.
7355sub require_build_directory_maybe ($)
7356{
7357 my $file = shift;
7358 my $directory = dirname ($file);
7359
7360 if ($directory ne '.')
7361 {
7362 return require_build_directory ($directory);
7363 }
7364 else
7365 {
7366 return '';
7367 }
7368}
7369
7370################################################################
7371
7372# Push a list of files onto dist_common.
7373sub push_dist_common
7374{
7375 prog_error "push_dist_common run after handle_dist"
7376 if $handle_dist_run;
7377 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7378 '', INTERNAL, VAR_PRETTY);
7379}
7380
7381
7382################################################################
7383
7384# generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7385# ----------------------------------------------
7386# Generate a Makefile.in given the name of the corresponding Makefile and
7387# the name of the file output by config.status.
7388sub generate_makefile ($$)
7389{
7390 my ($makefile_am, $makefile_in) = @_;
7391
7392 # Reset all the Makefile.am related variables.
7393 initialize_per_input;
7394
7395 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7396 # warnings for this file. So hold any warning issued before
7397 # we have processed AUTOMAKE_OPTIONS.
7398 buffer_messages ('warning');
7399
7400 # Name of input file ("Makefile.am") and output file
7401 # ("Makefile.in"). These have no directory components.
7402 $am_file_name = basename ($makefile_am);
7403 $in_file_name = basename ($makefile_in);
7404
7405 # $OUTPUT is encoded. If it contains a ":" then the first element
7406 # is the real output file, and all remaining elements are input
7407 # files. We don't scan or otherwise deal with these input files,
7408 # other than to mark them as dependencies. See
7409 # &scan_autoconf_files for details.
7410 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7411
7412 $relative_dir = dirname ($makefile);
7413 $am_relative_dir = dirname ($makefile_am);
7414 $topsrcdir = backname ($relative_dir);
7415
7416 read_main_am_file ($makefile_am);
7417 if (handle_options)
7418 {
7419 # Process buffered warnings.
7420 flush_messages;
7421 # Fatal error. Just return, so we can continue with next file.
7422 return;
7423 }
7424 # Process buffered warnings.
7425 flush_messages;
7426
7427 # There are a few install-related variables that you should not define.
7428 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7429 {
7430 my $v = var $var;
7431 if ($v)
7432 {
7433 my $def = $v->def (TRUE);
7434 prog_error "$var not defined in condition TRUE"
7435 unless $def;
7436 reject_var $var, "`$var' should not be defined"
7437 if $def->owner != VAR_AUTOMAKE;
7438 }
7439 }
7440
7441 # Catch some obsolete variables.
7442 msg_var ('obsolete', 'INCLUDES',
7443 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7444 if var ('INCLUDES');
7445
7446 # Must do this after reading .am file.
7447 define_variable ('subdir', $relative_dir, INTERNAL);
7448
7449 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7450 # recursive rules are enabled.
7451 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7452 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7453
7454 # Check first, because we might modify some state.
7455 check_cygnus;
7456 check_gnu_standards;
7457 check_gnits_standards;
7458
7459 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7460 handle_gettext;
7461 handle_libraries;
7462 handle_ltlibraries;
7463 handle_programs;
7464 handle_scripts;
7465
7466 # These must be run after all the sources are scanned. They
7467 # use variables defined by &handle_libraries, &handle_ltlibraries,
7468 # or &handle_programs.
7469 handle_compile;
7470 handle_languages;
7471 handle_libtool;
7472
7473 # Variables used by distdir.am and tags.am.
7474 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7475 if (! option 'no-dist')
7476 {
7477 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7478 }
7479
7480 handle_multilib;
7481 handle_texinfo;
7482 handle_emacs_lisp;
7483 handle_python;
7484 handle_java;
7485 handle_man_pages;
7486 handle_data;
7487 handle_headers;
7488 handle_subdirs;
7489 handle_tags;
7490 handle_minor_options;
7491 # Must come after handle_programs so that %known_programs is up-to-date.
7492 handle_tests;
7493
7494 # This must come after most other rules.
7495 handle_dist;
7496
7497 handle_footer;
7498 do_check_merge_target;
7499 handle_all ($makefile);
7500
7501 # FIXME: Gross!
7502 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7503 {
7504 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7505 }
7506
7507 handle_install;
7508 handle_clean ($makefile);
7509 handle_factored_dependencies;
7510
7511 # Comes last, because all the above procedures may have
7512 # defined or overridden variables.
7513 $output_vars .= output_variables;
7514
7515 check_typos;
7516
7517 my ($out_file) = $output_directory . '/' . $makefile_in;
7518
7519 if ($exit_code != 0)
7520 {
7521 verb "not writing $out_file because of earlier errors";
7522 return;
7523 }
7524
7525 if (! -d ($output_directory . '/' . $am_relative_dir))
7526 {
7527 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7528 }
7529
7530 # We make sure that `all:' is the first target.
7531 my $output =
7532 "$output_vars$output_all$output_header$output_rules$output_trailer";
7533
7534 # Decide whether we must update the output file or not.
7535 # We have to update in the following situations.
7536 # * $force_generation is set.
7537 # * any of the output dependencies is younger than the output
7538 # * the contents of the output is different (this can happen
7539 # if the project has been populated with a file listed in
7540 # @common_files since the last run).
7541 # Output's dependencies are split in two sets:
7542 # * dependencies which are also configure dependencies
7543 # These do not change between each Makefile.am
7544 # * other dependencies, specific to the Makefile.am being processed
7545 # (such as the Makefile.am itself, or any Makefile fragment
7546 # it includes).
7547 my $timestamp = mtime $out_file;
7548 if (! $force_generation
7549 && $configure_deps_greatest_timestamp < $timestamp
7550 && $output_deps_greatest_timestamp < $timestamp
7551 && $output eq contents ($out_file))
7552 {
7553 verb "$out_file unchanged";
7554 # No need to update.
7555 return;
7556 }
7557
7558 if (-e $out_file)
7559 {
7560 unlink ($out_file)
7561 or fatal "cannot remove $out_file: $!\n";
7562 }
7563
7564 my $gm_file = new Automake::XFile "> $out_file";
7565 verb "creating $out_file";
7566 print $gm_file $output;
7567}
7568
7569################################################################
7570
7571
7572
7573
7574################################################################
7575
7576# Print usage information.
7577sub usage ()
7578{
7579 print "Usage: $0 [OPTION] ... [Makefile]...
7580
7581Generate Makefile.in for configure from Makefile.am.
7582
7583Operation modes:
7584 --help print this help, then exit
7585 --version print version number, then exit
7586 -v, --verbose verbosely list files processed
7587 --no-force only update Makefile.in's that are out of date
7588 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7589
7590Dependency tracking:
7591 -i, --ignore-deps disable dependency tracking code
7592 --include-deps enable dependency tracking code
7593
7594Flavors:
7595 --cygnus assume program is part of Cygnus-style tree
7596 --foreign set strictness to foreign
7597 --gnits set strictness to gnits
7598 --gnu set strictness to gnu
7599
7600Library files:
7601 -a, --add-missing add missing standard files to package
7602 --libdir=DIR directory storing library files
7603 -c, --copy with -a, copy missing files (default is symlink)
7604 -f, --force-missing force update of standard files
7605
7606";
7607 Automake::ChannelDefs::usage;
7608
7609 my ($last, @lcomm);
7610 $last = '';
7611 foreach my $iter (sort ((@common_files, @common_sometimes)))
7612 {
7613 push (@lcomm, $iter) unless $iter eq $last;
7614 $last = $iter;
7615 }
7616
7617 my @four;
7618 print "\nFiles which are automatically distributed, if found:\n";
7619 format USAGE_FORMAT =
7620 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7621 $four[0], $four[1], $four[2], $four[3]
7622.
7623 $~ = "USAGE_FORMAT";
7624
7625 my $cols = 4;
7626 my $rows = int(@lcomm / $cols);
7627 my $rest = @lcomm % $cols;
7628
7629 if ($rest)
7630 {
7631 $rows++;
7632 }
7633 else
7634 {
7635 $rest = $cols;
7636 }
7637
7638 for (my $y = 0; $y < $rows; $y++)
7639 {
7640 @four = ("", "", "", "");
7641 for (my $x = 0; $x < $cols; $x++)
7642 {
7643 last if $y + 1 == $rows && $x == $rest;
7644
7645 my $idx = (($x > $rest)
7646 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7647 : ($rows * $x));
7648
7649 $idx += $y;
7650 $four[$x] = $lcomm[$idx];
7651 }
7652 write;
7653 }
7654
7655 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7656
7657 # --help always returns 0 per GNU standards.
7658 exit 0;
7659}
7660
7661
7662# &version ()
7663# -----------
7664# Print version information
7665sub version ()
7666{
7667 print <<EOF;
7668automake (GNU $PACKAGE) $VERSION
7669Written by Tom Tromey <tromey\@redhat.com>
7670 and Alexandre Duret-Lutz <adl\@gnu.org>.
7671
7672Copyright 2006 Free Software Foundation, Inc.
7673This is free software; see the source for copying conditions. There is NO
7674warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7675EOF
7676 # --version always returns 0 per GNU standards.
7677 exit 0;
7678}
7679
7680################################################################
7681
7682# Parse command line.
7683sub parse_arguments ()
7684{
7685 # Start off as gnu.
7686 set_strictness ('gnu');
7687
7688 my $cli_where = new Automake::Location;
7689 my %cli_options =
7690 (
7691 'libdir=s' => \$libdir,
7692 'gnu' => sub { set_strictness ('gnu'); },
7693 'gnits' => sub { set_strictness ('gnits'); },
7694 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7695 'foreign' => sub { set_strictness ('foreign'); },
7696 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7697 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7698 $cli_where); },
7699 'no-force' => sub { $force_generation = 0; },
7700 'f|force-missing' => \$force_missing,
7701 'o|output-dir=s' => \$output_directory,
7702 'a|add-missing' => \$add_missing,
7703 'c|copy' => \$copy_missing,
7704 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7705 'W|warnings=s' => \&parse_warnings,
7706 # These long options (--Werror and --Wno-error) for backward
7707 # compatibility. Use -Werror and -Wno-error today.
7708 'Werror' => sub { parse_warnings 'W', 'error'; },
7709 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7710 );
7711 use Getopt::Long;
7712 Getopt::Long::config ("bundling", "pass_through");
7713
7714 # See if --version or --help is used. We want to process these before
7715 # anything else because the GNU Coding Standards require us to
7716 # `exit 0' after processing these options, and we can't guarantee this
7717 # if we treat other options first. (Handling other options first
7718 # could produce error diagnostics, and in this condition it is
7719 # confusing if Automake does `exit 0'.)
7720 my %cli_options_1st_pass =
7721 (
7722 'version' => \&version,
7723 'help' => \&usage,
7724 # Recognize all other options (and their arguments) but do nothing.
7725 map { $_ => sub {} } (keys %cli_options)
7726 );
7727 my @ARGV_backup = @ARGV;
7728 Getopt::Long::GetOptions %cli_options_1st_pass
7729 or exit 1;
7730 @ARGV = @ARGV_backup;
7731
7732 # Now *really* process the options. This time we know that --help
7733 # and --version are not present, but we specify them nonetheless so
7734 # that ambiguous abbreviation are diagnosed.
7735 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7736 or exit 1;
7737
7738 if (defined $output_directory)
7739 {
7740 msg 'obsolete', "`--output-dir' is deprecated\n";
7741 }
7742 else
7743 {
7744 # In the next release we'll remove this entirely.
7745 $output_directory = '.';
7746 }
7747
7748 return unless @ARGV;
7749
7750 if ($ARGV[0] =~ /^-./)
7751 {
7752 my %argopts;
7753 for my $k (keys %cli_options)
7754 {
7755 if ($k =~ /(.*)=s$/)
7756 {
7757 map { $argopts{(length ($_) == 1)
7758 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7759 }
7760 }
7761 if ($ARGV[0] eq '--')
7762 {
7763 shift @ARGV;
7764 }
7765 elsif (exists $argopts{$ARGV[0]})
7766 {
7767 fatal ("option `$ARGV[0]' requires an argument\n"
7768 . "Try `$0 --help' for more information.");
7769 }
7770 else
7771 {
7772 fatal ("unrecognized option `$ARGV[0]'.\n"
7773 . "Try `$0 --help' for more information.");
7774 }
7775 }
7776
7777 my $errspec = 0;
7778 foreach my $arg (@ARGV)
7779 {
7780 fatal ("empty argument\nTry `$0 --help' for more information.")
7781 if ($arg eq '');
7782
7783 # Handle $local:$input syntax.
7784 my ($local, @rest) = split (/:/, $arg);
7785 @rest = ("$local.in",) unless @rest;
7786 my $input = locate_am @rest;
7787 if ($input)
7788 {
7789 push @input_files, $input;
7790 $output_files{$input} = join (':', ($local, @rest));
7791 }
7792 else
7793 {
7794 error "no Automake input file found for `$arg'";
7795 $errspec = 1;
7796 }
7797 }
7798 fatal "no input file found among supplied arguments"
7799 if $errspec && ! @input_files;
7800}
7801
7802################################################################
7803
7804# Parse the WARNINGS environment variable.
7805parse_WARNINGS;
7806
7807# Parse command line.
7808parse_arguments;
7809
7810$configure_ac = require_configure_ac;
7811
7812# Do configure.ac scan only once.
7813scan_autoconf_files;
7814
7815if (! @input_files)
7816 {
7817 my $msg = '';
7818 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7819 if -f 'Makefile.am';
7820 fatal ("no `Makefile.am' found for any configure output$msg");
7821 }
7822
7823# Now do all the work on each file.
7824foreach my $file (@input_files)
7825 {
7826 ($am_file = $file) =~ s/\.in$//;
7827 if (! -f ($am_file . '.am'))
7828 {
7829 error "`$am_file.am' does not exist";
7830 }
7831 else
7832 {
7833 # Any warning setting now local to this Makefile.am.
7834 dup_channel_setup;
7835
7836 generate_makefile ($am_file . '.am', $file);
7837
7838 # Back out any warning setting.
7839 drop_channel_setup;
7840 }
7841 }
7842
7843exit $exit_code;
7844
7845
7846### Setup "GNU" style for perl-mode and cperl-mode.
7847## Local Variables:
7848## perl-indent-level: 2
7849## perl-continued-statement-offset: 2
7850## perl-continued-brace-offset: 0
7851## perl-brace-offset: 0
7852## perl-brace-imaginary-offset: 0
7853## perl-label-offset: -2
7854## cperl-indent-level: 2
7855## cperl-brace-offset: 0
7856## cperl-continued-brace-offset: 0
7857## cperl-label-offset: -2
7858## cperl-extra-newline-before-brace: t
7859## cperl-merge-trailing-else: nil
7860## cperl-continued-statement-offset: 2
7861## End:
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