source: trunk/essentials/sys-devel/automake-1.8/automake.in@ 3252

Last change on this file since 3252 was 3142, checked in by bird, 18 years ago

Unixroot.

File size: 206.3 KB
Line 
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 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., 59 Temple Place - Suite 330, Boston, MA
25# 02111-1307, USA.
26
27# Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28# Perl reimplementation by Tom Tromey <tromey@redhat.com>.
29
30package Language;
31
32BEGIN
33{
34 my $perllibdir = $ENV{'perllibdir'} || $ENV{'UNIXROOT'}.'@datadir@/@PACKAGE@-@APIVERSION@';
35 $perllibdir =~ s/$ENV{'UNIXROOT'}\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
36 $perllibdir =~ s/\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
37 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
38
39 # Override SHELL. This is required on DJGPP so that system() uses
40 # bash, not COMMAND.COM which doesn't quote arguments properly.
41 # Other systems aren't expected to use $SHELL when Automake
42 # runs, but it should be safe to drop the `if DJGPP' guard if
43 # it turns up other systems need the same thing. After all,
44 # if SHELL is used, ./configure's SHELL is always better than
45 # the user's SHELL (which may be something like tcsh).
46 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
47}
48
49use Automake::Struct;
50struct (# Short name of the language (c, f77...).
51 'name' => "\$",
52 # Nice name of the language (C, Fortran 77...).
53 'Name' => "\$",
54
55 # List of configure variables which must be defined.
56 'config_vars' => '@',
57
58 'ansi' => "\$",
59 # `pure' is `1' or `'. A `pure' language is one where, if
60 # all the files in a directory are of that language, then we
61 # do not require the C compiler or any code to call it.
62 'pure' => "\$",
63
64 'autodep' => "\$",
65
66 # Name of the compiling variable (COMPILE).
67 'compiler' => "\$",
68 # Content of the compiling variable.
69 'compile' => "\$",
70 # Flag to require compilation without linking (-c).
71 'compile_flag' => "\$",
72 'extensions' => '@',
73 # A subroutine to compute a list of possible extensions of
74 # the product given the input extensions.
75 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
76 'output_extensions' => "\$",
77 # A list of flag variables used in 'compile'.
78 # (defaults to [])
79 'flags' => "@",
80
81 # The file to use when generating rules for this language.
82 # The default is 'depend2'.
83 'rule_file' => "\$",
84
85 # Name of the linking variable (LINK).
86 'linker' => "\$",
87 # Content of the linking variable.
88 'link' => "\$",
89
90 # Name of the linker variable (LD).
91 'lder' => "\$",
92 # Content of the linker variable ($(CC)).
93 'ld' => "\$",
94
95 # Flag to specify the output file (-o).
96 'output_flag' => "\$",
97 '_finish' => "\$",
98
99 # This is a subroutine which is called whenever we finally
100 # determine the context in which a source file will be
101 # compiled.
102 '_target_hook' => "\$");
103
104
105sub finish ($)
106{
107 my ($self) = @_;
108 if (defined $self->_finish)
109 {
110 &{$self->_finish} ();
111 }
112}
113
114sub target_hook ($$$$)
115{
116 my ($self) = @_;
117 if (defined $self->_target_hook)
118 {
119 &{$self->_target_hook} (@_);
120 }
121}
122
123package Automake;
124
125use strict;
126use Automake::Config;
127use Automake::General;
128use Automake::XFile;
129use Automake::Channels;
130use Automake::ChannelDefs;
131use Automake::Configure_ac;
132use Automake::FileUtils;
133use Automake::Location;
134use Automake::Condition qw/TRUE FALSE/;
135use Automake::DisjConditions;
136use Automake::Options;
137use Automake::Version;
138use Automake::Variable;
139use Automake::VarDef;
140use Automake::Rule;
141use Automake::RuleDef;
142use Automake::Wrap 'makefile_wrap';
143use File::Basename;
144use Carp;
145
146## ----------- ##
147## Constants. ##
148## ----------- ##
149
150# Some regular expressions. One reason to put them here is that it
151# makes indentation work better in Emacs.
152
153# Writing singled-quoted-$-terminated regexes is a pain because
154# perl-mode thinks of $' as the ${'} variable (instead of a $ followed
155# by a closing quote. Letting perl-mode think the quote is not closed
156# leads to all sort of misindentations. On the other hand, defining
157# regexes as double-quoted strings is far less readable. So usually
158# we will write:
159#
160# $REGEX = '^regex_value' . "\$";
161
162my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
163my $WHITE_PATTERN = '^\s*' . "\$";
164my $COMMENT_PATTERN = '^#';
165my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
166# A rule has three parts: a list of targets, a list of dependencies,
167# and optionally actions.
168my $RULE_PATTERN =
169 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
170
171# Only recognize leading spaces, not leading tabs. If we recognize
172# leading tabs here then we need to make the reader smarter, because
173# otherwise it will think rules like `foo=bar; \' are errors.
174my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
175# This pattern recognizes a Gnits version id and sets $1 if the
176# release is an alpha release. We also allow a suffix which can be
177# used to extend the version number with a "fork" identifier.
178my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
179
180my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
181my $ELSE_PATTERN =
182 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
183my $ENDIF_PATTERN =
184 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
185my $PATH_PATTERN = '(\w|[/.-])+';
186# This will pass through anything not of the prescribed form.
187my $INCLUDE_PATTERN = ('^include\s+'
188 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
189 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
190 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
191
192# Match `-d' as a command-line argument in a string.
193my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
194# Directories installed during 'install-exec' phase.
195my $EXEC_DIR_PATTERN =
196 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
197
198# Values for AC_CANONICAL_*
199use constant AC_CANONICAL_HOST => 1;
200use constant AC_CANONICAL_SYSTEM => 2;
201
202# Values indicating when something should be cleaned.
203use constant MOSTLY_CLEAN => 0;
204use constant CLEAN => 1;
205use constant DIST_CLEAN => 2;
206use constant MAINTAINER_CLEAN => 3;
207
208# Libtool files.
209my @libtool_files = qw(ltmain.sh config.guess config.sub);
210# ltconfig appears here for compatibility with old versions of libtool.
211my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
212
213# Commonly found files we look for and automatically include in
214# DISTFILES.
215my @common_files =
216 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
217 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
218 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
219 depcomp elisp-comp install-sh libversion.in mdate-sh missing
220 mkinstalldirs py-compile texinfo.tex ylwrap),
221 @libtool_files, @libtool_sometimes);
222
223# Commonly used files we auto-include, but only sometimes. This list
224# is used for the --help output only.
225my @common_sometimes =
226 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
227 configure.ac configure.in stamp-vti);
228
229# Standard directories from the GNU Coding Standards, and additional
230# pkg* directories from Automake. Stored in a hash for fast member check.
231my %standard_prefix =
232 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
233 localstate man man1 man2 man3 man4 man5 man6
234 man7 man8 man9 oldinclude pkgdatadir
235 pkgincludedir pkglibdir sbin sharedstate
236 sysconf));
237
238# Copyright on generated Makefile.ins.
239my $gen_copyright = "\
240# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
241# 2003, 2004 Free Software Foundation, Inc.
242# This Makefile.in is free software; the Free Software Foundation
243# gives unlimited permission to copy and/or distribute it,
244# with or without modifications, as long as this notice is preserved.
245
246# This program is distributed in the hope that it will be useful,
247# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
248# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
249# PARTICULAR PURPOSE.
250";
251
252# These constants are returned by lang_*_rewrite functions.
253# LANG_SUBDIR means that the resulting object file should be in a
254# subdir if the source file is. In this case the file name cannot
255# have `..' components.
256use constant LANG_IGNORE => 0;
257use constant LANG_PROCESS => 1;
258use constant LANG_SUBDIR => 2;
259
260# These are used when keeping track of whether an object can be built
261# by two different paths.
262use constant COMPILE_LIBTOOL => 1;
263use constant COMPILE_ORDINARY => 2;
264
265# We can't always associate a location to a variable or a rule,
266# when its defined by Automake. We use INTERNAL in this case.
267use constant INTERNAL => new Automake::Location;
268
269
270
271## ---------------------------------- ##
272## Variables related to the options. ##
273## ---------------------------------- ##
274
275# TRUE if we should always generate Makefile.in.
276my $force_generation = 1;
277
278# From the Perl manual.
279my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
280
281# TRUE if missing standard files should be installed.
282my $add_missing = 0;
283
284# TRUE if we should copy missing files; otherwise symlink if possible.
285my $copy_missing = 0;
286
287# TRUE if we should always update files that we know about.
288my $force_missing = 0;
289
290
291## ---------------------------------------- ##
292## Variables filled during files scanning. ##
293## ---------------------------------------- ##
294
295# Name of the configure.ac file.
296my $configure_ac;
297
298# Files found by scanning configure.ac for LIBOBJS.
299my %libsources = ();
300
301# Names used in AC_CONFIG_HEADER call.
302my @config_headers = ();
303
304# Names used in AC_CONFIG_LINKS call.
305my @config_links = ();
306
307# Directory where output files go. Actually, output files are
308# relative to this directory.
309my $output_directory;
310
311# List of Makefile.am's to process, and their corresponding outputs.
312my @input_files = ();
313my %output_files = ();
314
315# Complete list of Makefile.am's that exist.
316my @configure_input_files = ();
317
318# List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
319# and their outputs.
320my @other_input_files = ();
321# Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
322# The keys are the files created by these macros.
323my %ac_config_files_location = ();
324
325# List of directories to search for configure-required files. This
326# can be set by AC_CONFIG_AUX_DIR.
327my @config_aux_path = qw(. .. ../..);
328my $config_aux_dir = '';
329my $config_aux_dir_set_in_configure_in = 0;
330
331# Whether AM_GNU_GETTEXT has been seen in configure.ac.
332my $seen_gettext = 0;
333# Whether AM_GNU_GETTEXT([external]) is used.
334my $seen_gettext_external = 0;
335# Where AM_GNU_GETTEXT appears.
336my $ac_gettext_location;
337
338# TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
339my $seen_canonical = 0;
340my $canonical_location;
341
342# Where AM_MAINTAINER_MODE appears.
343my $seen_maint_mode;
344
345# Actual version we've seen.
346my $package_version = '';
347
348# Where version is defined.
349my $package_version_location;
350
351# TRUE if we've seen AC_ENABLE_MULTILIB.
352my $seen_multilib = 0;
353
354# TRUE if we've seen AM_PROG_CC_C_O
355my $seen_cc_c_o = 0;
356
357# Where AM_INIT_AUTOMAKE is called;
358my $seen_init_automake = 0;
359
360# TRUE if we've seen AM_AUTOMAKE_VERSION.
361my $seen_automake_version = 0;
362
363# Hash table of discovered configure substitutions. Keys are names,
364# values are `FILE:LINE' strings which are used by error message
365# generation.
366my %configure_vars = ();
367
368# Files included by $configure_ac.
369my @configure_deps = ();
370
371# Greatest timestamp of configure's dependencies.
372my $configure_deps_greatest_timestamp = 0;
373
374# Hash table of AM_CONDITIONAL variables seen in configure.
375my %configure_cond = ();
376
377# This maps extensions onto language names.
378my %extension_map = ();
379
380# List of the DIST_COMMON files we discovered while reading
381# configure.in
382my $configure_dist_common = '';
383
384# This maps languages names onto objects.
385my %languages = ();
386
387# List of targets we must always output.
388# FIXME: Complete, and remove falsely required targets.
389my %required_targets =
390 (
391 'all' => 1,
392 'dvi' => 1,
393 'pdf' => 1,
394 'ps' => 1,
395 'info' => 1,
396 'install-info' => 1,
397 'install' => 1,
398 'install-data' => 1,
399 'install-exec' => 1,
400 'uninstall' => 1,
401
402 # FIXME: Not required, temporary hacks.
403 # Well, actually they are sort of required: the -recursive
404 # targets will run them anyway...
405 'dvi-am' => 1,
406 'pdf-am' => 1,
407 'ps-am' => 1,
408 'info-am' => 1,
409 'install-data-am' => 1,
410 'install-exec-am' => 1,
411 'installcheck-am' => 1,
412 'uninstall-am' => 1,
413
414 'install-man' => 1,
415 );
416
417# This is set to 1 when Automake needs to be run again.
418# (For instance, this happens when an auxiliary file such as
419# depcomp is added after the toplevel Makefile.in -- which
420# should distribute depcomp -- has been generated.)
421my $automake_needs_to_reprocess_all_files = 0;
422
423# If a file name appears as a key in this hash, then it has already
424# been checked for. This variable is local to the "require file"
425# functions.
426my %require_file_found = ();
427
428# The name of the Makefile currently being processed.
429my $am_file = 'BUG';
430
431
432
433################################################################
434
435## ------------------------------------------ ##
436## Variables reset by &initialize_per_input. ##
437## ------------------------------------------ ##
438
439# Basename and relative dir of the input file.
440my $am_file_name;
441my $am_relative_dir;
442
443# Same but wrt Makefile.in.
444my $in_file_name;
445my $relative_dir;
446
447# Greatest timestamp of the output's dependencies (excluding
448# configure's dependencies).
449my $output_deps_greatest_timestamp;
450
451# These two variables are used when generating each Makefile.in.
452# They hold the Makefile.in until it is ready to be printed.
453my $output_rules;
454my $output_vars;
455my $output_trailer;
456my $output_all;
457my $output_header;
458
459# This is the conditional stack, updated on if/else/endif, and
460# used to build Condition objects.
461my @cond_stack;
462
463# This holds the set of included files.
464my @include_stack;
465
466# This holds a list of directories which we must create at `dist'
467# time. This is used in some strange scenarios involving weird
468# AC_OUTPUT commands.
469my %dist_dirs;
470
471# List of dependencies for the obvious targets.
472my @all;
473my @check;
474my @check_tests;
475
476# Keys in this hash table are files to delete. The associated
477# value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
478my %clean_files;
479
480# Keys in this hash table are object files or other files in
481# subdirectories which need to be removed. This only holds files
482# which are created by compilations. The value in the hash indicates
483# when the file should be removed.
484my %compile_clean_files;
485
486# Keys in this hash table are directories where we expect to build a
487# libtool object. We use this information to decide what directories
488# to delete.
489my %libtool_clean_directories;
490
491# Value of `$(SOURCES)', used by tags.am.
492my @sources;
493# Sources which go in the distribution.
494my @dist_sources;
495
496# This hash maps object file names onto their corresponding source
497# file names. This is used to ensure that each object is created
498# by a single source file.
499my %object_map;
500
501# This hash maps object file names onto an integer value representing
502# whether this object has been built via ordinary compilation or
503# libtool compilation (the COMPILE_* constants).
504my %object_compilation_map;
505
506
507# This keeps track of the directories for which we've already
508# created dirstamp code.
509my %directory_map;
510
511# All .P files.
512my %dep_files;
513
514# This is a list of all targets to run during "make dist".
515my @dist_targets;
516
517# Keys in this hash are the basenames of files which must depend on
518# ansi2knr. Values are either the empty string, or the directory in
519# which the ANSI source file appears; the directory must have a
520# trailing `/'.
521my %de_ansi_files;
522
523# This is the name of the redirect `all' target to use.
524my $all_target;
525
526# This keeps track of which extensions we've seen (that we care
527# about).
528my %extension_seen;
529
530# This is random scratch space for the language finish functions.
531# Don't randomly overwrite it; examine other uses of keys first.
532my %language_scratch;
533
534# We keep track of which objects need special (per-executable)
535# handling on a per-language basis.
536my %lang_specific_files;
537
538# This is set when `handle_dist' has finished. Once this happens,
539# we should no longer push on dist_common.
540my $handle_dist_run;
541
542# Used to store a set of linkers needed to generate the sources currently
543# under consideration.
544my %linkers_used;
545
546# True if we need `LINK' defined. This is a hack.
547my $need_link;
548
549# Was get_object_extension run?
550# FIXME: This is a hack. a better switch should be found.
551my $get_object_extension_was_run;
552
553################################################################
554
555# var_SUFFIXES_trigger ($TYPE, $VALUE)
556# ------------------------------------
557# This is called by Automake::Variable::define() when SUFFIXES
558# is defined ($TYPE eq '') or appended ($TYPE eq '+').
559# The work here needs to be performed as a side-effect of the
560# macro_define() call because SUFFIXES definitions impact
561# on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
562# the input am file.
563sub var_SUFFIXES_trigger ($$)
564{
565 my ($type, $value) = @_;
566 accept_extensions (split (' ', $value));
567}
568Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
569
570################################################################
571
572## --------------------------------- ##
573## Forward subroutine declarations. ##
574## --------------------------------- ##
575sub register_language (%);
576sub file_contents_internal ($$$%);
577sub define_files_variable ($\@$$);
578
579
580# &initialize_per_input ()
581# ------------------------
582# (Re)-Initialize per-Makefile.am variables.
583sub initialize_per_input ()
584{
585 reset_local_duplicates ();
586
587 $am_file_name = '';
588 $am_relative_dir = '';
589
590 $in_file_name = '';
591 $relative_dir = '';
592
593 $output_deps_greatest_timestamp = 0;
594
595 $output_rules = '';
596 $output_vars = '';
597 $output_trailer = '';
598 $output_all = '';
599 $output_header = '';
600
601 Automake::Options::reset;
602 Automake::Variable::reset;
603 Automake::Rule::reset;
604
605 @cond_stack = ();
606
607 @include_stack = ();
608
609 %dist_dirs = ();
610
611 @all = ();
612 @check = ();
613 @check_tests = ();
614
615 %clean_files = ();
616
617 @sources = ();
618 @dist_sources = ();
619
620 %object_map = ();
621 %object_compilation_map = ();
622
623 %directory_map = ();
624
625 %dep_files = ();
626
627 @dist_targets = ();
628
629 %de_ansi_files = ();
630
631 $all_target = '';
632
633 %extension_seen = ();
634
635 %language_scratch = ();
636
637 %lang_specific_files = ();
638
639 $handle_dist_run = 0;
640
641 $need_link = 0;
642
643 $get_object_extension_was_run = 0;
644
645 %compile_clean_files = ();
646
647 # We always include `.'. This isn't strictly correct.
648 %libtool_clean_directories = ('.' => 1);
649}
650
651
652################################################################
653
654# Initialize our list of languages that are internally supported.
655
656# C.
657register_language ('name' => 'c',
658 'Name' => 'C',
659 'config_vars' => ['CC'],
660 'ansi' => 1,
661 'autodep' => '',
662 'flags' => ['CFLAGS', 'CPPFLAGS'],
663 'compiler' => 'COMPILE',
664 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
665 'lder' => 'CCLD',
666 'ld' => '$(CC)',
667 'linker' => 'LINK',
668 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
669 'compile_flag' => '-c',
670 'extensions' => ['.c'],
671 '_finish' => \&lang_c_finish);
672
673# C++.
674register_language ('name' => 'cxx',
675 'Name' => 'C++',
676 'config_vars' => ['CXX'],
677 'linker' => 'CXXLINK',
678 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
679 'autodep' => 'CXX',
680 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
681 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
682 'compiler' => 'CXXCOMPILE',
683 'compile_flag' => '-c',
684 'output_flag' => '-o',
685 'lder' => 'CXXLD',
686 'ld' => '$(CXX)',
687 'pure' => 1,
688 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
689
690# Objective C.
691register_language ('name' => 'objc',
692 'Name' => 'Objective C',
693 'config_vars' => ['OBJC'],
694 'linker' => 'OBJCLINK',,
695 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
696 'autodep' => 'OBJC',
697 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
698 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
699 'compiler' => 'OBJCCOMPILE',
700 'compile_flag' => '-c',
701 'output_flag' => '-o',
702 'lder' => 'OBJCLD',
703 'ld' => '$(OBJC)',
704 'pure' => 1,
705 'extensions' => ['.m']);
706
707# Headers.
708register_language ('name' => 'header',
709 'Name' => 'Header',
710 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
711 '.hpp', '.inc'],
712 # No output.
713 'output_extensions' => sub { return () },
714 # Nothing to do.
715 '_finish' => sub { });
716
717# Yacc (C & C++).
718register_language ('name' => 'yacc',
719 'Name' => 'Yacc',
720 'config_vars' => ['YACC'],
721 'flags' => ['YFLAGS'],
722 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
723 'compiler' => 'YACCCOMPILE',
724 'extensions' => ['.y'],
725 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
726 return ($ext,) },
727 'rule_file' => 'yacc',
728 '_finish' => \&lang_yacc_finish,
729 '_target_hook' => \&lang_yacc_target_hook);
730register_language ('name' => 'yaccxx',
731 'Name' => 'Yacc (C++)',
732 'config_vars' => ['YACC'],
733 'rule_file' => 'yacc',
734 'flags' => ['YFLAGS'],
735 'compiler' => 'YACCCOMPILE',
736 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
737 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
738 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
739 return ($ext,) },
740 '_finish' => \&lang_yacc_finish,
741 '_target_hook' => \&lang_yacc_target_hook);
742
743# Lex (C & C++).
744register_language ('name' => 'lex',
745 'Name' => 'Lex',
746 'config_vars' => ['LEX'],
747 'rule_file' => 'lex',
748 'flags' => ['LFLAGS'],
749 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
750 'compiler' => 'LEXCOMPILE',
751 'extensions' => ['.l'],
752 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
753 return ($ext,) },
754 '_finish' => \&lang_lex_finish,
755 '_target_hook' => \&lang_lex_target_hook);
756register_language ('name' => 'lexxx',
757 'Name' => 'Lex (C++)',
758 'config_vars' => ['LEX'],
759 'rule_file' => 'lex',
760 'flags' => ['LFLAGS'],
761 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
762 'compiler' => 'LEXCOMPILE',
763 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
764 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
765 return ($ext,) },
766 '_finish' => \&lang_lex_finish,
767 '_target_hook' => \&lang_lex_target_hook);
768
769# Assembler.
770register_language ('name' => 'asm',
771 'Name' => 'Assembler',
772 'config_vars' => ['CCAS', 'CCASFLAGS'],
773
774 'flags' => ['CCASFLAGS'],
775 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
776 # or anything else required. They can also set AS.
777 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
778 'compiler' => 'CCASCOMPILE',
779 'compile_flag' => '-c',
780 'extensions' => ['.s', '.S'],
781
782 # With assembly we still use the C linker.
783 '_finish' => \&lang_c_finish);
784
785# Fortran 77
786register_language ('name' => 'f77',
787 'Name' => 'Fortran 77',
788 'linker' => 'F77LINK',
789 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
790 'flags' => ['FFLAGS'],
791 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
792 'compiler' => 'F77COMPILE',
793 'compile_flag' => '-c',
794 'output_flag' => '-o',
795 'lder' => 'F77LD',
796 'ld' => '$(F77)',
797 'pure' => 1,
798 'extensions' => ['.f', '.for', '.f90']);
799
800# Preprocessed Fortran 77
801#
802# The current support for preprocessing Fortran 77 just involves
803# passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
804# $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
805# this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
806# for `make' Version 3.76 Beta' (specifically, from info file
807# `(make)Catalogue of Rules').
808#
809# A better approach would be to write an Autoconf test
810# (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
811# Fortran 77 compilers know how to do preprocessing. The Autoconf
812# macro AC_PROG_FPP should test the Fortran 77 compiler first for
813# preprocessing capabilities, and then fall back on cpp (if cpp were
814# available).
815register_language ('name' => 'ppf77',
816 'Name' => 'Preprocessed Fortran 77',
817 'config_vars' => ['F77'],
818 'linker' => 'F77LINK',
819 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
820 'lder' => 'F77LD',
821 'ld' => '$(F77)',
822 'flags' => ['FFLAGS', 'CPPFLAGS'],
823 'compiler' => 'PPF77COMPILE',
824 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
825 'compile_flag' => '-c',
826 'output_flag' => '-o',
827 'pure' => 1,
828 'extensions' => ['.F']);
829
830# Ratfor.
831register_language ('name' => 'ratfor',
832 'Name' => 'Ratfor',
833 'config_vars' => ['F77'],
834 'linker' => 'F77LINK',
835 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
836 'lder' => 'F77LD',
837 'ld' => '$(F77)',
838 'flags' => ['RFLAGS', 'FFLAGS'],
839 # FIXME also FFLAGS.
840 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
841 'compiler' => 'RCOMPILE',
842 'compile_flag' => '-c',
843 'output_flag' => '-o',
844 'pure' => 1,
845 'extensions' => ['.r']);
846
847# Java via gcj.
848register_language ('name' => 'java',
849 'Name' => 'Java',
850 'config_vars' => ['GCJ'],
851 'linker' => 'GCJLINK',
852 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
853 'autodep' => 'GCJ',
854 'flags' => ['GCJFLAGS'],
855 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
856 'compiler' => 'GCJCOMPILE',
857 'compile_flag' => '-c',
858 'output_flag' => '-o',
859 'lder' => 'GCJLD',
860 'ld' => '$(GCJ)',
861 'pure' => 1,
862 'extensions' => ['.java', '.class', '.zip', '.jar']);
863
864################################################################
865
866# Error reporting functions.
867
868# err_am ($MESSAGE, [%OPTIONS])
869# -----------------------------
870# Uncategorized errors about the current Makefile.am.
871sub err_am ($;%)
872{
873 msg_am ('error', @_);
874}
875
876# err_ac ($MESSAGE, [%OPTIONS])
877# -----------------------------
878# Uncategorized errors about configure.ac.
879sub err_ac ($;%)
880{
881 msg_ac ('error', @_);
882}
883
884# msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
885# ---------------------------------------
886# Messages about about the current Makefile.am.
887sub msg_am ($$;%)
888{
889 my ($channel, $msg, %opts) = @_;
890 msg $channel, "${am_file}.am", $msg, %opts;
891}
892
893# msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
894# ---------------------------------------
895# Messages about about configure.ac.
896sub msg_ac ($$;%)
897{
898 my ($channel, $msg, %opts) = @_;
899 msg $channel, $configure_ac, $msg, %opts;
900}
901
902################################################################
903
904# subst ($TEXT)
905# -------------
906# Return a configure-style substitution using the indicated text.
907# We do this to avoid having the substitutions directly in automake.in;
908# when we do that they are sometimes removed and this causes confusion
909# and bugs.
910sub subst ($)
911{
912 my ($text) = @_;
913 return '@' . $text . '@';
914}
915
916################################################################
917
918
919# $BACKPATH
920# &backname ($REL-DIR)
921# --------------------
922# If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
923# For instance `src/foo' => `../..'.
924# Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
925sub backname ($)
926{
927 my ($file) = @_;
928 my @res;
929 foreach (split (/\//, $file))
930 {
931 next if $_ eq '.' || $_ eq '';
932 if ($_ eq '..')
933 {
934 pop @res;
935 }
936 else
937 {
938 push (@res, '..');
939 }
940 }
941 return join ('/', @res) || '.';
942}
943
944################################################################
945
946
947# Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
948sub handle_options
949{
950 my $var = var ('AUTOMAKE_OPTIONS');
951 if ($var)
952 {
953 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
954 if (process_option_list ($var->rdef (TRUE)->location,
955 $var->value_as_list_recursive (cond_filter =>
956 TRUE)))
957 {
958 return 1;
959 }
960 }
961
962 if ($strictness == GNITS)
963 {
964 set_option ('readme-alpha', INTERNAL);
965 set_option ('std-options', INTERNAL);
966 set_option ('check-news', INTERNAL);
967 }
968
969 return 0;
970}
971
972# shadow_unconditionally ($varname, $where)
973# -----------------------------------------
974# Return a $(variable) that contains all possible values
975# $varname can take.
976# If the VAR wasn't defined conditionally, return $(VAR).
977# Otherwise we create a am__VAR_DIST variable which contains
978# all possible values, and return $(am__VAR_DIST).
979sub shadow_unconditionally ($$)
980{
981 my ($varname, $where) = @_;
982 my $var = var $varname;
983 if ($var->has_conditional_contents)
984 {
985 $varname = "am__${varname}_DIST";
986 my @files = uniq ($var->value_as_list_recursive);
987 define_pretty_variable ($varname, TRUE, $where, @files);
988 }
989 return "\$($varname)"
990}
991
992# get_object_extension ($OUT)
993# ---------------------------
994# Return object extension. Just once, put some code into the output.
995# OUT is the name of the output file
996sub get_object_extension
997{
998 my ($out) = @_;
999
1000 # Maybe require libtool library object files.
1001 my $extension = '.$(OBJEXT)';
1002 $extension = '.lo' if ($out =~ /\.la$/);
1003
1004 # Check for automatic de-ANSI-fication.
1005 $extension = '$U' . $extension
1006 if option 'ansi2knr';
1007
1008 $get_object_extension_was_run = 1;
1009
1010 return $extension;
1011}
1012
1013
1014# Call finish function for each language that was used.
1015sub handle_languages
1016{
1017 if (! option 'no-dependencies')
1018 {
1019 # Include auto-dep code. Don't include it if DEP_FILES would
1020 # be empty.
1021 if (&saw_sources_p (0) && keys %dep_files)
1022 {
1023 # Set location of depcomp.
1024 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1025 INTERNAL);
1026 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1027
1028 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1029
1030 my @deplist = sort keys %dep_files;
1031
1032 # We define this as a conditional variable because BSD
1033 # make can't handle backslashes for continuing comments on
1034 # the following line.
1035 define_pretty_variable ('DEP_FILES',
1036 new Automake::Condition ('AMDEP_TRUE'),
1037 INTERNAL, @deplist);
1038
1039 # Generate each `include' individually. Irix 6 make will
1040 # not properly include several files resulting from a
1041 # variable expansion; generating many separate includes
1042 # seems safest.
1043 $output_rules .= "\n";
1044 foreach my $iter (@deplist)
1045 {
1046 $output_rules .= (subst ('AMDEP_TRUE')
1047 . subst ('am__include')
1048 . ' '
1049 . subst ('am__quote')
1050 . $iter
1051 . subst ('am__quote')
1052 . "\n");
1053 }
1054
1055 # Compute the set of directories to remove in distclean-depend.
1056 my @depdirs = uniq (map { dirname ($_) } @deplist);
1057 $output_rules .= &file_contents ('depend',
1058 new Automake::Location,
1059 DEPDIRS => "@depdirs");
1060 }
1061 }
1062 else
1063 {
1064 &define_variable ('depcomp', '', INTERNAL);
1065 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1066 }
1067
1068 my %done;
1069
1070 # Is the c linker needed?
1071 my $needs_c = 0;
1072 foreach my $ext (sort keys %extension_seen)
1073 {
1074 next unless $extension_map{$ext};
1075
1076 my $lang = $languages{$extension_map{$ext}};
1077
1078 my $rule_file = $lang->rule_file || 'depend2';
1079
1080 # Get information on $LANG.
1081 my $pfx = $lang->autodep;
1082 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1083
1084 my ($AMDEP, $FASTDEP) =
1085 (option 'no-dependencies' || $lang->autodep eq 'no')
1086 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1087
1088 my %transform = ('EXT' => $ext,
1089 'PFX' => $pfx,
1090 'FPFX' => $fpfx,
1091 'AMDEP' => $AMDEP,
1092 'FASTDEP' => $FASTDEP,
1093 '-c' => $lang->compile_flag || '',
1094 'MORE-THAN-ONE'
1095 => (count_files_for_language ($lang->name) > 1));
1096
1097 # Generate the appropriate rules for this extension.
1098 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1099 || defined $lang->compile)
1100 {
1101 # Some C compilers don't support -c -o. Use it only if really
1102 # needed.
1103 my $output_flag = $lang->output_flag || '';
1104 $output_flag = '-o'
1105 if (! $output_flag
1106 && $lang->name eq 'c'
1107 && option 'subdir-objects');
1108
1109 # Compute a possible derived extension.
1110 # This is not used by depend2.am.
1111 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1112
1113 $output_rules .=
1114 file_contents ($rule_file,
1115 new Automake::Location,
1116 %transform,
1117 GENERIC => 1,
1118
1119 'DERIVED-EXT' => $der_ext,
1120
1121 # In this situation we know that the
1122 # object is in this directory, so
1123 # $(DEPDIR) is the correct location for
1124 # dependencies.
1125 DEPBASE => '$(DEPDIR)/$*',
1126 BASE => '$*',
1127 SOURCE => '$<',
1128 OBJ => '$@',
1129 OBJOBJ => '$@',
1130 LTOBJ => '$@',
1131
1132 COMPILE => '$(' . $lang->compiler . ')',
1133 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1134 -o => $output_flag);
1135 }
1136
1137 # Now include code for each specially handled object with this
1138 # language.
1139 my %seen_files = ();
1140 foreach my $file (@{$lang_specific_files{$lang->name}})
1141 {
1142 my ($derived, $source, $obj, $myext) = split (' ', $file);
1143
1144 # We might see a given object twice, for instance if it is
1145 # used under different conditions.
1146 next if defined $seen_files{$obj};
1147 $seen_files{$obj} = 1;
1148
1149 prog_error ("found " . $lang->name .
1150 " in handle_languages, but compiler not defined")
1151 unless defined $lang->compile;
1152
1153 my $obj_compile = $lang->compile;
1154
1155 # Rewrite each occurrence of `AM_$flag' in the compile
1156 # rule into `${derived}_$flag' if it exists.
1157 for my $flag (@{$lang->flags})
1158 {
1159 my $val = "${derived}_$flag";
1160 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1161 if set_seen ($val);
1162 }
1163
1164 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1165
1166 # We _need_ `-o' for per object rules.
1167 my $output_flag = $lang->output_flag || '-o';
1168
1169 my $depbase = dirname ($obj);
1170 $depbase = ''
1171 if $depbase eq '.';
1172 $depbase .= '/'
1173 unless $depbase eq '';
1174 $depbase .= '$(DEPDIR)/' . basename ($obj);
1175
1176 # Support for deansified files in subdirectories is ugly
1177 # enough to deserve an explanation.
1178 #
1179 # A Note about normal ansi2knr processing first. On
1180 #
1181 # AUTOMAKE_OPTIONS = ansi2knr
1182 # bin_PROGRAMS = foo
1183 # foo_SOURCES = foo.c
1184 #
1185 # we generate rules similar to:
1186 #
1187 # foo: foo$U.o; link ...
1188 # foo$U.o: foo$U.c; compile ...
1189 # foo_.c: foo.c; ansi2knr ...
1190 #
1191 # this is fairly compact, and will call ansi2knr depending
1192 # on the value of $U (`' or `_').
1193 #
1194 # It's harder with subdir sources. On
1195 #
1196 # AUTOMAKE_OPTIONS = ansi2knr
1197 # bin_PROGRAMS = foo
1198 # foo_SOURCES = sub/foo.c
1199 #
1200 # we have to create foo_.c in the current directory.
1201 # (Unless the user asks 'subdir-objects'.) This is important
1202 # in case the same file (`foo.c') is compiled from other
1203 # directories with different cpp options: foo_.c would
1204 # be preprocessed for only one set of options if it were
1205 # put in the subdirectory.
1206 #
1207 # Because foo$U.o must be built from either foo_.c or
1208 # sub/foo.c we can't be as concise as in the first example.
1209 # Instead we output
1210 #
1211 # foo: foo$U.o; link ...
1212 # foo_.o: foo_.c; compile ...
1213 # foo.o: sub/foo.c; compile ...
1214 # foo_.c: foo.c; ansi2knr ...
1215 #
1216 # This is why we'll now transform $rule_file twice
1217 # if we detect this case.
1218 # A first time we output the compile rule with `$U'
1219 # replaced by `_' and the source directory removed,
1220 # and another time we simply remove `$U'.
1221 #
1222 # Note that at this point $source (as computed by
1223 # &handle_single_transform_list) is `sub/foo$U.c'.
1224 # This can be confusing: it can be used as-is when
1225 # subdir-objects is set, otherwise you have to know
1226 # it really means `foo_.c' or `sub/foo.c'.
1227 my $objdir = dirname ($obj);
1228 my $srcdir = dirname ($source);
1229 if ($lang->ansi && $obj =~ /\$U/)
1230 {
1231 prog_error "`$obj' contains \$U, but `$source' doesn't."
1232 if $source !~ /\$U/;
1233
1234 (my $source_ = $source) =~ s/\$U/_/g;
1235 # Explicitly clean the _.c files if they are in
1236 # a subdirectory. (In the current directory they get
1237 # erased by a `rm -f *_.c' rule.)
1238 $clean_files{$source_} = MOSTLY_CLEAN
1239 if $objdir ne '.';
1240 # Output an additional rule if _.c and .c are not in
1241 # the same directory. (_.c is always in $objdir.)
1242 if ($objdir ne $srcdir)
1243 {
1244 (my $obj_ = $obj) =~ s/\$U/_/g;
1245 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1246 $source_ = basename ($source_);
1247
1248 $output_rules .=
1249 file_contents ($rule_file,
1250 new Automake::Location,
1251 %transform,
1252 GENERIC => 0,
1253
1254 DEPBASE => $depbase_,
1255 BASE => $obj_,
1256 SOURCE => $source_,
1257 OBJ => "$obj_$myext",
1258 OBJOBJ => "$obj_.obj",
1259 LTOBJ => "$obj_.lo",
1260
1261 COMPILE => $obj_compile,
1262 LTCOMPILE => $obj_ltcompile,
1263 -o => $output_flag);
1264 $obj =~ s/\$U//g;
1265 $depbase =~ s/\$U//g;
1266 $source =~ s/\$U//g;
1267 }
1268 }
1269
1270 $output_rules .=
1271 file_contents ($rule_file,
1272 new Automake::Location,
1273 %transform,
1274 GENERIC => 0,
1275
1276 DEPBASE => $depbase,
1277 BASE => $obj,
1278 SOURCE => $source,
1279 # Use $myext and not `.o' here, in case
1280 # we are actually building a new source
1281 # file -- e.g. via yacc.
1282 OBJ => "$obj$myext",
1283 OBJOBJ => "$obj.obj",
1284 LTOBJ => "$obj.lo",
1285
1286 COMPILE => $obj_compile,
1287 LTCOMPILE => $obj_ltcompile,
1288 -o => $output_flag);
1289 }
1290
1291 # The rest of the loop is done once per language.
1292 next if defined $done{$lang};
1293 $done{$lang} = 1;
1294
1295 # Load the language dependent Makefile chunks.
1296 my %lang = map { uc ($_) => 0 } keys %languages;
1297 $lang{uc ($lang->name)} = 1;
1298 $output_rules .= file_contents ('lang-compile',
1299 new Automake::Location,
1300 %transform, %lang);
1301
1302 # If the source to a program consists entirely of code from a
1303 # `pure' language, for instance C++ for Fortran 77, then we
1304 # don't need the C compiler code. However if we run into
1305 # something unusual then we do generate the C code. There are
1306 # probably corner cases here that do not work properly.
1307 # People linking Java code to Fortran code deserve pain.
1308 $needs_c ||= ! $lang->pure;
1309
1310 define_compiler_variable ($lang)
1311 if ($lang->compile);
1312
1313 define_linker_variable ($lang)
1314 if ($lang->link);
1315
1316 require_variables ("$am_file.am", $lang->Name . " source seen",
1317 TRUE, @{$lang->config_vars});
1318
1319 # Call the finisher.
1320 $lang->finish;
1321
1322 # Flags listed in `->flags' are user variables (per GNU Standards),
1323 # they should not be overridden in the Makefile...
1324 my @dont_override = @{$lang->flags};
1325 # ... and so is LDFLAGS.
1326 push @dont_override, 'LDFLAGS' if $lang->link;
1327
1328 foreach my $flag (@dont_override)
1329 {
1330 my $var = var $flag;
1331 if ($var)
1332 {
1333 for my $cond ($var->conditions->conds)
1334 {
1335 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1336 {
1337 msg_cond_var ('gnu', $cond, $flag,
1338 "`$flag' is a user variable, "
1339 . "you should not override it;\n"
1340 . "use `AM_$flag' instead.");
1341 }
1342 }
1343 }
1344 }
1345 }
1346
1347 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1348 # suffix rule was learned), don't bother with the C stuff. But if
1349 # anything else creeps in, then use it.
1350 $needs_c = 1
1351 if $need_link || suffix_rules_count > 1;
1352
1353 if ($needs_c)
1354 {
1355 &define_compiler_variable ($languages{'c'})
1356 unless defined $done{$languages{'c'}};
1357 define_linker_variable ($languages{'c'});
1358 }
1359}
1360
1361# Check to make sure a source defined in LIBOBJS is not explicitly
1362# mentioned. This is a separate function (as opposed to being inlined
1363# in handle_source_transform) because it isn't always appropriate to
1364# do this check.
1365sub check_libobjs_sources
1366{
1367 my ($one_file, $unxformed) = @_;
1368
1369 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1370 'dist_EXTRA_', 'nodist_EXTRA_')
1371 {
1372 my @files;
1373 my $varname = $prefix . $one_file . '_SOURCES';
1374 my $var = var ($varname);
1375 if ($var)
1376 {
1377 @files = $var->value_as_list_recursive;
1378 }
1379 elsif ($prefix eq '')
1380 {
1381 @files = ($unxformed . '.c');
1382 }
1383 else
1384 {
1385 next;
1386 }
1387
1388 foreach my $file (@files)
1389 {
1390 err_var ($prefix . $one_file . '_SOURCES',
1391 "automatically discovered file `$file' should not" .
1392 " be explicitly mentioned")
1393 if defined $libsources{$file};
1394 }
1395 }
1396}
1397
1398
1399# @OBJECTS
1400# handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1401# -----------------------------------------------------------------------
1402# Does much of the actual work for handle_source_transform.
1403# Arguments are:
1404# $VAR is the name of the variable that the source filenames come from
1405# $TOPPARENT is the name of the _SOURCES variable which is being processed
1406# $DERIVED is the name of resulting executable or library
1407# $OBJ is the object extension (e.g., `$U.lo')
1408# @FILES is the list of source files to transform
1409# Result is a list of the names of objects
1410# %linkers_used will be updated with any linkers needed
1411sub handle_single_transform_list ($$$$@)
1412{
1413 my ($var, $topparent, $derived, $obj, @files) = @_;
1414 my @result = ();
1415 my $nonansi_obj = $obj;
1416 $nonansi_obj =~ s/\$U//g;
1417
1418 # Turn sources into objects. We use a while loop like this
1419 # because we might add to @files in the loop.
1420 while (scalar @files > 0)
1421 {
1422 $_ = shift @files;
1423
1424 # Configure substitutions in _SOURCES variables are errors.
1425 if (/^\@.*\@$/)
1426 {
1427 my $parent_msg = '';
1428 $parent_msg = "\nand is referred to from `$topparent'"
1429 if $topparent ne $var->name;
1430 err_var ($var,
1431 "`" . $var->name . "' includes configure substitution `$_'"
1432 . $parent_msg . ";\nconfigure " .
1433 "substitutions are not allowed in _SOURCES variables");
1434 next;
1435 }
1436
1437 # If the source file is in a subdirectory then the `.o' is put
1438 # into the current directory, unless the subdir-objects option
1439 # is in effect.
1440
1441 # Split file name into base and extension.
1442 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1443 my $full = $_;
1444 my $directory = $1 || '';
1445 my $base = $2;
1446 my $extension = $3;
1447
1448 # We must generate a rule for the object if it requires its own flags.
1449 my $renamed = 0;
1450 my ($linker, $object);
1451
1452 # This records whether we've seen a derived source file (e.g.
1453 # yacc output).
1454 my $derived_source = 0;
1455
1456 # This holds the `aggregate context' of the file we are
1457 # currently examining. If the file is compiled with
1458 # per-object flags, then it will be the name of the object.
1459 # Otherwise it will be `AM'. This is used by the target hook
1460 # language function.
1461 my $aggregate = 'AM';
1462
1463 $extension = &derive_suffix ($extension, $nonansi_obj);
1464 my $lang;
1465 if ($extension_map{$extension} &&
1466 ($lang = $languages{$extension_map{$extension}}))
1467 {
1468 # Found the language, so see what it says.
1469 &saw_extension ($extension);
1470
1471 # Note: computed subr call. The language rewrite function
1472 # should return one of the LANG_* constants. It could
1473 # also return a list whose first value is such a constant
1474 # and whose second value is a new source extension which
1475 # should be applied. This means this particular language
1476 # generates another source file which we must then process
1477 # further.
1478 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1479 my ($r, $source_extension)
1480 = &$subr ($directory, $base, $extension);
1481 # Skip this entry if we were asked not to process it.
1482 next if $r == LANG_IGNORE;
1483
1484 # Now extract linker and other info.
1485 $linker = $lang->linker;
1486
1487 my $this_obj_ext;
1488 if (defined $source_extension)
1489 {
1490 $this_obj_ext = $source_extension;
1491 $derived_source = 1;
1492 }
1493 elsif ($lang->ansi)
1494 {
1495 $this_obj_ext = $obj;
1496 }
1497 else
1498 {
1499 $this_obj_ext = $nonansi_obj;
1500 }
1501 $object = $base . $this_obj_ext;
1502
1503 # Do we have per-executable flags for this executable?
1504 my $have_per_exec_flags = 0;
1505 foreach my $flag (@{$lang->flags})
1506 {
1507 if (set_seen ("${derived}_$flag"))
1508 {
1509 $have_per_exec_flags = 1;
1510 last;
1511 }
1512 }
1513
1514 if ($have_per_exec_flags)
1515 {
1516 # We have a per-executable flag in effect for this
1517 # object. In this case we rewrite the object's
1518 # name to ensure it is unique. We also require
1519 # the `compile' program to deal with compilers
1520 # where `-c -o' does not work.
1521
1522 # We choose the name `DERIVED_OBJECT' to ensure
1523 # (1) uniqueness, and (2) continuity between
1524 # invocations. However, this will result in a
1525 # name that is too long for losing systems, in
1526 # some situations. So we provide _SHORTNAME to
1527 # override.
1528
1529 my $dname = $derived;
1530 my $var = var ($derived . '_SHORTNAME');
1531 if ($var)
1532 {
1533 # FIXME: should use the same Condition as
1534 # the _SOURCES variable. But this is really
1535 # silly overkill -- nobody should have
1536 # conditional shortnames.
1537 $dname = $var->variable_value;
1538 }
1539 $object = $dname . '-' . $object;
1540
1541 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1542 if $lang->name eq 'c';
1543
1544 prog_error ($lang->name . " flags defined without compiler")
1545 if ! defined $lang->compile;
1546
1547 $renamed = 1;
1548 }
1549
1550 # If rewrite said it was ok, put the object into a
1551 # subdir.
1552 if ($r == LANG_SUBDIR && $directory ne '')
1553 {
1554 $object = $directory . '/' . $object;
1555 }
1556
1557 # If doing dependency tracking, then we can't print
1558 # the rule. If we have a subdir object, we need to
1559 # generate an explicit rule. Actually, in any case
1560 # where the object is not in `.' we need a special
1561 # rule. The per-object rules in this case are
1562 # generated later, by handle_languages.
1563 if ($renamed || $directory ne '')
1564 {
1565 my $obj_sans_ext = substr ($object, 0,
1566 - length ($this_obj_ext));
1567 my $full_ansi = $full;
1568 if ($lang->ansi && option 'ansi2knr')
1569 {
1570 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1571 $obj_sans_ext .= '$U';
1572 }
1573
1574 my $val = ("$full_ansi $obj_sans_ext "
1575 # Only use $this_obj_ext in the derived
1576 # source case because in the other case we
1577 # *don't* want $(OBJEXT) to appear here.
1578 . ($derived_source ? $this_obj_ext : '.o'));
1579
1580 # If we renamed the object then we want to use the
1581 # per-executable flag name. But if this is simply a
1582 # subdir build then we still want to use the AM_ flag
1583 # name.
1584 if ($renamed)
1585 {
1586 $val = "$derived $val";
1587 $aggregate = $derived;
1588 }
1589 else
1590 {
1591 $val = "AM $val";
1592 }
1593
1594 # Each item on this list is a string consisting of
1595 # four space-separated values: the derived flag prefix
1596 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1597 # source file, the base name of the output file, and
1598 # the extension for the object file.
1599 push (@{$lang_specific_files{$lang->name}}, $val);
1600 }
1601 }
1602 elsif ($extension eq $nonansi_obj)
1603 {
1604 # This is probably the result of a direct suffix rule.
1605 # In this case we just accept the rewrite.
1606 $object = "$base$extension";
1607 $linker = '';
1608 }
1609 else
1610 {
1611 # No error message here. Used to have one, but it was
1612 # very unpopular.
1613 # FIXME: we could potentially do more processing here,
1614 # perhaps treating the new extension as though it were a
1615 # new source extension (as above). This would require
1616 # more restructuring than is appropriate right now.
1617 next;
1618 }
1619
1620 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1621 if (defined $object_map{$object}
1622 && $object_map{$object} ne $full);
1623
1624 my $comp_val = (($object =~ /\.lo$/)
1625 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1626 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1627 if (defined $object_compilation_map{$comp_obj}
1628 && $object_compilation_map{$comp_obj} != 0
1629 # Only see the error once.
1630 && ($object_compilation_map{$comp_obj}
1631 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1632 && $object_compilation_map{$comp_obj} != $comp_val)
1633 {
1634 err_am "object `$comp_obj' created both with libtool and without";
1635 }
1636 $object_compilation_map{$comp_obj} |= $comp_val;
1637
1638 if (defined $lang)
1639 {
1640 # Let the language do some special magic if required.
1641 $lang->target_hook ($aggregate, $object, $full);
1642 }
1643
1644 if ($derived_source)
1645 {
1646 prog_error ($lang->name . " has automatic dependency tracking")
1647 if $lang->autodep ne 'no';
1648 # Make sure this new source file is handled next. That will
1649 # make it appear to be at the right place in the list.
1650 unshift (@files, $object);
1651 # Distribute derived sources unless the source they are
1652 # derived from is not.
1653 &push_dist_common ($object)
1654 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1655 next;
1656 }
1657
1658 $linkers_used{$linker} = 1;
1659
1660 push (@result, $object);
1661
1662 if (! defined $object_map{$object})
1663 {
1664 my @dep_list = ();
1665 $object_map{$object} = $full;
1666
1667 # If resulting object is in subdir, we need to make
1668 # sure the subdir exists at build time.
1669 if ($object =~ /\//)
1670 {
1671 # FIXME: check that $DIRECTORY is somewhere in the
1672 # project
1673
1674 # For Java, the way we're handling it right now, a
1675 # `..' component doesn't make sense.
1676 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1677 {
1678 err_am "`$full' should not contain a `..' component";
1679 }
1680
1681 # Make sure object is removed by `make mostlyclean'.
1682 $compile_clean_files{$object} = MOSTLY_CLEAN;
1683 # If we have a libtool object then we also must remove
1684 # the ordinary .o.
1685 if ($object =~ /\.lo$/)
1686 {
1687 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1688 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1689
1690 # Remove any libtool object in this directory.
1691 $libtool_clean_directories{$directory} = 1;
1692 }
1693
1694 push (@dep_list, require_build_directory ($directory));
1695
1696 # If we're generating dependencies, we also want
1697 # to make sure that the appropriate subdir of the
1698 # .deps directory is created.
1699 push (@dep_list,
1700 require_build_directory ($directory . '/$(DEPDIR)'))
1701 unless option 'no-dependencies';
1702 }
1703
1704 &pretty_print_rule ($object . ':', "\t", @dep_list)
1705 if scalar @dep_list > 0;
1706 }
1707
1708 # Transform .o or $o file into .P file (for automatic
1709 # dependency code).
1710 if ($lang && $lang->autodep ne 'no')
1711 {
1712 my $depfile = $object;
1713 $depfile =~ s/\.([^.]*)$/.P$1/;
1714 $depfile =~ s/\$\(OBJEXT\)$/o/;
1715 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1716 . basename ($depfile)} = 1;
1717 }
1718 }
1719
1720 return @result;
1721}
1722
1723
1724# $LINKER
1725# define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1726# $OBJ, $PARENT, $TOPPARENT, $WHERE)
1727# ---------------------------------------------------------------------
1728# Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1729#
1730# Arguments are:
1731# $VAR is the name of the _SOURCES variable
1732# $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1733# it will be generated and returned).
1734# $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1735# work done to determine the linker will be).
1736# $ONE_FILE is the canonical (transformed) name of object to build
1737# $OBJ is the object extension (i.e. either `.o' or `.lo').
1738# $TOPPARENT is the _SOURCES variable being processed.
1739# $WHERE context into which this definition is done
1740#
1741# Result is a pair ($LINKER, $OBJVAR):
1742# $LINKER is a boolean, true if a linker is needed to deal with the objects
1743sub define_objects_from_sources ($$$$$$$)
1744{
1745 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1746
1747 my $needlinker = "";
1748
1749 transform_variable_recursively
1750 ($var, $objvar, 'am__objects', $nodefine, $where,
1751 # The transform code to run on each filename.
1752 sub {
1753 my ($subvar, $val, $cond, $full_cond) = @_;
1754 my @trans = &handle_single_transform_list ($subvar, $topparent,
1755 $one_file, $obj, $val);
1756 $needlinker = "true" if @trans;
1757 return @trans;
1758 });
1759
1760 return $needlinker;
1761}
1762
1763
1764# Handle SOURCE->OBJECT transform for one program or library.
1765# Arguments are:
1766# canonical (transformed) name of object to build
1767# actual name of object to build
1768# object extension (i.e. either `.o' or `$o'.
1769# Return result is name of linker variable that must be used.
1770# Empty return means just use `LINK'.
1771sub handle_source_transform
1772{
1773 # one_file is canonical name. unxformed is given name. obj is
1774 # object extension.
1775 my ($one_file, $unxformed, $obj, $where) = @_;
1776
1777 my ($linker) = '';
1778
1779 # No point in continuing if _OBJECTS is defined.
1780 return if reject_var ($one_file . '_OBJECTS',
1781 $one_file . '_OBJECTS should not be defined');
1782
1783 my %used_pfx = ();
1784 my $needlinker;
1785 %linkers_used = ();
1786 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1787 'dist_EXTRA_', 'nodist_EXTRA_')
1788 {
1789 my $varname = $prefix . $one_file . "_SOURCES";
1790 my $var = var $varname;
1791 next unless $var;
1792
1793 # We are going to define _OBJECTS variables using the prefix.
1794 # Then we glom them all together. So we can't use the null
1795 # prefix here as we need it later.
1796 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1797
1798 # Keep track of which prefixes we saw.
1799 $used_pfx{$xpfx} = 1
1800 unless $prefix =~ /EXTRA_/;
1801
1802 push @sources, "\$($varname)";
1803 push @dist_sources, shadow_unconditionally ($varname, $where)
1804 unless ($prefix =~ /^nodist_/);
1805
1806 $needlinker |=
1807 define_objects_from_sources ($varname,
1808 $xpfx . $one_file . '_OBJECTS',
1809 $prefix =~ /EXTRA_/,
1810 $one_file, $obj, $varname, $where);
1811 }
1812 if ($needlinker)
1813 {
1814 $linker ||= &resolve_linker (%linkers_used);
1815 }
1816
1817 my @keys = sort keys %used_pfx;
1818 if (scalar @keys == 0)
1819 {
1820 # The default source for libfoo.la is libfoo.c, but for
1821 # backward compatibility we first look at libfoo_la.c
1822 my $old_default_source = "$one_file.c";
1823 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1824 if ($old_default_source ne $default_source
1825 && (rule $old_default_source
1826 || rule '$(srcdir)/' . $old_default_source
1827 || rule '${srcdir}/' . $old_default_source
1828 || -f $old_default_source))
1829 {
1830 my $loc = $where->clone;
1831 $loc->pop_context;
1832 msg ('obsolete', $loc,
1833 "the default source for `$unxformed' has been changed "
1834 . "to `$default_source'.\n(Using `$old_default_source' for "
1835 . "backward compatibility.)");
1836 $default_source = $old_default_source;
1837 }
1838 # If a rule exists to build this source with a $(srcdir)
1839 # prefix, use that prefix in our variables too. This is for
1840 # the sake of BSD Make.
1841 if (rule '$(srcdir)/' . $default_source
1842 || rule '${srcdir}/' . $default_source)
1843 {
1844 $default_source = '$(srcdir)/' . $default_source;
1845 }
1846
1847 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1848 push (@sources, $default_source);
1849 push (@dist_sources, $default_source);
1850
1851 %linkers_used = ();
1852 my (@result) =
1853 &handle_single_transform_list ($one_file . '_SOURCES',
1854 $one_file . '_SOURCES',
1855 $one_file, $obj,
1856 $default_source);
1857 $linker ||= &resolve_linker (%linkers_used);
1858 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1859 }
1860 else
1861 {
1862 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1863 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1864 }
1865
1866 # If we want to use `LINK' we must make sure it is defined.
1867 if ($linker eq '')
1868 {
1869 $need_link = 1;
1870 }
1871
1872 return $linker;
1873}
1874
1875
1876# handle_lib_objects ($XNAME, $VAR)
1877# ---------------------------------
1878# Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1879# Also, generate _DEPENDENCIES variable if appropriate.
1880# Arguments are:
1881# transformed name of object being built, or empty string if no object
1882# name of _LDADD/_LIBADD-type variable to examine
1883# Returns 1 if LIBOBJS seen, 0 otherwise.
1884sub handle_lib_objects
1885{
1886 my ($xname, $varname) = @_;
1887
1888 my $var = var ($varname);
1889 prog_error "handle_lib_objects: `$varname' undefined"
1890 unless $var;
1891 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1892 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1893 my $prefix = $1 || 'AM_';
1894
1895 my $seen_libobjs = 0;
1896 my $flagvar = 0;
1897
1898 transform_variable_recursively
1899 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1900 ! $xname, INTERNAL,
1901 # Transformation function, run on each filename.
1902 sub {
1903 my ($subvar, $val, $cond, $full_cond) = @_;
1904
1905 if ($val =~ /^-/)
1906 {
1907 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1908 if ($val !~ /^-[lL]/ &&
1909 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1910 # for Libtool libraries or programs. (Actually we are a bit
1911 # laxest here since this code also applies to non-libtool
1912 # libraries or programs, for which -dlopen and -dlopreopen
1913 # are pure non-sence. Diagnosting this doesn't seems very
1914 # important: the developer will quickly get complaints from
1915 # the linker.)
1916 $val !~ /^-dl(?:pre)?open$/ &&
1917 # Only get this error once.
1918 ! $flagvar)
1919 {
1920 $flagvar = 1;
1921 # FIXME: should display a stack of nested variables
1922 # as context when $var != $subvar.
1923 err_var ($var, "linker flags such as `$val' belong in "
1924 . "`${prefix}LDFLAGS");
1925 }
1926 return ();
1927 }
1928 elsif ($val !~ /^\@.*\@$/)
1929 {
1930 # Assume we have a file of some sort, and output it into the
1931 # dependency variable. Autoconf substitutions are not output;
1932 # rarely is a new dependency substituted into e.g. foo_LDADD
1933 # -- but bad things (e.g. -lX11) are routinely substituted.
1934 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1935 # and handled specially below.
1936 return $val;
1937 }
1938 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1939 {
1940 handle_LIBOBJS ($subvar, $cond, $1);
1941 $seen_libobjs = 1;
1942 return $val;
1943 }
1944 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1945 {
1946 handle_ALLOCA ($subvar, $cond, $1);
1947 return $val;
1948 }
1949 else
1950 {
1951 return ();
1952 }
1953 });
1954
1955 return $seen_libobjs;
1956}
1957
1958sub handle_LIBOBJS ($$$)
1959{
1960 my ($var, $cond, $lt) = @_;
1961 $lt ||= '';
1962 my $myobjext = ($1 ? 'l' : '') . 'o';
1963
1964 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1965 if ! keys %libsources;
1966
1967 foreach my $iter (keys %libsources)
1968 {
1969 if ($iter =~ /\.[cly]$/)
1970 {
1971 &saw_extension ($&);
1972 &saw_extension ('.c');
1973 }
1974
1975 if ($iter =~ /\.h$/)
1976 {
1977 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1978 }
1979 elsif ($iter ne 'alloca.c')
1980 {
1981 my $rewrite = $iter;
1982 $rewrite =~ s/\.c$/.P$myobjext/;
1983 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1984 $rewrite = "^" . quotemeta ($iter) . "\$";
1985 # Only require the file if it is not a built source.
1986 my $bs = var ('BUILT_SOURCES');
1987 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
1988 {
1989 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1990 }
1991 }
1992 }
1993}
1994
1995sub handle_ALLOCA ($$$)
1996{
1997 my ($var, $cond, $lt) = @_;
1998 my $myobjext = ($lt ? 'l' : '') . 'o';
1999 $lt ||= '';
2000 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2001 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2002 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2003 &saw_extension ('c');
2004}
2005
2006# Canonicalize the input parameter
2007sub canonicalize
2008{
2009 my ($string) = @_;
2010 $string =~ tr/A-Za-z0-9_\@/_/c;
2011 return $string;
2012}
2013
2014# Canonicalize a name, and check to make sure the non-canonical name
2015# is never used. Returns canonical name. Arguments are name and a
2016# list of suffixes to check for.
2017sub check_canonical_spelling
2018{
2019 my ($name, @suffixes) = @_;
2020
2021 my $xname = &canonicalize ($name);
2022 if ($xname ne $name)
2023 {
2024 foreach my $xt (@suffixes)
2025 {
2026 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2027 }
2028 }
2029
2030 return $xname;
2031}
2032
2033
2034# handle_compile ()
2035# -----------------
2036# Set up the compile suite.
2037sub handle_compile ()
2038{
2039 return
2040 unless $get_object_extension_was_run;
2041
2042 # Boilerplate.
2043 my $default_includes = '';
2044 if (! option 'nostdinc')
2045 {
2046 $default_includes = ' -I. -I$(srcdir)';
2047
2048 my $var = var 'CONFIG_HEADER';
2049 if ($var)
2050 {
2051 foreach my $hdr (split (' ', $var->variable_value))
2052 {
2053 $default_includes .= ' -I' . dirname ($hdr);
2054 }
2055 }
2056 }
2057
2058 my (@mostly_rms, @dist_rms);
2059 foreach my $item (sort keys %compile_clean_files)
2060 {
2061 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2062 {
2063 push (@mostly_rms, "\t-rm -f $item");
2064 }
2065 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2066 {
2067 push (@dist_rms, "\t-rm -f $item");
2068 }
2069 else
2070 {
2071 prog_error 'invalid entry in %compile_clean_files';
2072 }
2073 }
2074
2075 my ($coms, $vars, $rules) =
2076 &file_contents_internal (1, "$libdir/am/compile.am",
2077 new Automake::Location,
2078 ('DEFAULT_INCLUDES' => $default_includes,
2079 'MOSTLYRMS' => join ("\n", @mostly_rms),
2080 'DISTRMS' => join ("\n", @dist_rms)));
2081 $output_vars .= $vars;
2082 $output_rules .= "$coms$rules";
2083
2084 # Check for automatic de-ANSI-fication.
2085 if (option 'ansi2knr')
2086 {
2087 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2088 my $ansi2knr_dir = '';
2089
2090 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2091 TRUE, "ANSI2KNR", "U");
2092
2093 # topdir is where ansi2knr should be.
2094 if ($ansi2knr_filename eq 'ansi2knr')
2095 {
2096 # Only require ansi2knr files if they should appear in
2097 # this directory.
2098 require_file ($ansi2knr_where, FOREIGN,
2099 'ansi2knr.c', 'ansi2knr.1');
2100
2101 # ansi2knr needs to be built before subdirs, so unshift it.
2102 unshift (@all, '$(ANSI2KNR)');
2103 }
2104 else
2105 {
2106 $ansi2knr_dir = dirname ($ansi2knr_filename);
2107 }
2108
2109 $output_rules .= &file_contents ('ansi2knr',
2110 new Automake::Location,
2111 'ANSI2KNR-DIR' => $ansi2knr_dir);
2112
2113 }
2114}
2115
2116# handle_libtool ()
2117# -----------------
2118# Handle libtool rules.
2119sub handle_libtool
2120{
2121 return unless var ('LIBTOOL');
2122
2123 # Libtool requires some files, but only at top level.
2124 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2125 if $relative_dir eq '.';
2126
2127 my @libtool_rms;
2128 foreach my $item (sort keys %libtool_clean_directories)
2129 {
2130 my $dir = ($item eq '.') ? '' : "$item/";
2131 # .libs is for Unix, _libs for DOS.
2132 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2133 }
2134
2135 # Output the libtool compilation rules.
2136 $output_rules .= &file_contents ('libtool',
2137 new Automake::Location,
2138 LTRMS => join ("\n", @libtool_rms));
2139}
2140
2141# handle_programs ()
2142# ------------------
2143# Handle C programs.
2144sub handle_programs
2145{
2146 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2147 'bin', 'sbin', 'libexec', 'pkglib',
2148 'noinst', 'check');
2149 return if ! @proglist;
2150
2151 my $seen_global_libobjs =
2152 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2153
2154 foreach my $pair (@proglist)
2155 {
2156 my ($where, $one_file) = @$pair;
2157
2158 my $seen_libobjs = 0;
2159 my $obj = &get_object_extension ($one_file);
2160
2161 # Strip any $(EXEEXT) suffix the user might have added, or this
2162 # will confuse &handle_source_transform and &check_canonical_spelling.
2163 # We'll add $(EXEEXT) back later anyway.
2164 $one_file =~ s/\$\(EXEEXT\)$//;
2165
2166 # Canonicalize names and check for misspellings.
2167 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2168 '_SOURCES', '_OBJECTS',
2169 '_DEPENDENCIES');
2170
2171 $where->push_context ("while processing program `$one_file'");
2172 $where->set (INTERNAL->get);
2173
2174 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2175
2176 if (var ($xname . "_LDADD"))
2177 {
2178 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2179 }
2180 else
2181 {
2182 # User didn't define prog_LDADD override. So do it.
2183 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2184
2185 # This does a bit too much work. But we need it to
2186 # generate _DEPENDENCIES when appropriate.
2187 if (var ('LDADD'))
2188 {
2189 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2190 }
2191 }
2192
2193 reject_var ($xname . '_LIBADD',
2194 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2195
2196 set_seen ($xname . '_DEPENDENCIES');
2197 set_seen ($xname . '_LDFLAGS');
2198
2199 # Determine program to use for link.
2200 my $xlink;
2201 if (var ($xname . '_LINK'))
2202 {
2203 $xlink = $xname . '_LINK';
2204 }
2205 else
2206 {
2207 $xlink = $linker ? $linker : 'LINK';
2208 }
2209
2210 # If the resulting program lies into a subdirectory,
2211 # make sure this directory will exist.
2212 my $dirstamp = require_build_directory_maybe ($one_file);
2213
2214 $output_rules .= &file_contents ('program',
2215 $where,
2216 PROGRAM => $one_file,
2217 XPROGRAM => $xname,
2218 XLINK => $xlink,
2219 DIRSTAMP => $dirstamp,
2220 EXEEXT => '$(EXEEXT)');
2221
2222 if ($seen_libobjs || $seen_global_libobjs)
2223 {
2224 if (var ($xname . '_LDADD'))
2225 {
2226 &check_libobjs_sources ($xname, $xname . '_LDADD');
2227 }
2228 elsif (var ('LDADD'))
2229 {
2230 &check_libobjs_sources ($xname, 'LDADD');
2231 }
2232 }
2233 }
2234}
2235
2236
2237# handle_libraries ()
2238# -------------------
2239# Handle libraries.
2240sub handle_libraries
2241{
2242 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2243 'lib', 'pkglib', 'noinst', 'check');
2244 return if ! @liblist;
2245
2246 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2247 'noinst', 'check');
2248
2249 if (@prefix)
2250 {
2251 my $var = rvar ($prefix[0] . '_LIBRARIES');
2252 $var->requires_variables ('library used', 'RANLIB');
2253 }
2254
2255 &define_variable ('AR', 'ar', INTERNAL);
2256 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2257
2258 foreach my $pair (@liblist)
2259 {
2260 my ($where, $onelib) = @$pair;
2261
2262 my $seen_libobjs = 0;
2263 # Check that the library fits the standard naming convention.
2264 if (basename ($onelib) !~ /^lib.*\.a/)
2265 {
2266 error $where, "`$onelib' is not a standard library name";
2267 }
2268
2269 $where->push_context ("while processing library `$onelib'");
2270 $where->set (INTERNAL->get);
2271
2272 my $obj = &get_object_extension ($onelib);
2273
2274 # Canonicalize names and check for misspellings.
2275 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2276 '_OBJECTS', '_DEPENDENCIES',
2277 '_AR');
2278
2279 if (! var ($xlib . '_AR'))
2280 {
2281 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2282 }
2283
2284 # Generate support for conditional object inclusion in
2285 # libraries.
2286 if (var ($xlib . '_LIBADD'))
2287 {
2288 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2289 {
2290 $seen_libobjs = 1;
2291 }
2292 }
2293 else
2294 {
2295 &define_variable ($xlib . "_LIBADD", '', $where);
2296 }
2297
2298 reject_var ($xlib . '_LDADD',
2299 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2300
2301 # Make sure we at look at this.
2302 set_seen ($xlib . '_DEPENDENCIES');
2303
2304 &handle_source_transform ($xlib, $onelib, $obj, $where);
2305
2306 # If the resulting library lies into a subdirectory,
2307 # make sure this directory will exist.
2308 my $dirstamp = require_build_directory_maybe ($onelib);
2309
2310 $output_rules .= &file_contents ('library',
2311 $where,
2312 LIBRARY => $onelib,
2313 XLIBRARY => $xlib,
2314 DIRSTAMP => $dirstamp);
2315
2316 if ($seen_libobjs)
2317 {
2318 if (var ($xlib . '_LIBADD'))
2319 {
2320 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2321 }
2322 }
2323 }
2324}
2325
2326
2327# handle_ltlibraries ()
2328# ---------------------
2329# Handle shared libraries.
2330sub handle_ltlibraries
2331{
2332 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2333 'noinst', 'lib', 'pkglib', 'check');
2334 return if ! @liblist;
2335
2336 my %instdirs;
2337 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2338 'noinst', 'check');
2339
2340 if (@prefix)
2341 {
2342 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2343 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2344 }
2345
2346 my %liblocations = (); # Location (in Makefile.am) of each library.
2347
2348 foreach my $key (@prefix)
2349 {
2350 # Get the installation directory of each library.
2351 (my $dir = $key) =~ s/^nobase_//;
2352 my $var = rvar ($key . '_LTLIBRARIES');
2353 for my $pair ($var->value_as_list_recursive (location => 1))
2354 {
2355 my ($where, $lib) = @$pair;
2356 # We reject libraries which are installed in several places,
2357 # because we don't handle this in the rules (think `-rpath').
2358 #
2359 # However, we allow the same library to be listed many times
2360 # for the same directory. This is for users who need setups
2361 # like
2362 # if COND1
2363 # lib_LTLIBRARIES = libfoo.la
2364 # endif
2365 # if COND2
2366 # lib_LTLIBRARIES = libfoo.la
2367 # endif
2368 #
2369 # Actually this will also allow
2370 # lib_LTLIBRARIES = libfoo.la libfoo.la
2371 # Diagnosing this case doesn't seem worth the plain (we'd
2372 # have to fill $instdirs on a per-condition basis, check
2373 # implied conditions, etc.)
2374 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2375 {
2376 error ($where, "`$lib' is already going to be installed in "
2377 . "`$instdirs{$lib}'", partial => 1);
2378 error ($liblocations{$lib}, "`$lib' previously declared here");
2379 }
2380 else
2381 {
2382 $instdirs{$lib} = $dir;
2383 $liblocations{$lib} = $where->clone;
2384 }
2385 }
2386 }
2387
2388 foreach my $pair (@liblist)
2389 {
2390 my ($where, $onelib) = @$pair;
2391
2392 my $seen_libobjs = 0;
2393 my $obj = &get_object_extension ($onelib);
2394
2395 # Canonicalize names and check for misspellings.
2396 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2397 '_SOURCES', '_OBJECTS',
2398 '_DEPENDENCIES');
2399
2400 # Check that the library fits the standard naming convention.
2401 my $libname_rx = "^lib.*\.la";
2402 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2403 my $ldvar2 = var ('LDFLAGS');
2404 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2405 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2406 {
2407 # Relax name checking for libtool modules.
2408 $libname_rx = "\.la";
2409 }
2410 if (basename ($onelib) !~ /$libname_rx$/)
2411 {
2412 msg ('error-gnu/warn', $where,
2413 "`$onelib' is not a standard libtool library name");
2414 }
2415
2416 $where->push_context ("while processing Libtool library `$onelib'");
2417 $where->set (INTERNAL->get);
2418
2419 # Make sure we at look at these.
2420 set_seen ($xlib . '_LDFLAGS');
2421 set_seen ($xlib . '_DEPENDENCIES');
2422
2423 # Generate support for conditional object inclusion in
2424 # libraries.
2425 if (var ($xlib . '_LIBADD'))
2426 {
2427 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2428 {
2429 $seen_libobjs = 1;
2430 }
2431 }
2432 else
2433 {
2434 &define_variable ($xlib . "_LIBADD", '', $where);
2435 }
2436
2437 reject_var ("${xlib}_LDADD",
2438 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2439
2440
2441 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2442
2443 # Determine program to use for link.
2444 my $xlink;
2445 if (var ($xlib . '_LINK'))
2446 {
2447 $xlink = $xlib . '_LINK';
2448 }
2449 else
2450 {
2451 $xlink = $linker ? $linker : 'LINK';
2452 }
2453
2454 my $rpath;
2455 if ($instdirs{$onelib} eq 'EXTRA'
2456 || $instdirs{$onelib} eq 'noinst'
2457 || $instdirs{$onelib} eq 'check')
2458 {
2459 # It's an EXTRA_ library, so we can't specify -rpath,
2460 # because we don't know where the library will end up.
2461 # The user probably knows, but generally speaking automake
2462 # doesn't -- and in fact configure could decide
2463 # dynamically between two different locations.
2464 $rpath = '';
2465 }
2466 else
2467 {
2468 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2469 }
2470
2471 # If the resulting library lies into a subdirectory,
2472 # make sure this directory will exist.
2473 my $dirstamp = require_build_directory_maybe ($onelib);
2474
2475 # Remember to cleanup .libs/ in this directory.
2476 my $dirname = dirname $onelib;
2477 $libtool_clean_directories{$dirname} = 1;
2478
2479 $output_rules .= &file_contents ('ltlibrary',
2480 $where,
2481 LTLIBRARY => $onelib,
2482 XLTLIBRARY => $xlib,
2483 RPATH => $rpath,
2484 XLINK => $xlink,
2485 DIRSTAMP => $dirstamp);
2486 if ($seen_libobjs)
2487 {
2488 if (var ($xlib . '_LIBADD'))
2489 {
2490 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2491 }
2492 }
2493 }
2494}
2495
2496# See if any _SOURCES variable were misspelled.
2497sub check_typos ()
2498{
2499 # It is ok if the user sets this particular variable.
2500 set_seen 'AM_LDFLAGS';
2501
2502 foreach my $var (variables)
2503 {
2504 my $varname = $var->name;
2505 # A configure variable is always legitimate.
2506 next if exists $configure_vars{$varname};
2507
2508 my $check = 0;
2509 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2510 '_DEPENDENCIES')
2511 {
2512 if ($varname =~ /$primary$/)
2513 {
2514 $check = 1;
2515 last;
2516 }
2517 }
2518 next unless $check;
2519
2520 for my $cond ($var->conditions->conds)
2521 {
2522 msg_var 'syntax', $var, "unused variable: `$varname'"
2523 unless $var->rdef ($cond)->seen;
2524 }
2525 }
2526}
2527
2528
2529# Handle scripts.
2530sub handle_scripts
2531{
2532 # NOTE we no longer automatically clean SCRIPTS, because it is
2533 # useful to sometimes distribute scripts verbatim. This happens
2534 # e.g. in Automake itself.
2535 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2536 'bin', 'sbin', 'libexec', 'pkgdata',
2537 'noinst', 'check');
2538}
2539
2540
2541
2542
2543## ------------------------ ##
2544## Handling Texinfo files. ##
2545## ------------------------ ##
2546
2547# ($OUTFILE, $VFILE, @CLEAN_FILES)
2548# &scan_texinfo_file ($FILENAME)
2549# ------------------------------
2550# $OUTFILE - name of the info file produced by $FILENAME.
2551# $VFILE - name of the version.texi file used (undef if none).
2552# @CLEAN_FILES - list of byproducts (indexes etc.)
2553sub scan_texinfo_file ($)
2554{
2555 my ($filename) = @_;
2556
2557 # Some of the following extensions are always created, no matter
2558 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2559 # are only created when they are used. We used to scan $FILENAME
2560 # for their use, but that is not enough: they could be used in
2561 # included files. We can't scan included files because we don't
2562 # know the include path. Therefore we always erase these files, no
2563 # matter whether they are used or not.
2564 #
2565 # (tmp is only created if an @macro is used and a certain e-TeX
2566 # feature is not available.)
2567 my %clean_suffixes =
2568 map { $_ => 1 } (qw(aux log toc tmp
2569 cp cps
2570 fn fns
2571 ky kys
2572 vr vrs
2573 tp tps
2574 pg pgs)); # grep 'new.*index' texinfo.tex
2575
2576 my $texi = new Automake::XFile "< $filename";
2577 verb "reading $filename";
2578
2579 my ($outfile, $vfile);
2580 while ($_ = $texi->getline)
2581 {
2582 if (/^\@setfilename +(\S+)/)
2583 {
2584 # Honor only the first @setfilename. (It's possible to have
2585 # more occurrences later if the manual shows examples of how
2586 # to use @setfilename...)
2587 next if $outfile;
2588
2589 $outfile = $1;
2590 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2591 {
2592 error ("$filename:$.",
2593 "output `$outfile' has unrecognized extension");
2594 return;
2595 }
2596 }
2597 # A "version.texi" file is actually any file whose name matches
2598 # "vers*.texi".
2599 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2600 {
2601 $vfile = $1;
2602 }
2603
2604 # Try to find new or unused indexes.
2605
2606 # Creating a new category of index.
2607 elsif (/^\@def(code)?index (\w+)/)
2608 {
2609 $clean_suffixes{$2} = 1;
2610 $clean_suffixes{"$2s"} = 1;
2611 }
2612
2613 # Merging an index into an another.
2614 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2615 {
2616 delete $clean_suffixes{"$2s"};
2617 $clean_suffixes{"$3s"} = 1;
2618 }
2619
2620 }
2621
2622 if (! $outfile)
2623 {
2624 err_am "`$filename' missing \@setfilename";
2625 return;
2626 }
2627
2628 my $infobase = basename ($filename);
2629 $infobase =~ s/\.te?xi(nfo)?$//;
2630 return ($outfile, $vfile,
2631 map { "$infobase.$_" } (sort keys %clean_suffixes));
2632}
2633
2634
2635# ($DIRSTAMP, @CLEAN_FILES)
2636# output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2637# ------------------------------------------------------------------
2638# SOURCE - the source Texinfo file
2639# DEST - the destination Info file
2640# INSRC - wether DEST should be built in the source tree
2641# DEPENDENCIES - known dependencies
2642sub output_texinfo_build_rules ($$$@)
2643{
2644 my ($source, $dest, $insrc, @deps) = @_;
2645
2646 # Split `a.texi' into `a' and `.texi'.
2647 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2648 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2649
2650 $ssfx ||= "";
2651 $dsfx ||= "";
2652
2653 # We can output two kinds of rules: the "generic" rules use Make
2654 # suffix rules and are appropriate when $source and $dest do not lie
2655 # in a sub-directory; the "specific" rules are needed in the other
2656 # case.
2657 #
2658 # The former are output only once (this is not really apparent here,
2659 # but just remember that some logic deeper in Automake will not
2660 # output the same rule twice); while the later need to be output for
2661 # each Texinfo source.
2662 my $generic;
2663 my $makeinfoflags;
2664 my $sdir = dirname $source;
2665 if ($sdir eq '.' && dirname ($dest) eq '.')
2666 {
2667 $generic = 1;
2668 $makeinfoflags = '-I $(srcdir)';
2669 }
2670 else
2671 {
2672 $generic = 0;
2673 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2674 }
2675
2676 # A directory can contain two kinds of info files: some built in the
2677 # source tree, and some built in the build tree. The rules are
2678 # different in each case. However we cannot output two different
2679 # set of generic rules. Because in-source builds are more usual, we
2680 # use generic rules in this case and fall back to "specific" rules
2681 # for build-dir builds. (It should not be a problem to invert this
2682 # if needed.)
2683 $generic = 0 unless $insrc;
2684
2685 # We cannot use a suffix rule to build info files with an empty
2686 # extension. Otherwise we would output a single suffix inference
2687 # rule, with separate dependencies, as in
2688 #
2689 # .texi:
2690 # $(MAKEINFO) ...
2691 # foo.info: foo.texi
2692 #
2693 # which confuse Solaris make. (See the Autoconf manual for
2694 # details.) Therefore we use a specific rule in this case. This
2695 # applies to info files only (dvi and pdf files always have an
2696 # extension).
2697 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2698
2699 # If the resulting file lie into a subdirectory,
2700 # make sure this directory will exist.
2701 my $dirstamp = require_build_directory_maybe ($dest);
2702
2703 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2704
2705 $output_rules .= file_contents ('texibuild',
2706 new Automake::Location,
2707 DEPS => "@deps",
2708 DEST_PREFIX => $dpfx,
2709 DEST_INFO_PREFIX => $dipfx,
2710 DEST_SUFFIX => $dsfx,
2711 DIRSTAMP => $dirstamp,
2712 GENERIC => $generic,
2713 GENERIC_INFO => $generic_info,
2714 INSRC => $insrc,
2715 MAKEINFOFLAGS => $makeinfoflags,
2716 SOURCE => ($generic
2717 ? '$<' : $source),
2718 SOURCE_INFO => ($generic_info
2719 ? '$<' : $source),
2720 SOURCE_REAL => $source,
2721 SOURCE_SUFFIX => $ssfx,
2722 );
2723 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2724}
2725
2726
2727# $TEXICLEANS
2728# handle_texinfo_helper ($info_texinfos)
2729# --------------------------------------
2730# Handle all Texinfo source; helper for handle_texinfo.
2731sub handle_texinfo_helper ($)
2732{
2733 my ($info_texinfos) = @_;
2734 my (@infobase, @info_deps_list, @texi_deps);
2735 my %versions;
2736 my $done = 0;
2737 my @texi_cleans;
2738
2739 # Build a regex matching user-cleaned files.
2740 my $d = var 'DISTCLEANFILES';
2741 my $c = var 'CLEANFILES';
2742 my @f = ();
2743 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2744 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2745 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2746 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2747
2748 foreach my $texi
2749 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2750 {
2751 my $infobase = $texi;
2752 $infobase =~ s/\.(txi|texinfo|texi)$//;
2753
2754 if ($infobase eq $texi)
2755 {
2756 # FIXME: report line number.
2757 err_am "texinfo file `$texi' has unrecognized extension";
2758 next;
2759 }
2760
2761 push @infobase, $infobase;
2762
2763 # If 'version.texi' is referenced by input file, then include
2764 # automatic versioning capability.
2765 my ($out_file, $vtexi, @clean_files) =
2766 scan_texinfo_file ("$relative_dir/$texi")
2767 or next;
2768 push (@texi_cleans, @clean_files);
2769
2770 # If the Texinfo source is in a subdirectory, create the
2771 # resulting info in this subdirectory. If it is in the current
2772 # directory, try hard to not prefix "./" because it breaks the
2773 # generic rules.
2774 my $outdir = dirname ($texi) . '/';
2775 $outdir = "" if $outdir eq './';
2776 $out_file = $outdir . $out_file;
2777
2778 # Until Automake 1.6.3, .info files were built in the
2779 # source tree. This was an obstacle to the support of
2780 # non-distributed .info files, and non-distributed .texi
2781 # files.
2782 #
2783 # * Non-distributed .texi files is important in some packages
2784 # where .texi files are built at make time, probably using
2785 # other binaries built in the package itself, maybe using
2786 # tools or information found on the build host. Because
2787 # these files are not distributed they are always rebuilt
2788 # at make time; they should therefore not lie in the source
2789 # directory. One plan was to support this using
2790 # nodist_info_TEXINFOS or something similar. (Doing this
2791 # requires some sanity checks. For instance Automake should
2792 # not allow:
2793 # dist_info_TEXINFO = foo.texi
2794 # nodist_foo_TEXINFO = included.texi
2795 # because a distributed file should never depend on a
2796 # non-distributed file.)
2797 #
2798 # * If .texi files are not distributed, then .info files should
2799 # not be distributed either. There are also cases where one
2800 # want to distribute .texi files, but do not want to
2801 # distribute the .info files. For instance the Texinfo package
2802 # distributes the tool used to build these files; it would
2803 # be a waste of space to distribute them. It's not clear
2804 # which syntax we should use to indicate that .info files should
2805 # not be distributed. Akim Demaille suggested that eventually
2806 # we switch to a new syntax:
2807 # | Maybe we should take some inspiration from what's already
2808 # | done in the rest of Automake. Maybe there is too much
2809 # | syntactic sugar here, and you want
2810 # | nodist_INFO = bar.info
2811 # | dist_bar_info_SOURCES = bar.texi
2812 # | bar_texi_DEPENDENCIES = foo.texi
2813 # | with a bit of magic to have bar.info represent the whole
2814 # | bar*info set. That's a lot more verbose that the current
2815 # | situation, but it is # not new, hence the user has less
2816 # | to learn.
2817 # |
2818 # | But there is still too much room for meaningless specs:
2819 # | nodist_INFO = bar.info
2820 # | dist_bar_info_SOURCES = bar.texi
2821 # | dist_PS = bar.ps something-written-by-hand.ps
2822 # | nodist_bar_ps_SOURCES = bar.texi
2823 # | bar_texi_DEPENDENCIES = foo.texi
2824 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2825 #
2826 # Back to the point, it should be clear that in order to support
2827 # non-distributed .info files, we need to build them in the
2828 # build tree, not in the source tree (non-distributed .texi
2829 # files are less of a problem, because we do not output build
2830 # rules for them). In Automake 1.7 .info build rules have been
2831 # largely cleaned up so that .info files get always build in the
2832 # build tree, even when distributed. The idea was that
2833 # (1) if during a VPATH build the .info file was found to be
2834 # absent or out-of-date (in the source tree or in the
2835 # build tree), Make would rebuild it in the build tree.
2836 # If an up-to-date source-tree of the .info file existed,
2837 # make would not rebuild it in the build tree.
2838 # (2) having two copies of .info files, one in the source tree
2839 # and one (newer) in the build tree is not a problem
2840 # because `make dist' always pick files in the build tree
2841 # first.
2842 # However it turned out the be a bad idea for several reasons:
2843 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
2844 # like GNU Make on point (1) above. These implementations
2845 # of Make would always rebuild .info files in the build
2846 # tree, even if such files were up to date in the source
2847 # tree. Consequently, it was impossible to perform a VPATH
2848 # build of a package containing Texinfo files using these
2849 # Make implementations.
2850 # (Refer to the Autoconf Manual, section "Limitation of
2851 # Make", paragraph "VPATH", item "target lookup", for
2852 # an account of the differences between these
2853 # implementations.)
2854 # * The GNU Coding Standards require these files to be built
2855 # in the source-tree (when they are distributed, that is).
2856 # * Keeping a fresher copy of distributed files in the
2857 # build tree can be annoying during development because
2858 # - if the files is kept under CVS, you really want it
2859 # to be updated in the source tree
2860 # - it is confusing that `make distclean' does not erase
2861 # all files in the build tree.
2862 #
2863 # Consequently, starting with Automake 1.8, .info files are
2864 # built in the source tree again. Because we still plan to
2865 # support non-distributed .info files at some point, we
2866 # have a single variable ($INSRC) that controls whether
2867 # the current .info file must be built in the source tree
2868 # or in the build tree. Actually this variable is switched
2869 # off for .info files that appear to be cleaned; this is
2870 # for backward compatibility with package such as Texinfo,
2871 # which do things like
2872 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2873 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2874 # # Do not create info files for distribution.
2875 # dist-info:
2876 # in order not to distribute .info files.
2877 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2878
2879 my $soutdir = '$(srcdir)/' . $outdir;
2880 $outdir = $soutdir if $insrc;
2881
2882 # If user specified file_TEXINFOS, then use that as explicit
2883 # dependency list.
2884 @texi_deps = ();
2885 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2886
2887 my $canonical = canonicalize ($infobase);
2888 if (var ($canonical . "_TEXINFOS"))
2889 {
2890 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2891 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2892 }
2893
2894 my ($dirstamp, @cfiles) =
2895 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2896 push (@texi_cleans, @cfiles);
2897
2898 push (@info_deps_list, $out_file);
2899
2900 # If a vers*.texi file is needed, emit the rule.
2901 if ($vtexi)
2902 {
2903 err_am ("`$vtexi', included in `$texi', "
2904 . "also included in `$versions{$vtexi}'")
2905 if defined $versions{$vtexi};
2906 $versions{$vtexi} = $texi;
2907
2908 # We number the stamp-vti files. This is doable since the
2909 # actual names don't matter much. We only number starting
2910 # with the second one, so that the common case looks nice.
2911 my $vti = ($done ? $done : 'vti');
2912 ++$done;
2913
2914 # This is ugly, but it is our historical practice.
2915 if ($config_aux_dir_set_in_configure_in)
2916 {
2917 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2918 'mdate-sh');
2919 }
2920 else
2921 {
2922 require_file_with_macro (TRUE, 'info_TEXINFOS',
2923 FOREIGN, 'mdate-sh');
2924 }
2925
2926 my $conf_dir;
2927 if ($config_aux_dir_set_in_configure_in)
2928 {
2929 $conf_dir = $config_aux_dir;
2930 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2931 }
2932 else
2933 {
2934 $conf_dir = '$(srcdir)/';
2935 }
2936 $output_rules .= file_contents ('texi-vers',
2937 new Automake::Location,
2938 TEXI => $texi,
2939 VTI => $vti,
2940 STAMPVTI => "${soutdir}stamp-$vti",
2941 VTEXI => "$soutdir$vtexi",
2942 MDDIR => $conf_dir,
2943 DIRSTAMP => $dirstamp);
2944 }
2945 }
2946
2947 # Handle location of texinfo.tex.
2948 my $need_texi_file = 0;
2949 my $texinfodir;
2950 if (var ('TEXINFO_TEX'))
2951 {
2952 # The user defined TEXINFO_TEX so assume he knows what he is
2953 # doing.
2954 $texinfodir = ('$(srcdir)/'
2955 . dirname (variable_value ('TEXINFO_TEX')));
2956 }
2957 elsif (option 'cygnus')
2958 {
2959 $texinfodir = '$(top_srcdir)/../texinfo';
2960 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2961 }
2962 elsif ($config_aux_dir_set_in_configure_in)
2963 {
2964 $texinfodir = $config_aux_dir;
2965 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2966 $need_texi_file = 2; # so that we require_conf_file later
2967 }
2968 else
2969 {
2970 $texinfodir = '$(srcdir)';
2971 $need_texi_file = 1;
2972 }
2973 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2974
2975 push (@dist_targets, 'dist-info');
2976
2977 if (! option 'no-installinfo')
2978 {
2979 # Make sure documentation is made and installed first. Use
2980 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2981 # get run twice during "make all".
2982 unshift (@all, '$(INFO_DEPS)');
2983 }
2984
2985 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2986 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2987 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2988 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2989
2990 # This next isn't strictly needed now -- the places that look here
2991 # could easily be changed to look in info_TEXINFOS. But this is
2992 # probably better, in case noinst_TEXINFOS is ever supported.
2993 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2994
2995 # Do some error checking. Note that this file is not required
2996 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2997 # up above.
2998 if ($need_texi_file && ! option 'no-texinfo.tex')
2999 {
3000 if ($need_texi_file > 1)
3001 {
3002 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3003 'texinfo.tex');
3004 }
3005 else
3006 {
3007 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3008 'texinfo.tex');
3009 }
3010 }
3011
3012 return makefile_wrap ("", "\t ", @texi_cleans);
3013}
3014
3015
3016# handle_texinfo ()
3017# -----------------
3018# Handle all Texinfo source.
3019sub handle_texinfo ()
3020{
3021 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3022 # FIXME: I think this is an obsolete future feature name.
3023 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3024
3025 my $info_texinfos = var ('info_TEXINFOS');
3026 my $texiclean = "";
3027 if ($info_texinfos)
3028 {
3029 $texiclean = handle_texinfo_helper ($info_texinfos);
3030 }
3031 $output_rules .= file_contents ('texinfos',
3032 new Automake::Location,
3033 TEXICLEAN => $texiclean,
3034 'LOCAL-TEXIS' => !!$info_texinfos);
3035}
3036
3037
3038# Handle any man pages.
3039sub handle_man_pages
3040{
3041 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3042
3043 # Find all the sections in use. We do this by first looking for
3044 # "standard" sections, and then looking for any additional
3045 # sections used in man_MANS.
3046 my (%sections, %vlist);
3047 # We handle nodist_ for uniformity. man pages aren't distributed
3048 # by default so it isn't actually very important.
3049 foreach my $pfx ('', 'dist_', 'nodist_')
3050 {
3051 # Add more sections as needed.
3052 foreach my $section ('0'..'9', 'n', 'l')
3053 {
3054 my $varname = $pfx . 'man' . $section . '_MANS';
3055 if (var ($varname))
3056 {
3057 $sections{$section} = 1;
3058 $varname = '$(' . $varname . ')';
3059 $vlist{$varname} = 1;
3060
3061 &push_dist_common ($varname)
3062 if $pfx eq 'dist_';
3063 }
3064 }
3065
3066 my $varname = $pfx . 'man_MANS';
3067 my $var = var ($varname);
3068 if ($var)
3069 {
3070 foreach ($var->value_as_list_recursive)
3071 {
3072 # A page like `foo.1c' goes into man1dir.
3073 if (/\.([0-9a-z])([a-z]*)$/)
3074 {
3075 $sections{$1} = 1;
3076 }
3077 }
3078
3079 $varname = '$(' . $varname . ')';
3080 $vlist{$varname} = 1;
3081 &push_dist_common ($varname)
3082 if $pfx eq 'dist_';
3083 }
3084 }
3085
3086 return unless %sections;
3087
3088 # Now for each section, generate an install and uninstall rule.
3089 # Sort sections so output is deterministic.
3090 foreach my $section (sort keys %sections)
3091 {
3092 $output_rules .= &file_contents ('mans',
3093 new Automake::Location,
3094 SECTION => $section);
3095 }
3096
3097 my @mans = sort keys %vlist;
3098 $output_vars .= file_contents ('mans-vars',
3099 new Automake::Location,
3100 MANS => "@mans");
3101
3102 push (@all, '$(MANS)')
3103 unless option 'no-installman';
3104}
3105
3106# Handle DATA variables.
3107sub handle_data
3108{
3109 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3110 'data', 'sysconf', 'sharedstate', 'localstate',
3111 'pkgdata', 'lisp', 'noinst', 'check');
3112}
3113
3114# Handle TAGS.
3115sub handle_tags
3116{
3117 my @tag_deps = ();
3118 my @ctag_deps = ();
3119 if (var ('SUBDIRS'))
3120 {
3121 $output_rules .= ("tags-recursive:\n"
3122 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3123 # Never fail here if a subdir fails; it
3124 # isn't important.
3125 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3126 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3127 . "\tdone\n");
3128 push (@tag_deps, 'tags-recursive');
3129 &depend ('.PHONY', 'tags-recursive');
3130
3131 $output_rules .= ("ctags-recursive:\n"
3132 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3133 # Never fail here if a subdir fails; it
3134 # isn't important.
3135 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3136 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3137 . "\tdone\n");
3138 push (@ctag_deps, 'ctags-recursive');
3139 &depend ('.PHONY', 'ctags-recursive');
3140 }
3141
3142 if (&saw_sources_p (1)
3143 || var ('ETAGS_ARGS')
3144 || @tag_deps)
3145 {
3146 my @config;
3147 foreach my $spec (@config_headers)
3148 {
3149 my ($out, @ins) = split_config_file_spec ($spec);
3150 foreach my $in (@ins)
3151 {
3152 # If the config header source is in this directory,
3153 # require it.
3154 push @config, basename ($in)
3155 if $relative_dir eq dirname ($in);
3156 }
3157 }
3158 $output_rules .= &file_contents ('tags',
3159 new Automake::Location,
3160 CONFIG => "@config",
3161 TAGSDIRS => "@tag_deps",
3162 CTAGSDIRS => "@ctag_deps");
3163
3164 set_seen 'TAGS_DEPENDENCIES';
3165 }
3166 elsif (reject_var ('TAGS_DEPENDENCIES',
3167 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3168 . "without\nsources or `ETAGS_ARGS'"))
3169 {
3170 }
3171 else
3172 {
3173 # Every Makefile must define some sort of TAGS rule.
3174 # Otherwise, it would be possible for a top-level "make TAGS"
3175 # to fail because some subdirectory failed.
3176 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3177 # Ditto ctags.
3178 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3179 }
3180}
3181
3182# Handle multilib support.
3183sub handle_multilib
3184{
3185 if ($seen_multilib && $relative_dir eq '.')
3186 {
3187 $output_rules .= &file_contents ('multilib', new Automake::Location);
3188 push (@all, 'all-multi');
3189 }
3190}
3191
3192
3193# $BOOLEAN
3194# &for_dist_common ($A, $B)
3195# -------------------------
3196# Subroutine for &handle_dist: sort files to dist.
3197#
3198# We put README first because it then becomes easier to make a
3199# Usenet-compliant shar file (in these, README must be first).
3200#
3201# FIXME: do more ordering of files here.
3202sub for_dist_common
3203{
3204 return 0
3205 if $a eq $b;
3206 return -1
3207 if $a eq 'README';
3208 return 1
3209 if $b eq 'README';
3210 return $a cmp $b;
3211}
3212
3213
3214# handle_dist
3215# -----------
3216# Handle 'dist' target.
3217sub handle_dist ()
3218{
3219 # Substutions for distdit.am
3220 my %transform;
3221
3222 # Define DIST_SUBDIRS. This must always be done, regardless of the
3223 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3224 my $subdirs = var ('SUBDIRS');
3225 if ($subdirs)
3226 {
3227 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3228 # to all possible directories, and use it. If DIST_SUBDIRS is
3229 # defined, just use it.
3230 my $dist_subdir_name;
3231 # Note that we check DIST_SUBDIRS first on purpose, so that
3232 # we don't call has_conditional_contents for now reason.
3233 # (In the past one project used so many conditional subdirectories
3234 # that calling has_conditional_contents on SUBDIRS caused
3235 # automake to grow to 150Mb -- this should not happen with
3236 # the current implementation of has_conditional_contents,
3237 # but it's more efficient to avoid the call anyway.)
3238 if (var ('DIST_SUBDIRS'))
3239 {
3240 $dist_subdir_name = 'DIST_SUBDIRS';
3241 }
3242 elsif ($subdirs->has_conditional_contents)
3243 {
3244 $dist_subdir_name = 'DIST_SUBDIRS';
3245 define_pretty_variable
3246 ('DIST_SUBDIRS', TRUE, INTERNAL,
3247 uniq ($subdirs->value_as_list_recursive));
3248 }
3249 else
3250 {
3251 $dist_subdir_name = 'SUBDIRS';
3252 # We always define this because that is what `distclean'
3253 # wants.
3254 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3255 '$(SUBDIRS)');
3256 }
3257
3258 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3259 }
3260
3261 # The remaining definitions are only required when a dist target is used.
3262 return if option 'no-dist';
3263
3264 # At least one of the archive formats must be enabled.
3265 if ($relative_dir eq '.')
3266 {
3267 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3268 $archive_defined ||=
3269 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3270 error (option 'no-dist-gzip',
3271 "no-dist-gzip specified but no dist-* specified, "
3272 . "at least one archive format must be enabled")
3273 unless $archive_defined;
3274 }
3275
3276 # Look for common files that should be included in distribution.
3277 # If the aux dir is set, and it does not have a Makefile.am, then
3278 # we check for these files there as well.
3279 my $check_aux = 0;
3280 my $auxdir = '';
3281 if ($relative_dir eq '.'
3282 && $config_aux_dir_set_in_configure_in)
3283 {
3284 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3285 if (! &is_make_dir ($auxdir))
3286 {
3287 $check_aux = 1;
3288 }
3289 }
3290 foreach my $cfile (@common_files)
3291 {
3292 if (-f ($relative_dir . "/" . $cfile)
3293 # The file might be absent, but if it can be built it's ok.
3294 || rule $cfile)
3295 {
3296 &push_dist_common ($cfile);
3297 }
3298
3299 # Don't use `elsif' here because a file might meaningfully
3300 # appear in both directories.
3301 if ($check_aux && -f ($auxdir . '/' . $cfile))
3302 {
3303 &push_dist_common ($auxdir . '/' . $cfile);
3304 }
3305 }
3306
3307 # We might copy elements from $configure_dist_common to
3308 # %dist_common if we think we need to. If the file appears in our
3309 # directory, we would have discovered it already, so we don't
3310 # check that. But if the file is in a subdir without a Makefile,
3311 # we want to distribute it here if we are doing `.'. Ugly!
3312 if ($relative_dir eq '.')
3313 {
3314 foreach my $file (split (' ' , $configure_dist_common))
3315 {
3316 push_dist_common ($file)
3317 unless is_make_dir (dirname ($file));
3318 }
3319 }
3320
3321 # Files to distributed. Don't use ->value_as_list_recursive
3322 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3323 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3324 @dist_common = uniq (sort for_dist_common (@dist_common));
3325 variable_delete 'DIST_COMMON';
3326 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3327
3328 # Now that we've processed DIST_COMMON, disallow further attempts
3329 # to set it.
3330 $handle_dist_run = 1;
3331
3332 # Scan EXTRA_DIST to see if we need to distribute anything from a
3333 # subdir. If so, add it to the list. I didn't want to do this
3334 # originally, but there were so many requests that I finally
3335 # relented.
3336 my $extra_dist = var ('EXTRA_DIST');
3337 if ($extra_dist)
3338 {
3339 # FIXME: This should be fixed to work with conditions. That
3340 # will require only making the entries in %dist_dirs under the
3341 # appropriate condition. This is meaningful if the nature of
3342 # the distribution should depend upon the configure options
3343 # used.
3344 foreach ($extra_dist->value_as_list_recursive)
3345 {
3346 next if /^\@.*\@$/;
3347 next unless s,/+[^/]+$,,;
3348 $dist_dirs{$_} = 1
3349 unless $_ eq '.';
3350 }
3351 }
3352
3353 # We have to check DIST_COMMON for extra directories in case the
3354 # user put a source used in AC_OUTPUT into a subdir.
3355 my $topsrcdir = backname ($relative_dir);
3356 foreach (rvar ('DIST_COMMON')->value_as_list_recursive)
3357 {
3358 next if /^\@.*\@$/;
3359 s/\$\(top_srcdir\)/$topsrcdir/;
3360 s/\$\(srcdir\)/./;
3361 # Strip any leading `./'.
3362 s,^(:?\./+)*,,;
3363 next unless s,/+[^/]+$,,;
3364 $dist_dirs{$_} = 1
3365 unless $_ eq '.';
3366 }
3367
3368 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3369 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3370
3371 # Prepend $(distdir) to each directory given.
3372 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3373 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3374
3375 # If the target `dist-hook' exists, make sure it is run. This
3376 # allows users to do random weird things to the distribution
3377 # before it is packaged up.
3378 push (@dist_targets, 'dist-hook')
3379 if rule 'dist-hook';
3380 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3381
3382 $output_rules .= &file_contents ('distdir',
3383 new Automake::Location,
3384 %transform);
3385}
3386
3387
3388# &handle_subdirs ()
3389# ------------------
3390# Handle subdirectories.
3391sub handle_subdirs ()
3392{
3393 my $subdirs = var ('SUBDIRS');
3394 return
3395 unless $subdirs;
3396
3397 my @subdirs = $subdirs->value_as_list_recursive;
3398 my @dsubdirs = ();
3399 my $dsubdirs = var ('DIST_SUBDIRS');
3400 @dsubdirs = $dsubdirs->value_as_list_recursive
3401 if $dsubdirs;
3402
3403 # If an `obj/' directory exists, BSD make will enter it before
3404 # reading `Makefile'. Hence the `Makefile' in the current directory
3405 # will not be read.
3406 #
3407 # % cat Makefile
3408 # all:
3409 # echo Hello
3410 # % cat obj/Makefile
3411 # all:
3412 # echo World
3413 # % make # GNU make
3414 # echo Hello
3415 # Hello
3416 # % pmake # BSD make
3417 # echo World
3418 # World
3419 msg_var ('portability', 'SUBDIRS',
3420 "naming a subdirectory `obj' causes troubles with BSD make")
3421 if grep ($_ eq 'obj', @subdirs);
3422 msg_var ('portability', 'DIST_SUBDIRS',
3423 "naming a subdirectory `obj' causes troubles with BSD make")
3424 if grep ($_ eq 'obj', @dsubdirs);
3425
3426 # Make sure each directory mentioned in SUBDIRS actually exists.
3427 foreach my $dir (@subdirs)
3428 {
3429 # Skip directories substituted by configure.
3430 next if $dir =~ /^\@.*\@$/;
3431
3432 if (! -d $relative_dir . '/' . $dir)
3433 {
3434 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3435 . "does not exist");
3436 next;
3437 }
3438
3439 err_var 'SUBDIRS', "directory should not contain `/'"
3440 if $dir =~ /\//;
3441 }
3442
3443 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3444 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3445}
3446
3447
3448# ($REGEN, @DEPENDENCIES)
3449# &scan_aclocal_m4
3450# ----------------
3451# If aclocal.m4 creation is automated, return the list of its dependencies.
3452sub scan_aclocal_m4 ()
3453{
3454 my $regen_aclocal = 0;
3455
3456 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3457 set_seen 'CONFIGURE_DEPENDENCIES';
3458
3459 if (-f 'aclocal.m4')
3460 {
3461 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3462
3463 my $aclocal = new Automake::XFile "< aclocal.m4";
3464 my $line = $aclocal->getline;
3465 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3466 }
3467
3468 my @ac_deps = ();
3469
3470 if (set_seen ('ACLOCAL_M4_SOURCES'))
3471 {
3472 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3473 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3474 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3475 . "It should be safe to simply remove it.");
3476 }
3477
3478 # Note that it might be possible that aclocal.m4 doesn't exist but
3479 # should be auto-generated. This case probably isn't very
3480 # important.
3481
3482 return ($regen_aclocal, @ac_deps);
3483}
3484
3485
3486# @DEPENDENCIES
3487# &prepend_srcdir (@INPUTS)
3488# -------------------------
3489# Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3490# if an input file has a directory part the same as the current
3491# directory, then the directory part is simply replaced by $(srcdir).
3492# But if the directory part is different, then $(top_srcdir) is
3493# prepended.
3494sub prepend_srcdir (@)
3495{
3496 my (@inputs) = @_;
3497 my @newinputs;
3498
3499 foreach my $single (@inputs)
3500 {
3501 if (dirname ($single) eq $relative_dir)
3502 {
3503 push (@newinputs, '$(srcdir)/' . basename ($single));
3504 }
3505 else
3506 {
3507 push (@newinputs, '$(top_srcdir)/' . $single);
3508 }
3509 }
3510 return @newinputs;
3511}
3512
3513# @DEPENDENCIES
3514# rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3515# ---------------------------------------------------
3516# Compute a list of dependencies appropriate for the rebuild
3517# rule of
3518# AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3519# Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3520sub rewrite_inputs_into_dependencies ($@)
3521{
3522 my ($file, @inputs) = @_;
3523 my @res = ();
3524
3525 for my $i (@inputs)
3526 {
3527 if (exists $ac_config_files_location{$i})
3528 {
3529 my $di = dirname $i;
3530 if ($di eq $relative_dir)
3531 {
3532 $i = basename $i;
3533 }
3534 # In the top-level Makefile we do not use $(top_builddir), because
3535 # we are already there, and since the targets are built without
3536 # a $(top_builddir), it helps BSD Make to match them with
3537 # dependencies.
3538 elsif ($relative_dir ne '.')
3539 {
3540 $i = '$(top_builddir)/' . $i;
3541 }
3542 }
3543 else
3544 {
3545 msg ('error', $ac_config_files_location{$file},
3546 "required file `$i' not found")
3547 unless exists $output_files{$i} || -f $i;
3548 ($i) = prepend_srcdir ($i);
3549 push_dist_common ($i);
3550 }
3551 push @res, $i;
3552 }
3553 return @res;
3554}
3555
3556
3557
3558# &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3559# ------------------------------------------------------------------
3560# Handle remaking and configure stuff.
3561# We need the name of the input file, to do proper remaking rules.
3562sub handle_configure ($$$@)
3563{
3564 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3565
3566 prog_error 'empty @inputs'
3567 unless @inputs;
3568
3569 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3570 $makefile_in);
3571 my $rel_makefile = basename $makefile;
3572
3573 my $colon_infile = ':' . join (':', @inputs);
3574 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3575 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3576 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3577 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3578 @configure_deps, @aclocal_m4_deps,
3579 '$(top_srcdir)/' . $configure_ac);
3580 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3581 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3582 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3583 @configuredeps);
3584
3585 $output_rules .= file_contents
3586 ('configure',
3587 new Automake::Location,
3588 MAKEFILE => $rel_makefile,
3589 'MAKEFILE-DEPS' => "@rewritten",
3590 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3591 'MAKEFILE-IN' => $rel_makefile_in,
3592 'MAKEFILE-IN-DEPS' => "@include_stack",
3593 'MAKEFILE-AM' => $rel_makefile_am,
3594 STRICTNESS => global_option 'cygnus'
3595 ? 'cygnus' : $strictness_name,
3596 'USE-DEPS' => global_option 'no-dependencies'
3597 ? ' --ignore-deps' : '',
3598 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3599 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3600
3601 if ($relative_dir eq '.')
3602 {
3603 &push_dist_common ('acconfig.h')
3604 if -f 'acconfig.h';
3605 }
3606
3607 # If we have a configure header, require it.
3608 my $hdr_index = 0;
3609 my @distclean_config;
3610 foreach my $spec (@config_headers)
3611 {
3612 $hdr_index += 1;
3613 # $CONFIG_H_PATH: config.h from top level.
3614 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3615 my $config_h_dir = dirname ($config_h_path);
3616
3617 # If the header is in the current directory we want to build
3618 # the header here. Otherwise, if we're at the topmost
3619 # directory and the header's directory doesn't have a
3620 # Makefile, then we also want to build the header.
3621 if ($relative_dir eq $config_h_dir
3622 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3623 {
3624 my ($cn_sans_dir, $stamp_dir);
3625 if ($relative_dir eq $config_h_dir)
3626 {
3627 $cn_sans_dir = basename ($config_h_path);
3628 $stamp_dir = '';
3629 }
3630 else
3631 {
3632 $cn_sans_dir = $config_h_path;
3633 if ($config_h_dir eq '.')
3634 {
3635 $stamp_dir = '';
3636 }
3637 else
3638 {
3639 $stamp_dir = $config_h_dir . '/';
3640 }
3641 }
3642
3643 # This will also distribute all inputs.
3644 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3645
3646 # Header defined and in this directory.
3647 my @files;
3648 if (-f $config_h_path . '.top')
3649 {
3650 push (@files, "$cn_sans_dir.top");
3651 }
3652 if (-f $config_h_path . '.bot')
3653 {
3654 push (@files, "$cn_sans_dir.bot");
3655 }
3656
3657 push_dist_common (@files);
3658
3659 # For now, acconfig.h can only appear in the top srcdir.
3660 if (-f 'acconfig.h')
3661 {
3662 push (@files, '$(top_srcdir)/acconfig.h');
3663 }
3664
3665 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3666 $output_rules .=
3667 file_contents ('remake-hdr',
3668 new Automake::Location,
3669 FILES => "@files",
3670 CONFIG_H => $cn_sans_dir,
3671 CONFIG_HIN => $ins[0],
3672 CONFIG_H_DEPS => "@ins",
3673 CONFIG_H_PATH => $config_h_path,
3674 FIRST_CONFIG_HIN => ($hdr_index == 1),
3675 STAMP => "$stamp");
3676
3677 push @distclean_config, $cn_sans_dir, $stamp;
3678 }
3679 }
3680
3681 $output_rules .= file_contents ('clean-hdr',
3682 new Automake::Location,
3683 FILES => "@distclean_config")
3684 if @distclean_config;
3685
3686 # Distribute and define mkinstalldirs only if it is already present
3687 # in the package, for backward compatibility (some people my still
3688 # use $(mkinstalldirs)).
3689 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3690 if (-f $mkidpath)
3691 {
3692 # Use require_file so that any existingscript gets updated
3693 # by --force-missing.
3694 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3695 define_variable ('mkinstalldirs',
3696 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3697 }
3698 else
3699 {
3700 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3701 }
3702
3703 reject_var ('CONFIG_HEADER',
3704 "`CONFIG_HEADER' is an anachronism; now determined "
3705 . "automatically\nfrom `$configure_ac'");
3706
3707 my @config_h;
3708 foreach my $spec (@config_headers)
3709 {
3710 my ($out, @ins) = split_config_file_spec ($spec);
3711 # Generate CONFIG_HEADER define.
3712 if ($relative_dir eq dirname ($out))
3713 {
3714 push @config_h, basename ($out);
3715 }
3716 else
3717 {
3718 push @config_h, "\$(top_builddir)/$out";
3719 }
3720 }
3721 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3722 if @config_h;
3723
3724 # Now look for other files in this directory which must be remade
3725 # by config.status, and generate rules for them.
3726 my @actual_other_files = ();
3727 foreach my $lfile (@other_input_files)
3728 {
3729 my $file;
3730 my @inputs;
3731 if ($lfile =~ /^([^:]*):(.*)$/)
3732 {
3733 # This is the ":" syntax of AC_OUTPUT.
3734 $file = $1;
3735 @inputs = split (':', $2);
3736 }
3737 else
3738 {
3739 # Normal usage.
3740 $file = $lfile;
3741 @inputs = $file . '.in';
3742 }
3743
3744 # Automake files should not be stored in here, but in %MAKE_LIST.
3745 prog_error ("$lfile in \@other_input_files\n"
3746 . "\@other_input_files = (@other_input_files)")
3747 if -f $file . '.am';
3748
3749 my $local = basename ($file);
3750
3751 # Make sure the dist directory for each input file is created.
3752 # We only have to do this at the topmost level though. This
3753 # is a bit ugly but it easier than spreading out the logic,
3754 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3755 # there is no Makefile in bar/.
3756 if ($relative_dir eq '.')
3757 {
3758 foreach (@inputs)
3759 {
3760 $dist_dirs{dirname ($_)} = 1;
3761 }
3762 }
3763
3764 # We skip files that aren't in this directory. However, if
3765 # the file's directory does not have a Makefile, and we are
3766 # currently doing `.', then we create a rule to rebuild the
3767 # file in the subdir.
3768 my $fd = dirname ($file);
3769 if ($fd ne $relative_dir)
3770 {
3771 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3772 {
3773 $local = $file;
3774 }
3775 else
3776 {
3777 next;
3778 }
3779 }
3780
3781 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3782
3783 $output_rules .= ($local . ': '
3784 . '$(top_builddir)/config.status '
3785 . "@rewritten_inputs\n"
3786 . "\t"
3787 . 'cd $(top_builddir) && '
3788 . '$(SHELL) ./config.status '
3789 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3790 . '$@'
3791 . "\n");
3792 push (@actual_other_files, $local);
3793 }
3794
3795 # For links we should clean destinations and distribute sources.
3796 foreach my $spec (@config_links)
3797 {
3798 my ($link, $file) = split /:/, $spec;
3799 # Some people do AC_CONFIG_LINKS($computed). We only handle
3800 # the DEST:SRC form.
3801 next unless $file;
3802 my $where = $ac_config_files_location{$link};
3803
3804 # Skip destinations that contain shell variables.
3805 if ($link !~ /\$/)
3806 {
3807 # We skip links that aren't in this directory. However, if
3808 # the link's directory does not have a Makefile, and we are
3809 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3810 # in `.'s Makefile.in.
3811 my $local = basename ($link);
3812 my $fd = dirname ($link);
3813 if ($fd ne $relative_dir)
3814 {
3815 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3816 {
3817 $local = $link;
3818 }
3819 else
3820 {
3821 $local = undef;
3822 }
3823 }
3824 push @actual_other_files, $local if $local;
3825 }
3826
3827 # Do not process sources that contain shell variables.
3828 if ($file !~ /\$/)
3829 {
3830 my $fd = dirname ($file);
3831
3832 # Make sure the dist directory for each input file is created.
3833 # We only have to do this at the topmost level though.
3834 if ($relative_dir eq '.')
3835 {
3836 $dist_dirs{$fd} = 1;
3837 }
3838
3839 # We distribute files that are in this directory.
3840 # At the top-level (`.') we also distribute files whose
3841 # directory does not have a Makefile.
3842 if (($fd eq $relative_dir)
3843 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3844 {
3845 # The following will distribute $file as a side-effect when
3846 # it is appropriate (i.e., when $file is not already an output).
3847 # We do not need the result, just the side-effect.
3848 rewrite_inputs_into_dependencies ($link, $file);
3849 }
3850 }
3851 }
3852
3853 # These files get removed by "make distclean".
3854 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3855 @actual_other_files);
3856}
3857
3858# Handle C headers.
3859sub handle_headers
3860{
3861 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3862 'oldinclude', 'pkginclude',
3863 'noinst', 'check');
3864 foreach (@r)
3865 {
3866 next unless $_->[1] =~ /\..*$/;
3867 &saw_extension ($&);
3868 }
3869}
3870
3871sub handle_gettext
3872{
3873 return if ! $seen_gettext || $relative_dir ne '.';
3874
3875 my $subdirs = var 'SUBDIRS';
3876
3877 if (! $subdirs)
3878 {
3879 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3880 return;
3881 }
3882
3883 # Perform some sanity checks to help users get the right setup.
3884 # We disable these tests when po/ doesn't exist in order not to disallow
3885 # unusual gettext setups.
3886 #
3887 # Bruno Haible:
3888 # | The idea is:
3889 # |
3890 # | 1) If a package doesn't have a directory po/ at top level, it
3891 # | will likely have multiple po/ directories in subpackages.
3892 # |
3893 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3894 # | is used without 'external'. It is also useful to warn for the
3895 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3896 # | warnings apply only to the usual layout of packages, therefore
3897 # | they should both be disabled if no po/ directory is found at
3898 # | top level.
3899
3900 if (-d 'po')
3901 {
3902 my @subdirs = $subdirs->value_as_list_recursive;
3903
3904 msg_var ('syntax', $subdirs,
3905 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3906 if ! grep ($_ eq 'po', @subdirs);
3907
3908 # intl/ is not required when AM_GNU_GETTEXT is called with
3909 # the `external' option.
3910 msg_var ('syntax', $subdirs,
3911 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3912 if (! $seen_gettext_external
3913 && ! grep ($_ eq 'intl', @subdirs));
3914
3915 # intl/ should not be used with AM_GNU_GETTEXT([external])
3916 msg_var ('syntax', $subdirs,
3917 "`intl' should not be in SUBDIRS when "
3918 . "AM_GNU_GETTEXT([external]) is used")
3919 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3920 }
3921
3922 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3923}
3924
3925# Handle footer elements.
3926sub handle_footer
3927{
3928 # NOTE don't use define_pretty_variable here, because
3929 # $contents{...} is already defined.
3930 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3931 if variable_value ('SOURCES');
3932
3933 reject_rule ('.SUFFIXES',
3934 "use variable `SUFFIXES', not target `.SUFFIXES'");
3935
3936 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3937 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3938 # anything else, by sticking it right after the default: target.
3939 $output_header .= ".SUFFIXES:\n";
3940 my $suffixes = var 'SUFFIXES';
3941 my @suffixes = Automake::Rule::suffixes;
3942 if (@suffixes || $suffixes)
3943 {
3944 # Make sure SUFFIXES has unique elements. Sort them to ensure
3945 # the output remains consistent. However, $(SUFFIXES) is
3946 # always at the start of the list, unsorted. This is done
3947 # because make will choose rules depending on the ordering of
3948 # suffixes, and this lets the user have some control. Push
3949 # actual suffixes, and not $(SUFFIXES). Some versions of make
3950 # do not like variable substitutions on the .SUFFIXES line.
3951 my @user_suffixes = ($suffixes
3952 ? $suffixes->value_as_list_recursive : ());
3953
3954 my %suffixes = map { $_ => 1 } @suffixes;
3955 delete @suffixes{@user_suffixes};
3956
3957 $output_header .= (".SUFFIXES: "
3958 . join (' ', @user_suffixes, sort keys %suffixes)
3959 . "\n");
3960 }
3961
3962 $output_trailer .= file_contents ('footer', new Automake::Location);
3963}
3964
3965
3966# Generate `make install' rules.
3967sub handle_install ()
3968{
3969 $output_rules .= &file_contents
3970 ('install',
3971 new Automake::Location,
3972 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3973 ? (" \$(BUILT_SOURCES)\n"
3974 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3975 : ''),
3976 'installdirs-local' => (rule 'installdirs-local'
3977 ? ' installdirs-local' : ''),
3978 am__installdirs => variable_value ('am__installdirs') || '');
3979}
3980
3981
3982# Deal with all and all-am.
3983sub handle_all ($)
3984{
3985 my ($makefile) = @_;
3986
3987 # Output `all-am'.
3988
3989 # Put this at the beginning for the sake of non-GNU makes. This
3990 # is still wrong if these makes can run parallel jobs. But it is
3991 # right enough.
3992 unshift (@all, basename ($makefile));
3993
3994 foreach my $spec (@config_headers)
3995 {
3996 my ($out, @ins) = split_config_file_spec ($spec);
3997 push (@all, basename ($out))
3998 if dirname ($out) eq $relative_dir;
3999 }
4000
4001 # Install `all' hooks.
4002 if (rule "all-local")
4003 {
4004 push (@all, "all-local");
4005 &depend ('.PHONY', "all-local");
4006 }
4007
4008 &pretty_print_rule ("all-am:", "\t\t", @all);
4009 &depend ('.PHONY', 'all-am', 'all');
4010
4011
4012 # Output `all'.
4013
4014 my @local_headers = ();
4015 push @local_headers, '$(BUILT_SOURCES)'
4016 if var ('BUILT_SOURCES');
4017 foreach my $spec (@config_headers)
4018 {
4019 my ($out, @ins) = split_config_file_spec ($spec);
4020 push @local_headers, basename ($out)
4021 if dirname ($out) eq $relative_dir;
4022 }
4023
4024 if (@local_headers)
4025 {
4026 # We need to make sure config.h is built before we recurse.
4027 # We also want to make sure that built sources are built
4028 # before any ordinary `all' targets are run. We can't do this
4029 # by changing the order of dependencies to the "all" because
4030 # that breaks when using parallel makes. Instead we handle
4031 # things explicitly.
4032 $output_all .= ("all: @local_headers"
4033 . "\n\t"
4034 . '$(MAKE) $(AM_MAKEFLAGS) '
4035 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4036 . "\n\n");
4037 }
4038 else
4039 {
4040 $output_all .= "all: " . (var ('SUBDIRS')
4041 ? 'all-recursive' : 'all-am') . "\n\n";
4042 }
4043}
4044
4045
4046# &do_check_merge_target ()
4047# -------------------------
4048# Handle check merge target specially.
4049sub do_check_merge_target ()
4050{
4051 if (rule 'check-local')
4052 {
4053 # User defined local form of target. So include it.
4054 push @check_tests, 'check-local';
4055 depend '.PHONY', 'check-local';
4056 }
4057
4058 # In --cygnus mode, check doesn't depend on all.
4059 if (option 'cygnus')
4060 {
4061 # Just run the local check rules.
4062 pretty_print_rule ('check-am:', "\t\t", @check);
4063 }
4064 else
4065 {
4066 # The check target must depend on the local equivalent of
4067 # `all', to ensure all the primary targets are built. Then it
4068 # must build the local check rules.
4069 $output_rules .= "check-am: all-am\n";
4070 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4071 @check)
4072 if @check;
4073 }
4074 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4075 @check_tests)
4076 if @check_tests;
4077
4078 depend '.PHONY', 'check', 'check-am';
4079 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4080 $output_rules .= ("check: "
4081 . (var ('BUILT_SOURCES')
4082 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4083 : '')
4084 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4085 . "\n");
4086}
4087
4088# handle_clean ($MAKEFILE)
4089# ------------------------
4090# Handle all 'clean' targets.
4091sub handle_clean ($)
4092{
4093 my ($makefile) = @_;
4094
4095 # Clean the files listed in user variables if they exist.
4096 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4097 if var ('MOSTLYCLEANFILES');
4098 $clean_files{'$(CLEANFILES)'} = CLEAN
4099 if var ('CLEANFILES');
4100 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4101 if var ('DISTCLEANFILES');
4102 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4103 if var ('MAINTAINERCLEANFILES');
4104
4105 # Built sources are automatically removed by maintainer-clean.
4106 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4107 if var ('BUILT_SOURCES');
4108
4109 # Compute a list of "rm"s to run for each target.
4110 my %rms = (MOSTLY_CLEAN, [],
4111 CLEAN, [],
4112 DIST_CLEAN, [],
4113 MAINTAINER_CLEAN, []);
4114
4115 foreach my $file (keys %clean_files)
4116 {
4117 my $when = $clean_files{$file};
4118 prog_error 'invalid entry in %clean_files'
4119 unless exists $rms{$when};
4120
4121 my $rm = "rm -f $file";
4122 # If file is a variable, make sure when don't call `rm -f' without args.
4123 $rm ="test -z \"$file\" || $rm"
4124 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4125
4126 push @{$rms{$when}}, "\t-$rm\n";
4127 }
4128
4129 $output_rules .= &file_contents
4130 ('clean',
4131 new Automake::Location,
4132 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4133 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4134 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4135 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4136 MAKEFILE => basename $makefile,
4137 );
4138}
4139
4140
4141# &target_cmp ($A, $B)
4142# --------------------
4143# Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4144sub target_cmp
4145{
4146 return 0
4147 if $a eq $b;
4148 return -1
4149 if $b eq '.PHONY';
4150 return 1
4151 if $a eq '.PHONY';
4152 return $a cmp $b;
4153}
4154
4155
4156# &handle_factored_dependencies ()
4157# --------------------------------
4158# Handle everything related to gathered targets.
4159sub handle_factored_dependencies
4160{
4161 # Reject bad hooks.
4162 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4163 'uninstall-exec-local', 'uninstall-exec-hook')
4164 {
4165 my $x = $utarg;
4166 $x =~ s/(data|exec)-//;
4167 reject_rule ($utarg, "use `$x', not `$utarg'");
4168 }
4169
4170 reject_rule ('install-local',
4171 "use `install-data-local' or `install-exec-local', "
4172 . "not `install-local'");
4173
4174 reject_rule ('install-info-local',
4175 "`install-info-local' target defined but "
4176 . "`no-installinfo' option not in use")
4177 unless option 'no-installinfo';
4178
4179 # Install the -local hooks.
4180 foreach (keys %dependencies)
4181 {
4182 # Hooks are installed on the -am targets.
4183 s/-am$// or next;
4184 if (rule "$_-local")
4185 {
4186 depend ("$_-am", "$_-local");
4187 depend ('.PHONY', "$_-local");
4188 }
4189 }
4190
4191 # Install the -hook hooks.
4192 # FIXME: Why not be as liberal as we are with -local hooks?
4193 foreach ('install-exec', 'install-data', 'uninstall')
4194 {
4195 if (rule ("$_-hook"))
4196 {
4197 $actions{"$_-am"} .=
4198 ("\t\@\$(NORMAL_INSTALL)\n"
4199 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4200 }
4201 }
4202
4203 # All the required targets are phony.
4204 depend ('.PHONY', keys %required_targets);
4205
4206 # Actually output gathered targets.
4207 foreach (sort target_cmp keys %dependencies)
4208 {
4209 # If there is nothing about this guy, skip it.
4210 next
4211 unless (@{$dependencies{$_}}
4212 || $actions{$_}
4213 || $required_targets{$_});
4214
4215 # Define gathered targets in undefined conditions.
4216 # FIXME: Right now we must handle .PHONY as an exception,
4217 # because people write things like
4218 # .PHONY: myphonytarget
4219 # to append dependencies. This would not work if Automake
4220 # refrained from defining its own .PHONY target as it does
4221 # with other overridden targets.
4222 my @undefined_conds = (TRUE,);
4223 if ($_ ne '.PHONY')
4224 {
4225 @undefined_conds =
4226 Automake::Rule::define ($_, 'internal',
4227 RULE_AUTOMAKE, TRUE, INTERNAL);
4228 }
4229 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4230 foreach my $cond (@undefined_conds)
4231 {
4232 my $condstr = $cond->subst_string;
4233 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4234 $output_rules .= $actions{$_} if defined $actions{$_};
4235 $output_rules .= "\n";
4236 }
4237 }
4238}
4239
4240
4241# &handle_tests_dejagnu ()
4242# ------------------------
4243sub handle_tests_dejagnu
4244{
4245 push (@check_tests, 'check-DEJAGNU');
4246 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4247}
4248
4249
4250# Handle TESTS variable and other checks.
4251sub handle_tests
4252{
4253 if (option 'dejagnu')
4254 {
4255 &handle_tests_dejagnu;
4256 }
4257 else
4258 {
4259 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4260 {
4261 reject_var ($c, "`$c' defined but `dejagnu' not in "
4262 . "`AUTOMAKE_OPTIONS'");
4263 }
4264 }
4265
4266 if (var ('TESTS'))
4267 {
4268 push (@check_tests, 'check-TESTS');
4269 $output_rules .= &file_contents ('check', new Automake::Location);
4270 }
4271}
4272
4273# Handle Emacs Lisp.
4274sub handle_emacs_lisp
4275{
4276 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4277 'lisp', 'noinst');
4278
4279 return if ! @elfiles;
4280
4281 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4282 map { $_->[1] } @elfiles);
4283 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4284 '$(am__ELFILES:.el=.elc)');
4285 # This one can be overridden by users.
4286 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(am__ELCFILES)');
4287
4288 push @all, '$(ELCFILES)';
4289
4290 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4291 'EMACS', 'lispdir');
4292 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4293 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4294}
4295
4296# Handle Python
4297sub handle_python
4298{
4299 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4300 'noinst');
4301 return if ! @pyfiles;
4302
4303 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4304 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4305 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4306}
4307
4308# Handle Java.
4309sub handle_java
4310{
4311 my @sourcelist = &am_install_var ('-candist',
4312 'java', 'JAVA',
4313 'java', 'noinst', 'check');
4314 return if ! @sourcelist;
4315
4316 my @prefix = am_primary_prefixes ('JAVA', 1,
4317 'java', 'noinst', 'check');
4318
4319 my $dir;
4320 foreach my $curs (@prefix)
4321 {
4322 next
4323 if $curs eq 'EXTRA';
4324
4325 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4326 if defined $dir;
4327 $dir = $curs;
4328 }
4329
4330
4331 push (@all, 'class' . $dir . '.stamp');
4332}
4333
4334
4335# Handle some of the minor options.
4336sub handle_minor_options
4337{
4338 if (option 'readme-alpha')
4339 {
4340 if ($relative_dir eq '.')
4341 {
4342 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4343 {
4344 msg ('error-gnits', $package_version_location,
4345 "version `$package_version' doesn't follow " .
4346 "Gnits standards");
4347 }
4348 if (defined $1 && -f 'README-alpha')
4349 {
4350 # This means we have an alpha release. See
4351 # GNITS_VERSION_PATTERN for details.
4352 push_dist_common ('README-alpha');
4353 }
4354 }
4355 }
4356}
4357
4358################################################################
4359
4360# ($OUTPUT, @INPUTS)
4361# &split_config_file_spec ($SPEC)
4362# -------------------------------
4363# Decode the Autoconf syntax for config files (files, headers, links
4364# etc.).
4365sub split_config_file_spec ($)
4366{
4367 my ($spec) = @_;
4368 my ($output, @inputs) = split (/:/, $spec);
4369
4370 push @inputs, "$output.in"
4371 unless @inputs;
4372
4373 return ($output, @inputs);
4374}
4375
4376# $input
4377# locate_am (@POSSIBLE_SOURCES)
4378# -----------------------------
4379# AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4380# This functions returns the first *.in file for which a *.am exists.
4381# It returns undef otherwise.
4382sub locate_am (@)
4383{
4384 my (@rest) = @_;
4385 my $input;
4386 foreach my $file (@rest)
4387 {
4388 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4389 {
4390 $input = $file;
4391 last;
4392 }
4393 }
4394 return $input;
4395}
4396
4397my %make_list;
4398
4399# &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4400# ---------------------------------------------------
4401# Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4402# (or AC_OUTPUT).
4403sub scan_autoconf_config_files ($$)
4404{
4405 my ($where, $config_files) = @_;
4406
4407 # Look at potential Makefile.am's.
4408 foreach (split ' ', $config_files)
4409 {
4410 # Must skip empty string for Perl 4.
4411 next if $_ eq "\\" || $_ eq '';
4412
4413 # Handle $local:$input syntax.
4414 my ($local, @rest) = split (/:/);
4415 @rest = ("$local.in",) unless @rest;
4416 my $input = locate_am @rest;
4417 if ($input)
4418 {
4419 # We have a file that automake should generate.
4420 $make_list{$input} = join (':', ($local, @rest));
4421 }
4422 else
4423 {
4424 # We have a file that automake should cause to be
4425 # rebuilt, but shouldn't generate itself.
4426 push (@other_input_files, $_);
4427 }
4428 $ac_config_files_location{$local} = $where;
4429 }
4430}
4431
4432
4433# &scan_autoconf_traces ($FILENAME)
4434# ---------------------------------
4435sub scan_autoconf_traces ($)
4436{
4437 my ($filename) = @_;
4438
4439 # Macros to trace, with their minimal number of arguments.
4440 my %traced = (
4441 AC_CANONICAL_HOST => 0,
4442 AC_CANONICAL_SYSTEM => 0,
4443 AC_CONFIG_AUX_DIR => 1,
4444 AC_CONFIG_FILES => 1,
4445 AC_CONFIG_HEADERS => 1,
4446 AC_CONFIG_LINKS => 1,
4447 AC_INIT => 0,
4448 AC_LIBSOURCE => 1,
4449 AC_SUBST => 1,
4450 AM_AUTOMAKE_VERSION => 1,
4451 AM_CONDITIONAL => 2,
4452 AM_ENABLE_MULTILIB => 0,
4453 AM_GNU_GETTEXT => 0,
4454 AM_INIT_AUTOMAKE => 0,
4455 AM_MAINTAINER_MODE => 0,
4456 AM_PROG_CC_C_O => 0,
4457 m4_include => 1,
4458 m4_sinclude => 1,
4459 sinclude => 1,
4460 );
4461
4462 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4463
4464 # Use a separator unlikely to be used, not `:', the default, which
4465 # has a precise meaning for AC_CONFIG_FILES and so on.
4466 $traces .= join (' ',
4467 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4468 (keys %traced));
4469
4470 my $tracefh = new Automake::XFile ("$traces $filename |");
4471 verb "reading $traces";
4472
4473 while ($_ = $tracefh->getline)
4474 {
4475 chomp;
4476 my ($here, @args) = split /::/;
4477 my $where = new Automake::Location $here;
4478 my $macro = $args[0];
4479
4480 prog_error ("unrequested trace `$macro'")
4481 unless exists $traced{$macro};
4482
4483 # Skip and diagnose malformed calls.
4484 if ($#args < $traced{$macro})
4485 {
4486 msg ('syntax', $where, "not enough arguments for $macro");
4487 next;
4488 }
4489
4490 # Alphabetical ordering please.
4491 if ($macro eq 'AC_CANONICAL_HOST')
4492 {
4493 if (! $seen_canonical)
4494 {
4495 $seen_canonical = AC_CANONICAL_HOST;
4496 $canonical_location = $where;
4497 }
4498 }
4499 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4500 {
4501 $seen_canonical = AC_CANONICAL_SYSTEM;
4502 $canonical_location = $where;
4503 }
4504 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4505 {
4506 @config_aux_path = $args[1];
4507 $config_aux_dir_set_in_configure_in = 1;
4508 }
4509 elsif ($macro eq 'AC_CONFIG_FILES')
4510 {
4511 # Look at potential Makefile.am's.
4512 scan_autoconf_config_files ($where, $args[1]);
4513 }
4514 elsif ($macro eq 'AC_CONFIG_HEADERS')
4515 {
4516 foreach my $spec (split (' ', $args[1]))
4517 {
4518 my ($dest, @src) = split (':', $spec);
4519 $ac_config_files_location{$dest} = $where;
4520 push @config_headers, $spec;
4521 }
4522 }
4523 elsif ($macro eq 'AC_CONFIG_LINKS')
4524 {
4525 foreach my $spec (split (' ', $args[1]))
4526 {
4527 my ($dest, $src) = split (':', $spec);
4528 $ac_config_files_location{$dest} = $where;
4529 push @config_links, $spec;
4530 }
4531 }
4532 elsif ($macro eq 'AC_INIT')
4533 {
4534 if (defined $args[2])
4535 {
4536 $package_version = $args[2];
4537 $package_version_location = $where;
4538 }
4539 }
4540 elsif ($macro eq 'AC_LIBSOURCE')
4541 {
4542 $libsources{$args[1]} = $here;
4543 }
4544 elsif ($macro eq 'AC_SUBST')
4545 {
4546 # Just check for alphanumeric in AC_SUBST. If you do
4547 # AC_SUBST(5), then too bad.
4548 $configure_vars{$args[1]} = $where
4549 if $args[1] =~ /^\w+$/;
4550 }
4551 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4552 {
4553 error ($where,
4554 "version mismatch. This is Automake $VERSION,\n" .
4555 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4556 "comes from Automake $args[1]. You should recreate\n" .
4557 "aclocal.m4 with aclocal and run automake again.\n",
4558 # $? = 63 is used to indicate version mismatch to missing.
4559 exit_code => 63)
4560 if $VERSION ne $args[1];
4561
4562 $seen_automake_version = 1;
4563 }
4564 elsif ($macro eq 'AM_CONDITIONAL')
4565 {
4566 $configure_cond{$args[1]} = $where;
4567 }
4568 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4569 {
4570 $seen_multilib = $where;
4571 }
4572 elsif ($macro eq 'AM_GNU_GETTEXT')
4573 {
4574 $seen_gettext = $where;
4575 $ac_gettext_location = $where;
4576 $seen_gettext_external = grep ($_ eq 'external', @args);
4577 }
4578 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4579 {
4580 $seen_init_automake = $where;
4581 if (defined $args[2])
4582 {
4583 $package_version = $args[2];
4584 $package_version_location = $where;
4585 }
4586 elsif (defined $args[1])
4587 {
4588 exit $exit_code
4589 if (process_global_option_list ($where,
4590 split (' ', $args[1])));
4591 }
4592 }
4593 elsif ($macro eq 'AM_MAINTAINER_MODE')
4594 {
4595 $seen_maint_mode = $where;
4596 }
4597 elsif ($macro eq 'AM_PROG_CC_C_O')
4598 {
4599 $seen_cc_c_o = $where;
4600 }
4601 elsif ($macro eq 'm4_include'
4602 || $macro eq 'm4_sinclude'
4603 || $macro eq 'sinclude')
4604 {
4605 # Some modified versions of Autoconf don't use
4606 # forzen files. Consequently it's possible that we see all
4607 # m4_include's performed during Autoconf's startup.
4608 # Obviously we don't want to distribute Autoconf's files
4609 # so we skip absolute filenames here.
4610 push @configure_deps, '$(top_srcdir)/' . $args[1]
4611 unless $here =~ m,^(?:\w:)?[\\/],;
4612 # Keep track of the greatest timestamp.
4613 if (-e $args[1])
4614 {
4615 my $mtime = mtime $args[1];
4616 $configure_deps_greatest_timestamp = $mtime
4617 if $mtime > $configure_deps_greatest_timestamp;
4618 }
4619 }
4620 }
4621
4622 $tracefh->close;
4623}
4624
4625
4626# &scan_autoconf_files ()
4627# -----------------------
4628# Check whether we use `configure.ac' or `configure.in'.
4629# Scan it (and possibly `aclocal.m4') for interesting things.
4630# We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4631sub scan_autoconf_files ()
4632{
4633 # Reinitialize libsources here. This isn't really necessary,
4634 # since we currently assume there is only one configure.ac. But
4635 # that won't always be the case.
4636 %libsources = ();
4637
4638 # Keep track of the youngest configure dependency.
4639 $configure_deps_greatest_timestamp = mtime $configure_ac;
4640 if (-e 'aclocal.m4')
4641 {
4642 my $mtime = mtime 'aclocal.m4';
4643 $configure_deps_greatest_timestamp = $mtime
4644 if $mtime > $configure_deps_greatest_timestamp;
4645 }
4646
4647 scan_autoconf_traces ($configure_ac);
4648
4649 @configure_input_files = sort keys %make_list;
4650 # Set input and output files if not specified by user.
4651 if (! @input_files)
4652 {
4653 @input_files = @configure_input_files;
4654 %output_files = %make_list;
4655 }
4656
4657
4658 if (! $seen_init_automake)
4659 {
4660 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4661 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4662 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4663 . "and that aclocal.m4 was recently regenerated "
4664 . "(using aclocal).");
4665 }
4666 else
4667 {
4668 if (! $seen_automake_version)
4669 {
4670 if (-f 'aclocal.m4')
4671 {
4672 error ($seen_init_automake,
4673 "your implementation of AM_INIT_AUTOMAKE comes from " .
4674 "an\nold Automake version. You should recreate " .
4675 "aclocal.m4\nwith aclocal and run automake again.\n",
4676 # $? = 63 is used to indicate version mismatch to missing.
4677 exit_code => 63);
4678 }
4679 else
4680 {
4681 error ($seen_init_automake,
4682 "no proper implementation of AM_INIT_AUTOMAKE was " .
4683 "found,\nprobably because aclocal.m4 is missing...\n" .
4684 "You should run aclocal to create this file, then\n" .
4685 "run automake again.\n");
4686 }
4687 }
4688 }
4689
4690 # Look for some files we need. Always check for these. This
4691 # check must be done for every run, even those where we are only
4692 # looking at a subdir Makefile. We must set relative_dir so that
4693 # the file-finding machinery works.
4694 # FIXME: Is this broken because it needs dynamic scopes.
4695 # My tests seems to show it's not the case.
4696 $relative_dir = '.';
4697 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4698 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4699 if -f $config_aux_path[0] . '/install.sh';
4700
4701 # Preserve dist_common for later.
4702 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4703}
4704
4705################################################################
4706
4707# Set up for Cygnus mode.
4708sub check_cygnus
4709{
4710 my $cygnus = option 'cygnus';
4711 return unless $cygnus;
4712
4713 set_strictness ('foreign');
4714 set_option ('no-installinfo', $cygnus);
4715 set_option ('no-dependencies', $cygnus);
4716 set_option ('no-dist', $cygnus);
4717
4718 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4719 if !$seen_maint_mode;
4720}
4721
4722# Do any extra checking for GNU standards.
4723sub check_gnu_standards
4724{
4725 if ($relative_dir eq '.')
4726 {
4727 # In top level (or only) directory.
4728 require_file ("$am_file.am", GNU,
4729 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4730
4731 # Accept one of these three licenses; default to COPYING.
4732 # Make sure we do not overwrite an existing license.
4733 my $license;
4734 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4735 {
4736 if (-f $_)
4737 {
4738 $license = $_;
4739 last;
4740 }
4741 }
4742 require_file ("$am_file.am", GNU, 'COPYING')
4743 unless $license;
4744 }
4745
4746 for my $opt ('no-installman', 'no-installinfo')
4747 {
4748 msg ('error-gnu', option $opt,
4749 "option `$opt' disallowed by GNU standards")
4750 if option $opt;
4751 }
4752}
4753
4754# Do any extra checking for GNITS standards.
4755sub check_gnits_standards
4756{
4757 if ($relative_dir eq '.')
4758 {
4759 # In top level (or only) directory.
4760 require_file ("$am_file.am", GNITS, 'THANKS');
4761 }
4762}
4763
4764################################################################
4765#
4766# Functions to handle files of each language.
4767
4768# Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4769# simple formula: Return value is LANG_SUBDIR if the resulting object
4770# file should be in a subdir if the source file is, LANG_PROCESS if
4771# file is to be dealt with, LANG_IGNORE otherwise.
4772
4773# Much of the actual processing is handled in
4774# handle_single_transform_list. These functions exist so that
4775# auxiliary information can be recorded for a later cleanup pass.
4776# Note that the calls to these functions are computed, so don't bother
4777# searching for their precise names in the source.
4778
4779# This is just a convenience function that can be used to determine
4780# when a subdir object should be used.
4781sub lang_sub_obj
4782{
4783 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4784}
4785
4786# Rewrite a single C source file.
4787sub lang_c_rewrite
4788{
4789 my ($directory, $base, $ext) = @_;
4790
4791 if (option 'ansi2knr' && $base =~ /_$/)
4792 {
4793 # FIXME: include line number in error.
4794 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4795 }
4796
4797 my $r = LANG_PROCESS;
4798 if (option 'subdir-objects')
4799 {
4800 $r = LANG_SUBDIR;
4801 $base = $directory . '/' . $base
4802 unless $directory eq '.' || $directory eq '';
4803
4804 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4805 . "not in `$configure_ac'",
4806 uniq_scope => US_GLOBAL)
4807 unless $seen_cc_c_o;
4808
4809 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4810
4811 # In this case we already have the directory information, so
4812 # don't add it again.
4813 $de_ansi_files{$base} = '';
4814 }
4815 else
4816 {
4817 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4818 ? ''
4819 : "$directory/");
4820 }
4821
4822 return $r;
4823}
4824
4825# Rewrite a single C++ source file.
4826sub lang_cxx_rewrite
4827{
4828 return &lang_sub_obj;
4829}
4830
4831# Rewrite a single header file.
4832sub lang_header_rewrite
4833{
4834 # Header files are simply ignored.
4835 return LANG_IGNORE;
4836}
4837
4838# Rewrite a single yacc file.
4839sub lang_yacc_rewrite
4840{
4841 my ($directory, $base, $ext) = @_;
4842
4843 my $r = &lang_sub_obj;
4844 (my $newext = $ext) =~ tr/y/c/;
4845 return ($r, $newext);
4846}
4847
4848# Rewrite a single yacc++ file.
4849sub lang_yaccxx_rewrite
4850{
4851 my ($directory, $base, $ext) = @_;
4852
4853 my $r = &lang_sub_obj;
4854 (my $newext = $ext) =~ tr/y/c/;
4855 return ($r, $newext);
4856}
4857
4858# Rewrite a single lex file.
4859sub lang_lex_rewrite
4860{
4861 my ($directory, $base, $ext) = @_;
4862
4863 my $r = &lang_sub_obj;
4864 (my $newext = $ext) =~ tr/l/c/;
4865 return ($r, $newext);
4866}
4867
4868# Rewrite a single lex++ file.
4869sub lang_lexxx_rewrite
4870{
4871 my ($directory, $base, $ext) = @_;
4872
4873 my $r = &lang_sub_obj;
4874 (my $newext = $ext) =~ tr/l/c/;
4875 return ($r, $newext);
4876}
4877
4878# Rewrite a single assembly file.
4879sub lang_asm_rewrite
4880{
4881 return &lang_sub_obj;
4882}
4883
4884# Rewrite a single Fortran 77 file.
4885sub lang_f77_rewrite
4886{
4887 return LANG_PROCESS;
4888}
4889
4890# Rewrite a single preprocessed Fortran 77 file.
4891sub lang_ppf77_rewrite
4892{
4893 return LANG_PROCESS;
4894}
4895
4896# Rewrite a single ratfor file.
4897sub lang_ratfor_rewrite
4898{
4899 return LANG_PROCESS;
4900}
4901
4902# Rewrite a single Objective C file.
4903sub lang_objc_rewrite
4904{
4905 return &lang_sub_obj;
4906}
4907
4908# Rewrite a single Java file.
4909sub lang_java_rewrite
4910{
4911 return LANG_SUBDIR;
4912}
4913
4914# The lang_X_finish functions are called after all source file
4915# processing is done. Each should handle defining rules for the
4916# language, etc. A finish function is only called if a source file of
4917# the appropriate type has been seen.
4918
4919sub lang_c_finish
4920{
4921 # Push all libobjs files onto de_ansi_files. We actually only
4922 # push files which exist in the current directory, and which are
4923 # genuine source files.
4924 foreach my $file (keys %libsources)
4925 {
4926 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4927 {
4928 $de_ansi_files{$1} = ''
4929 }
4930 }
4931
4932 if (option 'ansi2knr' && keys %de_ansi_files)
4933 {
4934 # Make all _.c files depend on their corresponding .c files.
4935 my @objects;
4936 foreach my $base (sort keys %de_ansi_files)
4937 {
4938 # Each _.c file must depend on ansi2knr; otherwise it
4939 # might be used in a parallel build before it is built.
4940 # We need to support files in the srcdir and in the build
4941 # dir (because these files might be auto-generated. But
4942 # we can't use $< -- some makes only define $< during a
4943 # suffix rule.
4944 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4945 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4946 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4947 . '`if test -f $(srcdir)/' . $ansfile
4948 . '; then echo $(srcdir)/' . $ansfile
4949 . '; else echo ' . $ansfile . '; fi` '
4950 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4951 . '| $(ANSI2KNR) > $@'
4952 # If ansi2knr fails then we shouldn't
4953 # create the _.c file
4954 . " || rm -f \$\@\n");
4955 push (@objects, $base . '_.$(OBJEXT)');
4956 push (@objects, $base . '_.lo')
4957 if var ('LIBTOOL');
4958 }
4959
4960 # Make all _.o (and _.lo) files depend on ansi2knr.
4961 # Use a sneaky little hack to make it print nicely.
4962 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4963 }
4964}
4965
4966# This is a yacc helper which is called whenever we have decided to
4967# compile a yacc file.
4968sub lang_yacc_target_hook
4969{
4970 my ($self, $aggregate, $output, $input) = @_;
4971
4972 my $flag = $aggregate . "_YFLAGS";
4973 my $flagvar = var $flag;
4974 my $YFLAGSvar = var 'YFLAGS';
4975 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4976 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4977 {
4978 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4979 my $header = $output_base . '.h';
4980
4981 # Found a `-d' that applies to the compilation of this file.
4982 # Add a dependency for the generated header file, and arrange
4983 # for that file to be included in the distribution.
4984 # FIXME: this fails for `nodist_*_SOURCES'.
4985 foreach my $cond (Automake::Rule::define (${header}, 'internal',
4986 RULE_AUTOMAKE, TRUE,
4987 INTERNAL))
4988 {
4989 my $condstr = $cond->subst_string;
4990 $output_rules .= ("$condstr${header}: $output\n"
4991 # Recover from removal of $header
4992 . "$condstr\t\@if test ! -f \$@; then \\\n"
4993 . "$condstr\t rm -f $output; \\\n"
4994 . "$condstr\t \$(MAKE) $output; \\\n"
4995 . "$condstr\telse :; fi\n");
4996 }
4997 &push_dist_common ($header);
4998
4999 # If the files are built in the build directory, then we want
5000 # to remove them with `make clean'. If they are in srcdir
5001 # they shouldn't be touched. However, we can't determine this
5002 # statically, and the GNU rules say that yacc/lex output files
5003 # should be removed by maintainer-clean. So that's what we
5004 # do.
5005 $clean_files{$header} = MAINTAINER_CLEAN;
5006 }
5007 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5008 # See the comment above for $HEADER.
5009 $clean_files{$output} = MAINTAINER_CLEAN;
5010}
5011
5012# This is a lex helper which is called whenever we have decided to
5013# compile a lex file.
5014sub lang_lex_target_hook
5015{
5016 my ($self, $aggregate, $output, $input) = @_;
5017 # If the files are built in the build directory, then we want to
5018 # remove them with `make clean'. If they are in srcdir they
5019 # shouldn't be touched. However, we can't determine this
5020 # statically, and the GNU rules say that yacc/lex output files
5021 # should be removed by maintainer-clean. So that's what we do.
5022 $clean_files{$output} = MAINTAINER_CLEAN;
5023}
5024
5025# This is a helper for both lex and yacc.
5026sub yacc_lex_finish_helper
5027{
5028 return if defined $language_scratch{'lex-yacc-done'};
5029 $language_scratch{'lex-yacc-done'} = 1;
5030
5031 # If there is more than one distinct yacc (resp lex) source file
5032 # in a given directory, then the `ylwrap' program is required to
5033 # allow parallel builds to work correctly. FIXME: for now, no
5034 # line number.
5035 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5036 if ($config_aux_dir_set_in_configure_in)
5037 {
5038 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
5039 }
5040 else
5041 {
5042 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5043 }
5044}
5045
5046sub lang_yacc_finish
5047{
5048 return if defined $language_scratch{'yacc-done'};
5049 $language_scratch{'yacc-done'} = 1;
5050
5051 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5052
5053 &yacc_lex_finish_helper
5054 if count_files_for_language ('yacc') > 1;
5055}
5056
5057
5058sub lang_lex_finish
5059{
5060 return if defined $language_scratch{'lex-done'};
5061 $language_scratch{'lex-done'} = 1;
5062
5063 &yacc_lex_finish_helper
5064 if count_files_for_language ('lex') > 1;
5065}
5066
5067
5068# Given a hash table of linker names, pick the name that has the most
5069# precedence. This is lame, but something has to have global
5070# knowledge in order to eliminate the conflict. Add more linkers as
5071# required.
5072sub resolve_linker
5073{
5074 my (%linkers) = @_;
5075
5076 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5077 {
5078 return $l if defined $linkers{$l};
5079 }
5080 return 'LINK';
5081}
5082
5083# Called to indicate that an extension was used.
5084sub saw_extension
5085{
5086 my ($ext) = @_;
5087 if (! defined $extension_seen{$ext})
5088 {
5089 $extension_seen{$ext} = 1;
5090 }
5091 else
5092 {
5093 ++$extension_seen{$ext};
5094 }
5095}
5096
5097# Return the number of files seen for a given language. Knows about
5098# special cases we care about. FIXME: this is hideous. We need
5099# something that involves real language objects. For instance yacc
5100# and yaccxx could both derive from a common yacc class which would
5101# know about the strange ylwrap requirement. (Or better yet we could
5102# just not support legacy yacc!)
5103sub count_files_for_language
5104{
5105 my ($name) = @_;
5106
5107 my @names;
5108 if ($name eq 'yacc' || $name eq 'yaccxx')
5109 {
5110 @names = ('yacc', 'yaccxx');
5111 }
5112 elsif ($name eq 'lex' || $name eq 'lexxx')
5113 {
5114 @names = ('lex', 'lexxx');
5115 }
5116 else
5117 {
5118 @names = ($name);
5119 }
5120
5121 my $r = 0;
5122 foreach $name (@names)
5123 {
5124 my $lang = $languages{$name};
5125 foreach my $ext (@{$lang->extensions})
5126 {
5127 $r += $extension_seen{$ext}
5128 if defined $extension_seen{$ext};
5129 }
5130 }
5131
5132 return $r
5133}
5134
5135# Called to ask whether source files have been seen . If HEADERS is 1,
5136# headers can be included.
5137sub saw_sources_p
5138{
5139 my ($headers) = @_;
5140
5141 # count all the sources
5142 my $count = 0;
5143 foreach my $val (values %extension_seen)
5144 {
5145 $count += $val;
5146 }
5147
5148 if (!$headers)
5149 {
5150 $count -= count_files_for_language ('header');
5151 }
5152
5153 return $count > 0;
5154}
5155
5156
5157# register_language (%ATTRIBUTE)
5158# ------------------------------
5159# Register a single language.
5160# Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5161sub register_language (%)
5162{
5163 my (%option) = @_;
5164
5165 # Set the defaults.
5166 $option{'ansi'} = 0
5167 unless defined $option{'ansi'};
5168 $option{'autodep'} = 'no'
5169 unless defined $option{'autodep'};
5170 $option{'linker'} = ''
5171 unless defined $option{'linker'};
5172 $option{'flags'} = []
5173 unless defined $option{'flags'};
5174 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5175 unless defined $option{'output_extensions'};
5176
5177 my $lang = new Language (%option);
5178
5179 # Fill indexes.
5180 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5181 $languages{$lang->name} = $lang;
5182
5183 # Update the pattern of known extensions.
5184 accept_extensions (@{$lang->extensions});
5185
5186 # Upate the $suffix_rule map.
5187 foreach my $suffix (@{$lang->extensions})
5188 {
5189 foreach my $dest (&{$lang->output_extensions} ($suffix))
5190 {
5191 register_suffix_rule (INTERNAL, $suffix, $dest);
5192 }
5193 }
5194}
5195
5196# derive_suffix ($EXT, $OBJ)
5197# --------------------------
5198# This function is used to find a path from a user-specified suffix $EXT
5199# to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5200sub derive_suffix ($$)
5201{
5202 my ($source_ext, $obj) = @_;
5203
5204 while (! $extension_map{$source_ext}
5205 && $source_ext ne $obj
5206 && exists $suffix_rules->{$source_ext}
5207 && exists $suffix_rules->{$source_ext}{$obj})
5208 {
5209 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5210 }
5211
5212 return $source_ext;
5213}
5214
5215
5216################################################################
5217
5218# Pretty-print something and append to output_rules.
5219sub pretty_print_rule
5220{
5221 $output_rules .= &makefile_wrap (@_);
5222}
5223
5224
5225################################################################
5226
5227
5228## -------------------------------- ##
5229## Handling the conditional stack. ##
5230## -------------------------------- ##
5231
5232
5233# $STRING
5234# make_conditional_string ($NEGATE, $COND)
5235# ----------------------------------------
5236sub make_conditional_string ($$)
5237{
5238 my ($negate, $cond) = @_;
5239 $cond = "${cond}_TRUE"
5240 unless $cond =~ /^TRUE|FALSE$/;
5241 $cond = Automake::Condition::conditional_negate ($cond)
5242 if $negate;
5243 return $cond;
5244}
5245
5246
5247# $COND
5248# cond_stack_if ($NEGATE, $COND, $WHERE)
5249# --------------------------------------
5250sub cond_stack_if ($$$)
5251{
5252 my ($negate, $cond, $where) = @_;
5253
5254 error $where, "$cond does not appear in AM_CONDITIONAL"
5255 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5256
5257 push (@cond_stack, make_conditional_string ($negate, $cond));
5258
5259 return new Automake::Condition (@cond_stack);
5260}
5261
5262
5263# $COND
5264# cond_stack_else ($NEGATE, $COND, $WHERE)
5265# ----------------------------------------
5266sub cond_stack_else ($$$)
5267{
5268 my ($negate, $cond, $where) = @_;
5269
5270 if (! @cond_stack)
5271 {
5272 error $where, "else without if";
5273 return FALSE;
5274 }
5275
5276 $cond_stack[$#cond_stack] =
5277 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5278
5279 # If $COND is given, check against it.
5280 if (defined $cond)
5281 {
5282 $cond = make_conditional_string ($negate, $cond);
5283
5284 error ($where, "else reminder ($negate$cond) incompatible with "
5285 . "current conditional: $cond_stack[$#cond_stack]")
5286 if $cond_stack[$#cond_stack] ne $cond;
5287 }
5288
5289 return new Automake::Condition (@cond_stack);
5290}
5291
5292
5293# $COND
5294# cond_stack_endif ($NEGATE, $COND, $WHERE)
5295# -----------------------------------------
5296sub cond_stack_endif ($$$)
5297{
5298 my ($negate, $cond, $where) = @_;
5299 my $old_cond;
5300
5301 if (! @cond_stack)
5302 {
5303 error $where, "endif without if";
5304 return TRUE;
5305 }
5306
5307 # If $COND is given, check against it.
5308 if (defined $cond)
5309 {
5310 $cond = make_conditional_string ($negate, $cond);
5311
5312 error ($where, "endif reminder ($negate$cond) incompatible with "
5313 . "current conditional: $cond_stack[$#cond_stack]")
5314 if $cond_stack[$#cond_stack] ne $cond;
5315 }
5316
5317 pop @cond_stack;
5318
5319 return new Automake::Condition (@cond_stack);
5320}
5321
5322
5323
5324
5325
5326## ------------------------ ##
5327## Handling the variables. ##
5328## ------------------------ ##
5329
5330
5331# &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5332# -----------------------------------------------------
5333# Like define_variable, but the value is a list, and the variable may
5334# be defined conditionally. The second argument is the Condition
5335# under which the value should be defined; this should be the empty
5336# string to define the variable unconditionally. The third argument
5337# is a list holding the values to use for the variable. The value is
5338# pretty printed in the output file.
5339sub define_pretty_variable ($$$@)
5340{
5341 my ($var, $cond, $where, @value) = @_;
5342
5343 if (! vardef ($var, $cond))
5344 {
5345 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5346 '', $where, VAR_PRETTY);
5347 rvar ($var)->rdef ($cond)->set_seen;
5348 }
5349}
5350
5351
5352# define_variable ($VAR, $VALUE, $WHERE)
5353# --------------------------------------
5354# Define a new user variable VAR to VALUE, but only if not already defined.
5355sub define_variable ($$$)
5356{
5357 my ($var, $value, $where) = @_;
5358 define_pretty_variable ($var, TRUE, $where, $value);
5359}
5360
5361
5362# define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5363# -----------------------------------------------------------
5364# Define the $VAR which content is the list of file names composed of
5365# a @BASENAME and the $EXTENSION.
5366sub define_files_variable ($\@$$)
5367{
5368 my ($var, $basename, $extension, $where) = @_;
5369 define_variable ($var,
5370 join (' ', map { "$_.$extension" } @$basename),
5371 $where);
5372}
5373
5374
5375# Like define_variable, but define a variable to be the configure
5376# substitution by the same name.
5377sub define_configure_variable ($)
5378{
5379 my ($var) = @_;
5380
5381 my $pretty = VAR_ASIS;
5382 my $owner = VAR_CONFIGURE;
5383
5384 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5385 # it in protos.m4, but later redefine it elsewhere. This is
5386 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5387 # be subst'd by `\', which certainly would not be appreciated by
5388 # Make.
5389 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5390 {
5391 $pretty = VAR_SILENT;
5392 $owner = VAR_AUTOMAKE;
5393 }
5394
5395 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5396 '', $configure_vars{$var}, $pretty);
5397}
5398
5399
5400# define_compiler_variable ($LANG)
5401# --------------------------------
5402# Define a compiler variable. We also handle defining the `LT'
5403# version of the command when using libtool.
5404sub define_compiler_variable ($)
5405{
5406 my ($lang) = @_;
5407
5408 my ($var, $value) = ($lang->compiler, $lang->compile);
5409 &define_variable ($var, $value, INTERNAL);
5410 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5411 if var ('LIBTOOL');
5412}
5413
5414
5415# define_linker_variable ($LANG)
5416# ------------------------------
5417# Define linker variables.
5418sub define_linker_variable ($)
5419{
5420 my ($lang) = @_;
5421
5422 my ($var, $value) = ($lang->lder, $lang->ld);
5423 # CCLD = $(CC).
5424 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5425 # CCLINK = $(CCLD) blah blah...
5426 &define_variable ($lang->linker,
5427 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5428 . $lang->link),
5429 INTERNAL);
5430}
5431
5432################################################################
5433
5434# &check_trailing_slash ($WHERE, $LINE)
5435# --------------------------------------
5436# Return 1 iff $LINE ends with a slash.
5437# Might modify $LINE.
5438sub check_trailing_slash ($\$)
5439{
5440 my ($where, $line) = @_;
5441
5442 # Ignore `##' lines.
5443 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5444
5445 # Catch and fix a common error.
5446 msg "syntax", $where, "whitespace following trailing backslash"
5447 if $$line =~ s/\\\s+\n$/\\\n/;
5448
5449 return $$line =~ /\\$/;
5450}
5451
5452
5453# &read_am_file ($AMFILE, $WHERE)
5454# -------------------------------
5455# Read Makefile.am and set up %contents. Simultaneously copy lines
5456# from Makefile.am into $output_trailer, or define variables as
5457# appropriate. NOTE we put rules in the trailer section. We want
5458# user rules to come after our generated stuff.
5459sub read_am_file ($$)
5460{
5461 my ($amfile, $where) = @_;
5462
5463 my $am_file = new Automake::XFile ("< $amfile");
5464 verb "reading $amfile";
5465
5466 # Keep track of the youngest output dependency.
5467 my $mtime = mtime $amfile;
5468 $output_deps_greatest_timestamp = $mtime
5469 if $mtime > $output_deps_greatest_timestamp;
5470
5471 my $spacing = '';
5472 my $comment = '';
5473 my $blank = 0;
5474 my $saw_bk = 0;
5475
5476 use constant IN_VAR_DEF => 0;
5477 use constant IN_RULE_DEF => 1;
5478 use constant IN_COMMENT => 2;
5479 my $prev_state = IN_RULE_DEF;
5480
5481 while ($_ = $am_file->getline)
5482 {
5483 $where->set ("$amfile:$.");
5484 if (/$IGNORE_PATTERN/o)
5485 {
5486 # Merely delete comments beginning with two hashes.
5487 }
5488 elsif (/$WHITE_PATTERN/o)
5489 {
5490 error $where, "blank line following trailing backslash"
5491 if $saw_bk;
5492 # Stick a single white line before the incoming macro or rule.
5493 $spacing = "\n";
5494 $blank = 1;
5495 # Flush all comments seen so far.
5496 if ($comment ne '')
5497 {
5498 $output_vars .= $comment;
5499 $comment = '';
5500 }
5501 }
5502 elsif (/$COMMENT_PATTERN/o)
5503 {
5504 # Stick comments before the incoming macro or rule. Make
5505 # sure a blank line precedes the first block of comments.
5506 $spacing = "\n" unless $blank;
5507 $blank = 1;
5508 $comment .= $spacing . $_;
5509 $spacing = '';
5510 $prev_state = IN_COMMENT;
5511 }
5512 else
5513 {
5514 last;
5515 }
5516 $saw_bk = check_trailing_slash ($where, $_);
5517 }
5518
5519 # We save the conditional stack on entry, and then check to make
5520 # sure it is the same on exit. This lets us conditionally include
5521 # other files.
5522 my @saved_cond_stack = @cond_stack;
5523 my $cond = new Automake::Condition (@cond_stack);
5524
5525 my $last_var_name = '';
5526 my $last_var_type = '';
5527 my $last_var_value = '';
5528 my $last_where;
5529 # FIXME: shouldn't use $_ in this loop; it is too big.
5530 while ($_)
5531 {
5532 $where->set ("$amfile:$.");
5533
5534 # Make sure the line is \n-terminated.
5535 chomp;
5536 $_ .= "\n";
5537
5538 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5539 # used by users. @MAINT@ is an anachronism now.
5540 $_ =~ s/\@MAINT\@//g
5541 unless $seen_maint_mode;
5542
5543 my $new_saw_bk = check_trailing_slash ($where, $_);
5544
5545 if (/$IGNORE_PATTERN/o)
5546 {
5547 # Merely delete comments beginning with two hashes.
5548 }
5549 elsif (/$WHITE_PATTERN/o)
5550 {
5551 # Stick a single white line before the incoming macro or rule.
5552 $spacing = "\n";
5553 error $where, "blank line following trailing backslash"
5554 if $saw_bk;
5555 }
5556 elsif (/$COMMENT_PATTERN/o)
5557 {
5558 # Stick comments before the incoming macro or rule.
5559 $comment .= $spacing . $_;
5560 $spacing = '';
5561 error $where, "comment following trailing backslash"
5562 if $saw_bk && $comment eq '';
5563 $prev_state = IN_COMMENT;
5564 }
5565 elsif ($saw_bk)
5566 {
5567 if ($prev_state == IN_RULE_DEF)
5568 {
5569 my $cond = new Automake::Condition @cond_stack;
5570 $output_trailer .= $cond->subst_string;
5571 $output_trailer .= $_;
5572 }
5573 elsif ($prev_state == IN_COMMENT)
5574 {
5575 # If the line doesn't start with a `#', add it.
5576 # We do this because a continued comment like
5577 # # A = foo \
5578 # bar \
5579 # baz
5580 # is not portable. BSD make doesn't honor
5581 # escaped newlines in comments.
5582 s/^#?/#/;
5583 $comment .= $spacing . $_;
5584 }
5585 else # $prev_state == IN_VAR_DEF
5586 {
5587 $last_var_value .= ' '
5588 unless $last_var_value =~ /\s$/;
5589 $last_var_value .= $_;
5590
5591 if (!/\\$/)
5592 {
5593 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5594 $last_var_type, $cond,
5595 $last_var_value, $comment,
5596 $last_where, VAR_ASIS)
5597 if $cond != FALSE;
5598 $comment = $spacing = '';
5599 }
5600 }
5601 }
5602
5603 elsif (/$IF_PATTERN/o)
5604 {
5605 $cond = cond_stack_if ($1, $2, $where);
5606 }
5607 elsif (/$ELSE_PATTERN/o)
5608 {
5609 $cond = cond_stack_else ($1, $2, $where);
5610 }
5611 elsif (/$ENDIF_PATTERN/o)
5612 {
5613 $cond = cond_stack_endif ($1, $2, $where);
5614 }
5615
5616 elsif (/$RULE_PATTERN/o)
5617 {
5618 # Found a rule.
5619 $prev_state = IN_RULE_DEF;
5620
5621 # For now we have to output all definitions of user rules
5622 # and can't diagnose duplicates (see the comment in
5623 # rule_define). So we go on and ignore the return value.
5624 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5625
5626 check_variable_expansions ($_, $where);
5627
5628 $output_trailer .= $comment . $spacing;
5629 my $cond = new Automake::Condition @cond_stack;
5630 $output_trailer .= $cond->subst_string;
5631 $output_trailer .= $_;
5632 $comment = $spacing = '';
5633 }
5634 elsif (/$ASSIGNMENT_PATTERN/o)
5635 {
5636 # Found a macro definition.
5637 $prev_state = IN_VAR_DEF;
5638 $last_var_name = $1;
5639 $last_var_type = $2;
5640 $last_var_value = $3;
5641 $last_where = $where->clone;
5642 if ($3 ne '' && substr ($3, -1) eq "\\")
5643 {
5644 # We preserve the `\' because otherwise the long lines
5645 # that are generated will be truncated by broken
5646 # `sed's.
5647 $last_var_value = $3 . "\n";
5648 }
5649
5650 if (!/\\$/)
5651 {
5652 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5653 $last_var_type, $cond,
5654 $last_var_value, $comment,
5655 $last_where, VAR_ASIS)
5656 if $cond != FALSE;
5657 $comment = $spacing = '';
5658 }
5659 }
5660 elsif (/$INCLUDE_PATTERN/o)
5661 {
5662 my $path = $1;
5663
5664 if ($path =~ s/^\$\(top_srcdir\)\///)
5665 {
5666 push (@include_stack, "\$\(top_srcdir\)/$path");
5667 # Distribute any included file.
5668
5669 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5670 # otherwise OSF make will implicitly copy the included
5671 # file in the build tree during `make distdir' to satisfy
5672 # the dependency.
5673 # (subdircond2.test and subdircond3.test will fail.)
5674 push_dist_common ("\$\(top_srcdir\)/$path");
5675 }
5676 else
5677 {
5678 $path =~ s/\$\(srcdir\)\///;
5679 push (@include_stack, "\$\(srcdir\)/$path");
5680 # Always use the $(srcdir) prefix in DIST_COMMON,
5681 # otherwise OSF make will implicitly copy the included
5682 # file in the build tree during `make distdir' to satisfy
5683 # the dependency.
5684 # (subdircond2.test and subdircond3.test will fail.)
5685 push_dist_common ("\$\(srcdir\)/$path");
5686 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5687 }
5688 $where->push_context ("`$path' included from here");
5689 &read_am_file ($path, $where);
5690 $where->pop_context;
5691 }
5692 else
5693 {
5694 # This isn't an error; it is probably a continued rule.
5695 # In fact, this is what we assume.
5696 $prev_state = IN_RULE_DEF;
5697 check_variable_expansions ($_, $where);
5698 $output_trailer .= $comment . $spacing;
5699 my $cond = new Automake::Condition @cond_stack;
5700 $output_trailer .= $cond->subst_string;
5701 $output_trailer .= $_;
5702 $comment = $spacing = '';
5703 error $where, "`#' comment at start of rule is unportable"
5704 if $_ =~ /^\t\s*\#/;
5705 }
5706
5707 $saw_bk = $new_saw_bk;
5708 $_ = $am_file->getline;
5709 }
5710
5711 $output_trailer .= $comment;
5712
5713 error ($where, "trailing backslash on last line")
5714 if $saw_bk;
5715
5716 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5717 : "too many conditionals closed in include file"))
5718 if "@saved_cond_stack" ne "@cond_stack";
5719}
5720
5721
5722# define_standard_variables ()
5723# ----------------------------
5724# A helper for read_main_am_file which initializes configure variables
5725# and variables from header-vars.am.
5726sub define_standard_variables
5727{
5728 my $saved_output_vars = $output_vars;
5729 my ($comments, undef, $rules) =
5730 file_contents_internal (1, "$libdir/am/header-vars.am",
5731 new Automake::Location);
5732
5733 foreach my $var (sort keys %configure_vars)
5734 {
5735 &define_configure_variable ($var);
5736 }
5737
5738 $output_vars .= $comments . $rules;
5739}
5740
5741# Read main am file.
5742sub read_main_am_file
5743{
5744 my ($amfile) = @_;
5745
5746 # This supports the strange variable tricks we are about to play.
5747 prog_error (macros_dump () . "variable defined before read_main_am_file")
5748 if (scalar (variables) > 0);
5749
5750 # Generate copyright header for generated Makefile.in.
5751 # We do discard the output of predefined variables, handled below.
5752 $output_vars = ("# $in_file_name generated by automake "
5753 . $VERSION . " from $am_file_name.\n");
5754 $output_vars .= '# ' . subst ('configure_input') . "\n";
5755 $output_vars .= $gen_copyright;
5756
5757 # We want to predefine as many variables as possible. This lets
5758 # the user set them with `+=' in Makefile.am.
5759 &define_standard_variables;
5760
5761 # Read user file, which might override some of our values.
5762 &read_am_file ($amfile, new Automake::Location);
5763}
5764
5765
5766
5767################################################################
5768
5769# $FLATTENED
5770# &flatten ($STRING)
5771# ------------------
5772# Flatten the $STRING and return the result.
5773sub flatten
5774{
5775 $_ = shift;
5776
5777 s/\\\n//somg;
5778 s/\s+/ /g;
5779 s/^ //;
5780 s/ $//;
5781
5782 return $_;
5783}
5784
5785
5786# @PARAGRAPHS
5787# &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5788# ------------------------------------------
5789# Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5790# paragraphs.
5791sub make_paragraphs ($%)
5792{
5793 my ($file, %transform) = @_;
5794
5795 # Complete %transform with global options and make it a Perl
5796 # $command.
5797 my $command =
5798 "s/$IGNORE_PATTERN//gm;"
5799 . transform (%transform,
5800 'CYGNUS' => !! option 'cygnus',
5801 'MAINTAINER-MODE'
5802 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5803
5804 'BZIP2' => !! option 'dist-bzip2',
5805 'COMPRESS' => !! option 'dist-tarZ',
5806 'GZIP' => ! option 'no-dist-gzip',
5807 'SHAR' => !! option 'dist-shar',
5808 'ZIP' => !! option 'dist-zip',
5809
5810 'INSTALL-INFO' => ! option 'no-installinfo',
5811 'INSTALL-MAN' => ! option 'no-installman',
5812 'CK-NEWS' => !! option 'check-news',
5813
5814 'SUBDIRS' => !! var ('SUBDIRS'),
5815 'TOPDIR' => backname ($relative_dir),
5816 'TOPDIR_P' => $relative_dir eq '.',
5817
5818 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5819 'HOST' => $seen_canonical,
5820 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5821
5822 'LIBTOOL' => !! var ('LIBTOOL'))
5823 # We don't need more than two consecutive new-lines.
5824 . 's/\n{3,}/\n\n/g';
5825
5826 # Swallow the file and apply the COMMAND.
5827 my $fc_file = new Automake::XFile "< $file";
5828 # Looks stupid?
5829 verb "reading $file";
5830 my $saved_dollar_slash = $/;
5831 undef $/;
5832 $_ = $fc_file->getline;
5833 $/ = $saved_dollar_slash;
5834 eval $command;
5835 $fc_file->close;
5836 my $content = $_;
5837
5838 # Split at unescaped new lines.
5839 my @lines = split (/(?<!\\)\n/, $content);
5840 my @res;
5841
5842 while (defined ($_ = shift @lines))
5843 {
5844 my $paragraph = "$_";
5845 # If we are a rule, eat as long as we start with a tab.
5846 if (/$RULE_PATTERN/smo)
5847 {
5848 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5849 {
5850 $paragraph .= "\n$_";
5851 }
5852 unshift (@lines, $_);
5853 }
5854
5855 # If we are a comments, eat as much comments as you can.
5856 elsif (/$COMMENT_PATTERN/smo)
5857 {
5858 while (defined ($_ = shift @lines)
5859 && $_ =~ /$COMMENT_PATTERN/smo)
5860 {
5861 $paragraph .= "\n$_";
5862 }
5863 unshift (@lines, $_);
5864 }
5865
5866 push @res, $paragraph;
5867 $paragraph = '';
5868 }
5869
5870 return @res;
5871}
5872
5873
5874
5875# ($COMMENT, $VARIABLES, $RULES)
5876# &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5877# -------------------------------------------------------------
5878# Return contents of a file from $libdir/am, automatically skipping
5879# macros or rules which are already known. $IS_AM iff the caller is
5880# reading an Automake file (as opposed to the user's Makefile.am).
5881sub file_contents_internal ($$$%)
5882{
5883 my ($is_am, $file, $where, %transform) = @_;
5884
5885 $where->set ($file);
5886
5887 my $result_vars = '';
5888 my $result_rules = '';
5889 my $comment = '';
5890 my $spacing = '';
5891
5892 # The following flags are used to track rules spanning across
5893 # multiple paragraphs.
5894 my $is_rule = 0; # 1 if we are processing a rule.
5895 my $discard_rule = 0; # 1 if the current rule should not be output.
5896
5897 # We save the conditional stack on entry, and then check to make
5898 # sure it is the same on exit. This lets us conditionally include
5899 # other files.
5900 my @saved_cond_stack = @cond_stack;
5901 my $cond = new Automake::Condition (@cond_stack);
5902
5903 foreach (make_paragraphs ($file, %transform))
5904 {
5905 # FIXME: no line number available.
5906 $where->set ($file);
5907
5908 # Sanity checks.
5909 error $where, "blank line following trailing backslash:\n$_"
5910 if /\\$/;
5911 error $where, "comment following trailing backslash:\n$_"
5912 if /\\#/;
5913
5914 if (/^$/)
5915 {
5916 $is_rule = 0;
5917 # Stick empty line before the incoming macro or rule.
5918 $spacing = "\n";
5919 }
5920 elsif (/$COMMENT_PATTERN/mso)
5921 {
5922 $is_rule = 0;
5923 # Stick comments before the incoming macro or rule.
5924 $comment = "$_\n";
5925 }
5926
5927 # Handle inclusion of other files.
5928 elsif (/$INCLUDE_PATTERN/o)
5929 {
5930 if ($cond != FALSE)
5931 {
5932 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5933 $where->push_context ("`$file' included from here");
5934 # N-ary `.=' fails.
5935 my ($com, $vars, $rules)
5936 = file_contents_internal ($is_am, $file, $where, %transform);
5937 $where->pop_context;
5938 $comment .= $com;
5939 $result_vars .= $vars;
5940 $result_rules .= $rules;
5941 }
5942 }
5943
5944 # Handling the conditionals.
5945 elsif (/$IF_PATTERN/o)
5946 {
5947 $cond = cond_stack_if ($1, $2, $file);
5948 }
5949 elsif (/$ELSE_PATTERN/o)
5950 {
5951 $cond = cond_stack_else ($1, $2, $file);
5952 }
5953 elsif (/$ENDIF_PATTERN/o)
5954 {
5955 $cond = cond_stack_endif ($1, $2, $file);
5956 }
5957
5958 # Handling rules.
5959 elsif (/$RULE_PATTERN/mso)
5960 {
5961 $is_rule = 1;
5962 $discard_rule = 0;
5963 # Separate relationship from optional actions: the first
5964 # `new-line tab" not preceded by backslash (continuation
5965 # line).
5966 my $paragraph = $_;
5967 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5968 my ($relationship, $actions) = ($1, $2 || '');
5969
5970 # Separate targets from dependencies: the first colon.
5971 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5972 my ($targets, $dependencies) = ($1, $2);
5973 # Remove the escaped new lines.
5974 # I don't know why, but I have to use a tmp $flat_deps.
5975 my $flat_deps = &flatten ($dependencies);
5976 my @deps = split (' ', $flat_deps);
5977
5978 foreach (split (' ' , $targets))
5979 {
5980 # FIXME: 1. We are not robust to people defining several targets
5981 # at once, only some of them being in %dependencies. The
5982 # actions from the targets in %dependencies are usually generated
5983 # from the content of %actions, but if some targets in $targets
5984 # are not in %dependencies the ELSE branch will output
5985 # a rule for all $targets (i.e. the targets which are both
5986 # in %dependencies and $targets will have two rules).
5987
5988 # FIXME: 2. The logic here is not able to output a
5989 # multi-paragraph rule several time (e.g. for each condition
5990 # it is defined for) because it only knows the first paragraph.
5991
5992 # FIXME: 3. We are not robust to people defining a subset
5993 # of a previously defined "multiple-target" rule. E.g.
5994 # `foo:' after `foo bar:'.
5995
5996 # Output only if not in FALSE.
5997 if (defined $dependencies{$_} && $cond != FALSE)
5998 {
5999 &depend ($_, @deps);
6000 if ($actions{$_})
6001 {
6002 $actions{$_} .= "\n$actions" if $actions;
6003 }
6004 else
6005 {
6006 $actions{$_} = $actions;
6007 }
6008 }
6009 else
6010 {
6011 # Free-lance dependency. Output the rule for all the
6012 # targets instead of one by one.
6013 my @undefined_conds =
6014 Automake::Rule::define ($targets, $file,
6015 $is_am ? RULE_AUTOMAKE : RULE_USER,
6016 $cond, $where);
6017 for my $undefined_cond (@undefined_conds)
6018 {
6019 my $condparagraph = $paragraph;
6020 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6021 $result_rules .= "$spacing$comment$condparagraph\n";
6022 }
6023 if (scalar @undefined_conds == 0)
6024 {
6025 # Remember to discard next paragraphs
6026 # if they belong to this rule.
6027 # (but see also FIXME: #2 above.)
6028 $discard_rule = 1;
6029 }
6030 $comment = $spacing = '';
6031 last;
6032 }
6033 }
6034 }
6035
6036 elsif (/$ASSIGNMENT_PATTERN/mso)
6037 {
6038 my ($var, $type, $val) = ($1, $2, $3);
6039 error $where, "variable `$var' with trailing backslash"
6040 if /\\$/;
6041
6042 $is_rule = 0;
6043
6044 Automake::Variable::define ($var,
6045 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6046 $type, $cond, $val, $comment, $where,
6047 VAR_ASIS)
6048 if $cond != FALSE;
6049
6050 $comment = $spacing = '';
6051 }
6052 else
6053 {
6054 # This isn't an error; it is probably some tokens which
6055 # configure is supposed to replace, such as `@SET-MAKE@',
6056 # or some part of a rule cut by an if/endif.
6057 if (! $cond->false && ! ($is_rule && $discard_rule))
6058 {
6059 s/^/$cond->subst_string/gme;
6060 $result_rules .= "$spacing$comment$_\n";
6061 }
6062 $comment = $spacing = '';
6063 }
6064 }
6065
6066 error ($where, @cond_stack ?
6067 "unterminated conditionals: @cond_stack" :
6068 "too many conditionals closed in include file")
6069 if "@saved_cond_stack" ne "@cond_stack";
6070
6071 return ($comment, $result_vars, $result_rules);
6072}
6073
6074
6075# $CONTENTS
6076# &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6077# ------------------------------------------------
6078# Return contents of a file from $libdir/am, automatically skipping
6079# macros or rules which are already known.
6080sub file_contents ($$%)
6081{
6082 my ($basename, $where, %transform) = @_;
6083 my ($comments, $variables, $rules) =
6084 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6085 %transform);
6086 return "$comments$variables$rules";
6087}
6088
6089
6090# $REGEXP
6091# &transform (%PAIRS)
6092# -------------------
6093# For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6094# suitable for file_contents which:
6095# - replaces %$TOKEN% with $VAL,
6096# - enables/disables ?$TOKEN? and ?!$TOKEN?,
6097# - replaces %?$TOKEN% with TRUE or FALSE.
6098sub transform (%)
6099{
6100 my (%pairs) = @_;
6101 my $result = '';
6102
6103 while (my ($token, $val) = each %pairs)
6104 {
6105 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6106 if ($val)
6107 {
6108 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6109 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6110 }
6111 else
6112 {
6113 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6114 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6115 }
6116 }
6117
6118 return $result;
6119}
6120
6121
6122# &append_exeext ($MACRO)
6123# -----------------------
6124# Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6125# bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6126sub append_exeext ($)
6127{
6128 my ($macro) = @_;
6129
6130 prog_error "append_exeext ($macro)"
6131 unless $macro =~ /_PROGRAMS$/;
6132
6133 transform_variable_recursively
6134 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6135 sub {
6136 my ($subvar, $val, $cond, $full_cond) = @_;
6137 # Append $(EXEEXT) unless the user did it already, or it's a
6138 # @substitution@.
6139 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6140 return $val;
6141 });
6142}
6143
6144
6145# @PREFIX
6146# &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6147# -----------------------------------------------------
6148# Find all variable prefixes that are used for install directories. A
6149# prefix `zar' qualifies iff:
6150#
6151# * `zardir' is a variable.
6152# * `zar_PRIMARY' is a variable.
6153#
6154# As a side effect, it looks for misspellings. It is an error to have
6155# a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6156# "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6157# of the same name (with "dir" appended) exists. For instance, if the
6158# variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6159# This is to provide a little extra flexibility in those cases which
6160# need it.
6161sub am_primary_prefixes ($$@)
6162{
6163 my ($primary, $can_dist, @prefixes) = @_;
6164
6165 local $_;
6166 my %valid = map { $_ => 0 } @prefixes;
6167 $valid{'EXTRA'} = 0;
6168 foreach my $var (variables)
6169 {
6170 # Automake is allowed to define variables that look like primaries
6171 # but which aren't. E.g. INSTALL_sh_DATA.
6172 # Autoconf can also define variables like INSTALL_DATA, so
6173 # ignore all configure variables (at least those which are not
6174 # redefined in Makefile.am).
6175 # FIXME: We should make sure that these variables are not
6176 # conditionally defined (or else adjust the condition below).
6177 my $def = $var->def (TRUE);
6178 next if $def && $def->owner != VAR_MAKEFILE;
6179
6180 my $varname = $var->name;
6181
6182 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6183 {
6184 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6185 if ($dist ne '' && ! $can_dist)
6186 {
6187 err_var ($var,
6188 "invalid variable `$varname': `dist' is forbidden");
6189 }
6190 # Standard directories must be explicitly allowed.
6191 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6192 {
6193 err_var ($var,
6194 "`${X}dir' is not a legitimate directory " .
6195 "for `$primary'");
6196 }
6197 # A not explicitly valid directory is allowed if Xdir is defined.
6198 elsif (! defined $valid{$X} &&
6199 $var->requires_variables ("`$varname' is used", "${X}dir"))
6200 {
6201 # Nothing to do. Any error message has been output
6202 # by $var->requires_variables.
6203 }
6204 else
6205 {
6206 # Ensure all extended prefixes are actually used.
6207 $valid{"$base$dist$X"} = 1;
6208 }
6209 }
6210 }
6211
6212 # Return only those which are actually defined.
6213 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6214}
6215
6216
6217# Handle `where_HOW' variable magic. Does all lookups, generates
6218# install code, and possibly generates code to define the primary
6219# variable. The first argument is the name of the .am file to munge,
6220# the second argument is the primary variable (e.g. HEADERS), and all
6221# subsequent arguments are possible installation locations.
6222#
6223# Returns list of [$location, $value] pairs, where
6224# $value's are the values in all where_HOW variable, and $location
6225# there associated location (the place here their parent variables were
6226# defined).
6227#
6228# FIXME: this should be rewritten to be cleaner. It should be broken
6229# up into multiple functions.
6230#
6231# Usage is: am_install_var (OPTION..., file, HOW, where...)
6232sub am_install_var
6233{
6234 my (@args) = @_;
6235
6236 my $do_require = 1;
6237 my $can_dist = 0;
6238 my $default_dist = 0;
6239 while (@args)
6240 {
6241 if ($args[0] eq '-noextra')
6242 {
6243 $do_require = 0;
6244 }
6245 elsif ($args[0] eq '-candist')
6246 {
6247 $can_dist = 1;
6248 }
6249 elsif ($args[0] eq '-defaultdist')
6250 {
6251 $default_dist = 1;
6252 $can_dist = 1;
6253 }
6254 elsif ($args[0] !~ /^-/)
6255 {
6256 last;
6257 }
6258 shift (@args);
6259 }
6260
6261 my ($file, $primary, @prefix) = @args;
6262
6263 # Now that configure substitutions are allowed in where_HOW
6264 # variables, it is an error to actually define the primary. We
6265 # allow `JAVA', as it is customarily used to mean the Java
6266 # interpreter. This is but one of several Java hacks. Similarly,
6267 # `PYTHON' is customarily used to mean the Python interpreter.
6268 reject_var $primary, "`$primary' is an anachronism"
6269 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6270
6271 # Get the prefixes which are valid and actually used.
6272 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6273
6274 # If a primary includes a configure substitution, then the EXTRA_
6275 # form is required. Otherwise we can't properly do our job.
6276 my $require_extra;
6277
6278 my @used = ();
6279 my @result = ();
6280
6281 # True if the iteration is the first one. Used for instance to
6282 # output parts of the associated file only once.
6283 my $first = 1;
6284 foreach my $X (@prefix)
6285 {
6286 my $nodir_name = $X;
6287 my $one_name = $X . '_' . $primary;
6288 my $one_var = var $one_name;
6289
6290 my $strip_subdir = 1;
6291 # If subdir prefix should be preserved, do so.
6292 if ($nodir_name =~ /^nobase_/)
6293 {
6294 $strip_subdir = 0;
6295 $nodir_name =~ s/^nobase_//;
6296 }
6297
6298 # If files should be distributed, do so.
6299 my $dist_p = 0;
6300 if ($can_dist)
6301 {
6302 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6303 || (! $default_dist && $nodir_name =~ /^dist_/));
6304 $nodir_name =~ s/^(dist|nodist)_//;
6305 }
6306
6307
6308 # Use the location of the currently processed variable.
6309 # We are not processing a particular condition, so pick the first
6310 # available.
6311 my $tmpcond = $one_var->conditions->one_cond;
6312 my $where = $one_var->rdef ($tmpcond)->location->clone;
6313
6314 # Append actual contents of where_PRIMARY variable to
6315 # @result, skipping @substitutions@.
6316 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6317 {
6318 my ($loc, $value) = @$locvals;
6319 # Skip configure substitutions.
6320 if ($value =~ /^\@.*\@$/)
6321 {
6322 if ($nodir_name eq 'EXTRA')
6323 {
6324 error ($where,
6325 "`$one_name' contains configure substitution, "
6326 . "but shouldn't");
6327 }
6328 # Check here to make sure variables defined in
6329 # configure.ac do not imply that EXTRA_PRIMARY
6330 # must be defined.
6331 elsif (! defined $configure_vars{$one_name})
6332 {
6333 $require_extra = $one_name
6334 if $do_require;
6335 }
6336 }
6337 else
6338 {
6339 push (@result, $locvals);
6340 }
6341 }
6342 # A blatant hack: we rewrite each _PROGRAMS primary to include
6343 # EXEEXT.
6344 append_exeext ($one_name)
6345 if $primary eq 'PROGRAMS';
6346 # "EXTRA" shouldn't be used when generating clean targets,
6347 # all, or install targets. We used to warn if EXTRA_FOO was
6348 # defined uselessly, but this was annoying.
6349 next
6350 if $nodir_name eq 'EXTRA';
6351
6352 if ($nodir_name eq 'check')
6353 {
6354 push (@check, '$(' . $one_name . ')');
6355 }
6356 else
6357 {
6358 push (@used, '$(' . $one_name . ')');
6359 }
6360
6361 # Is this to be installed?
6362 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6363
6364 # If so, with install-exec? (or install-data?).
6365 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6366
6367 my $check_options_p = $install_p && !! option 'std-options';
6368
6369 # Use the location of the currently processed variable as context.
6370 $where->push_context ("while processing `$one_name'");
6371
6372 # The variable containing all file to distribute.
6373 my $distvar = "\$($one_name)";
6374 $distvar = shadow_unconditionally ($one_name, $where)
6375 if ($dist_p && $one_var->has_conditional_contents);
6376
6377 # Singular form of $PRIMARY.
6378 (my $one_primary = $primary) =~ s/S$//;
6379 $output_rules .= &file_contents ($file, $where,
6380 FIRST => $first,
6381
6382 PRIMARY => $primary,
6383 ONE_PRIMARY => $one_primary,
6384 DIR => $X,
6385 NDIR => $nodir_name,
6386 BASE => $strip_subdir,
6387
6388 EXEC => $exec_p,
6389 INSTALL => $install_p,
6390 DIST => $dist_p,
6391 DISTVAR => $distvar,
6392 'CK-OPTS' => $check_options_p);
6393
6394 $first = 0;
6395 }
6396
6397 # The JAVA variable is used as the name of the Java interpreter.
6398 # The PYTHON variable is used as the name of the Python interpreter.
6399 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6400 {
6401 # Define it.
6402 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6403 $output_vars .= "\n";
6404 }
6405
6406 err_var ($require_extra,
6407 "`$require_extra' contains configure substitution,\n"
6408 . "but `EXTRA_$primary' not defined")
6409 if ($require_extra && ! var ('EXTRA_' . $primary));
6410
6411 # Push here because PRIMARY might be configure time determined.
6412 push (@all, '$(' . $primary . ')')
6413 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6414
6415 # Make the result unique. This lets the user use conditionals in
6416 # a natural way, but still lets us program lazily -- we don't have
6417 # to worry about handling a particular object more than once.
6418 # We will keep only one location per object.
6419 my %result = ();
6420 for my $pair (@result)
6421 {
6422 my ($loc, $val) = @$pair;
6423 $result{$val} = $loc;
6424 }
6425 my @l = sort keys %result;
6426 return map { [$result{$_}->clone, $_] } @l;
6427}
6428
6429
6430################################################################
6431
6432# Each key in this hash is the name of a directory holding a
6433# Makefile.in. These variables are local to `is_make_dir'.
6434my %make_dirs = ();
6435my $make_dirs_set = 0;
6436
6437sub is_make_dir
6438{
6439 my ($dir) = @_;
6440 if (! $make_dirs_set)
6441 {
6442 foreach my $iter (@configure_input_files)
6443 {
6444 $make_dirs{dirname ($iter)} = 1;
6445 }
6446 # We also want to notice Makefile.in's.
6447 foreach my $iter (@other_input_files)
6448 {
6449 if ($iter =~ /Makefile\.in$/)
6450 {
6451 $make_dirs{dirname ($iter)} = 1;
6452 }
6453 }
6454 $make_dirs_set = 1;
6455 }
6456 return defined $make_dirs{$dir};
6457}
6458
6459################################################################
6460
6461# This variable is local to the "require file" set of functions.
6462my @require_file_paths = ();
6463
6464
6465# &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6466# --------------------------------------------------
6467# See if we want to push this file onto dist_common. This function
6468# encodes the rules for deciding when to do so.
6469sub maybe_push_required_file
6470{
6471 my ($dir, $file, $fullfile) = @_;
6472
6473 if ($dir eq $relative_dir)
6474 {
6475 push_dist_common ($file);
6476 return 1;
6477 }
6478 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6479 {
6480 # If we are doing the topmost directory, and the file is in a
6481 # subdir which does not have a Makefile, then we distribute it
6482 # here.
6483
6484 # If a required file is above the source tree, it is important
6485 # to prefix it with `$(srcdir)' so that no VPATH search is
6486 # performed. Otherwise problems occur with Make implementations
6487 # that rewrite and simplify rules whose dependencies are found in a
6488 # VPATH location. Here is an example with OSF1/Tru64 Make.
6489 #
6490 # % cat Makefile
6491 # VPATH = sub
6492 # distdir: ../a
6493 # echo ../a
6494 # % ls
6495 # Makefile a
6496 # % make
6497 # echo a
6498 # a
6499 #
6500 # Dependency `../a' was found in `sub/../a', but this make
6501 # implementation simplified it as `a'. (Note that the sub/
6502 # directory does not even exist.)
6503 #
6504 # This kind of VPATH rewriting seems hard to cancel. The
6505 # distdir.am hack against VPATH rewriting works only when no
6506 # simplification is done, i.e., for dependencies which are in
6507 # subdirectories, not in enclosing directories. Hence, in
6508 # the latter case we use a full path to make sure no VPATH
6509 # search occurs.
6510 $fullfile = '$(srcdir)/' . $fullfile
6511 if $dir =~ m,^\.\.(?:$|/),;
6512
6513 push_dist_common ($fullfile);
6514 return 1;
6515 }
6516 return 0;
6517}
6518
6519
6520# &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6521# --------------------------------------------------
6522# Verify that the file must exist in the current directory.
6523# $MYSTRICT is the strictness level at which this file becomes required.
6524#
6525# Must set require_file_paths before calling this function.
6526# require_file_paths is set to hold a single directory (the one in
6527# which the first file was found) before return.
6528sub require_file_internal ($$@)
6529{
6530 my ($where, $mystrict, @files) = @_;
6531
6532 foreach my $file (@files)
6533 {
6534 my $fullfile;
6535 my $errdir;
6536 my $errfile;
6537 my $save_dir;
6538
6539 my $found_it = 0;
6540 my $dangling_sym = 0;
6541 foreach my $dir (@require_file_paths)
6542 {
6543 $fullfile = $dir . "/" . $file;
6544 $errdir = $dir unless $errdir;
6545
6546 # Use different name for "error filename". Otherwise on
6547 # an error the bad file will be reported as e.g.
6548 # `../../install-sh' when using the default
6549 # config_aux_path.
6550 $errfile = $errdir . '/' . $file;
6551
6552 if (-l $fullfile && ! -f $fullfile)
6553 {
6554 $dangling_sym = 1;
6555 last;
6556 }
6557 elsif (-f $fullfile)
6558 {
6559 $found_it = 1;
6560 maybe_push_required_file ($dir, $file, $fullfile);
6561 $save_dir = $dir;
6562 last;
6563 }
6564 }
6565
6566 # `--force-missing' only has an effect if `--add-missing' is
6567 # specified.
6568 if ($found_it && (! $add_missing || ! $force_missing))
6569 {
6570 # Prune the path list.
6571 @require_file_paths = $save_dir;
6572 }
6573 else
6574 {
6575 # If we've already looked for it, we're done. You might
6576 # wonder why we don't do this before searching for the
6577 # file. If we do that, then something like
6578 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6579 # DIST_COMMON.
6580 if (! $found_it)
6581 {
6582 next if defined $require_file_found{$fullfile};
6583 $require_file_found{$fullfile} = 1;
6584 }
6585
6586 if ($strictness >= $mystrict)
6587 {
6588 if ($dangling_sym && $add_missing)
6589 {
6590 unlink ($fullfile);
6591 }
6592
6593 my $trailer = '';
6594 my $suppress = 0;
6595
6596 # Only install missing files according to our desired
6597 # strictness level.
6598 my $message = "required file `$errfile' not found";
6599 if ($add_missing)
6600 {
6601 if (-f ("$libdir/$file"))
6602 {
6603 $suppress = 1;
6604
6605 # Install the missing file. Symlink if we
6606 # can, copy if we must. Note: delete the file
6607 # first, in case it is a dangling symlink.
6608 $message = "installing `$errfile'";
6609 # Windows Perl will hang if we try to delete a
6610 # file that doesn't exist.
6611 unlink ($errfile) if -f $errfile;
6612 if ($symlink_exists && ! $copy_missing)
6613 {
6614 if (! symlink ("$libdir/$file", $errfile))
6615 {
6616 $suppress = 0;
6617 $trailer = "; error while making link: $!";
6618 }
6619 }
6620 elsif (system ('cp', "$libdir/$file", $errfile))
6621 {
6622 $suppress = 0;
6623 $trailer = "\n error while copying";
6624 }
6625 }
6626
6627 if (! maybe_push_required_file (dirname ($errfile),
6628 $file, $errfile))
6629 {
6630 if (! $found_it)
6631 {
6632 # We have added the file but could not push it
6633 # into DIST_COMMON (probably because this is
6634 # an auxiliary file and we are not processing
6635 # the top level Makefile). This is unfortunate,
6636 # since it means we are using a file which is not
6637 # distributed!
6638
6639 # Get Automake to be run again: on the second
6640 # run the file will be found, and pushed into
6641 # the toplevel DIST_COMMON automatically.
6642 $automake_needs_to_reprocess_all_files = 1;
6643 }
6644 }
6645
6646 # Prune the path list.
6647 @require_file_paths = &dirname ($errfile);
6648 }
6649
6650 # If --force-missing was specified, and we have
6651 # actually found the file, then do nothing.
6652 next
6653 if $found_it && $force_missing;
6654
6655 # If we couldn' install the file, but it is a target in
6656 # the Makefile, don't print anything. This allows files
6657 # like README, AUTHORS, or THANKS to be generated.
6658 next
6659 if !$suppress && rule $file;
6660
6661 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6662 }
6663 }
6664 }
6665}
6666
6667# &require_file ($WHERE, $MYSTRICT, @FILES)
6668# -----------------------------------------
6669sub require_file ($$@)
6670{
6671 my ($where, $mystrict, @files) = @_;
6672 @require_file_paths = $relative_dir;
6673 require_file_internal ($where, $mystrict, @files);
6674}
6675
6676# &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6677# -----------------------------------------------------------
6678sub require_file_with_macro ($$$@)
6679{
6680 my ($cond, $macro, $mystrict, @files) = @_;
6681 $macro = rvar ($macro) unless ref $macro;
6682 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6683}
6684
6685
6686# &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6687# ----------------------------------------------
6688# Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6689sub require_conf_file ($$@)
6690{
6691 my ($where, $mystrict, @files) = @_;
6692 @require_file_paths = @config_aux_path;
6693 require_file_internal ($where, $mystrict, @files);
6694 my $dir = $require_file_paths[0];
6695 @config_aux_path = @require_file_paths;
6696 # Avoid unsightly '/.'s.
6697 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6698}
6699
6700
6701# &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6702# ----------------------------------------------------------------
6703sub require_conf_file_with_macro ($$$@)
6704{
6705 my ($cond, $macro, $mystrict, @files) = @_;
6706 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6707 $mystrict, @files);
6708}
6709
6710################################################################
6711
6712# &require_build_directory ($DIRECTORY)
6713# ------------------------------------
6714# Emit rules to create $DIRECTORY if needed, and return
6715# the file that any target requiring this directory should be made
6716# dependent upon.
6717sub require_build_directory ($)
6718{
6719 my $directory = shift;
6720 my $dirstamp = "$directory/\$(am__dirstamp)";
6721
6722 # Don't emit the rule twice.
6723 if (! defined $directory_map{$directory})
6724 {
6725 $directory_map{$directory} = 1;
6726
6727 # Set a variable for the dirstamp basename.
6728 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6729 '$(am__leading_dot)dirstamp');
6730
6731 # Directory must be removed by `make distclean'.
6732 $clean_files{$dirstamp} = DIST_CLEAN;
6733
6734 $output_rules .= ("$dirstamp:\n"
6735 . "\t\@\$(mkdir_p) $directory\n"
6736 . "\t\@: > $dirstamp\n");
6737 }
6738
6739 return $dirstamp;
6740}
6741
6742# &require_build_directory_maybe ($FILE)
6743# --------------------------------------
6744# If $FILE lies in a subdirectory, emit a rule to create this
6745# directory and return the file that $FILE should be made
6746# dependent upon. Otherwise, just return the empty string.
6747sub require_build_directory_maybe ($)
6748{
6749 my $file = shift;
6750 my $directory = dirname ($file);
6751
6752 if ($directory ne '.')
6753 {
6754 return require_build_directory ($directory);
6755 }
6756 else
6757 {
6758 return '';
6759 }
6760}
6761
6762################################################################
6763
6764# Push a list of files onto dist_common.
6765sub push_dist_common
6766{
6767 prog_error "push_dist_common run after handle_dist"
6768 if $handle_dist_run;
6769 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6770 '', INTERNAL, VAR_PRETTY);
6771}
6772
6773
6774################################################################
6775
6776# generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6777# ----------------------------------------------
6778# Generate a Makefile.in given the name of the corresponding Makefile and
6779# the name of the file output by config.status.
6780sub generate_makefile ($$)
6781{
6782 my ($makefile_am, $makefile_in) = @_;
6783
6784 # Reset all the Makefile.am related variables.
6785 initialize_per_input;
6786
6787 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6788 # warnings for this file. So hold any warning issued before
6789 # we have processed AUTOMAKE_OPTIONS.
6790 buffer_messages ('warning');
6791
6792 # Name of input file ("Makefile.am") and output file
6793 # ("Makefile.in"). These have no directory components.
6794 $am_file_name = basename ($makefile_am);
6795 $in_file_name = basename ($makefile_in);
6796
6797 # $OUTPUT is encoded. If it contains a ":" then the first element
6798 # is the real output file, and all remaining elements are input
6799 # files. We don't scan or otherwise deal with these input files,
6800 # other than to mark them as dependencies. See
6801 # &scan_autoconf_files for details.
6802 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6803
6804 $relative_dir = dirname ($makefile);
6805 $am_relative_dir = dirname ($makefile_am);
6806
6807 read_main_am_file ($makefile_am);
6808 if (handle_options)
6809 {
6810 # Process buffered warnings.
6811 flush_messages;
6812 # Fatal error. Just return, so we can continue with next file.
6813 return;
6814 }
6815 # Process buffered warnings.
6816 flush_messages;
6817
6818 # There are a few install-related variables that you should not define.
6819 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6820 {
6821 my $v = var $var;
6822 if ($v)
6823 {
6824 my $def = $v->def (TRUE);
6825 prog_error "$var not defined in condition TRUE"
6826 unless $def;
6827 reject_var $var, "`$var' should not be defined"
6828 if $def->owner != VAR_AUTOMAKE;
6829 }
6830 }
6831
6832 # Catch some obsolete variables.
6833 msg_var ('obsolete', 'INCLUDES',
6834 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6835 if var ('INCLUDES');
6836
6837 # At the toplevel directory, we might need config.guess, config.sub
6838 # or libtool scripts (ltconfig and ltmain.sh).
6839 if ($relative_dir eq '.')
6840 {
6841 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6842 # config.sub.
6843 require_conf_file ($canonical_location, FOREIGN,
6844 'config.guess', 'config.sub')
6845 if $seen_canonical;
6846 }
6847
6848 # Must do this after reading .am file.
6849 define_variable ('subdir', $relative_dir, INTERNAL);
6850
6851 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6852 # recursive rules are enabled.
6853 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6854 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6855
6856 # Check first, because we might modify some state.
6857 check_cygnus;
6858 check_gnu_standards;
6859 check_gnits_standards;
6860
6861 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6862 handle_gettext;
6863 handle_libraries;
6864 handle_ltlibraries;
6865 handle_programs;
6866 handle_scripts;
6867
6868 # This must run first so that the ANSI2KNR definition is generated
6869 # before it is used by the _.c rules. We have to do this because
6870 # a variable which is used in a dependency must be defined before
6871 # the target, or else make won't properly see it.
6872 handle_compile;
6873 # This must be run after all the sources are scanned.
6874 handle_languages;
6875
6876 # We have to run this after dealing with all the programs.
6877 handle_libtool;
6878
6879 # Variables used by distdir.am and tags.am.
6880 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6881 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6882
6883 handle_multilib;
6884 handle_texinfo;
6885 handle_emacs_lisp;
6886 handle_python;
6887 handle_java;
6888 handle_man_pages;
6889 handle_data;
6890 handle_headers;
6891 handle_subdirs;
6892 handle_tags;
6893 handle_minor_options;
6894 handle_tests;
6895
6896 # This must come after most other rules.
6897 handle_dist;
6898
6899 handle_footer;
6900 do_check_merge_target;
6901 handle_all ($makefile);
6902
6903 # FIXME: Gross!
6904 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6905 {
6906 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6907 }
6908
6909 handle_install;
6910 handle_clean ($makefile);
6911 handle_factored_dependencies;
6912
6913 # Comes last, because all the above procedures may have
6914 # defined or overridden variables.
6915 $output_vars .= output_variables;
6916
6917 check_typos;
6918
6919 if (! -d ($output_directory . '/' . $am_relative_dir))
6920 {
6921 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6922 }
6923
6924 my ($out_file) = $output_directory . '/' . $makefile_in;
6925
6926 # We make sure that `all:' is the first target.
6927 my $output =
6928 "$output_vars$output_all$output_header$output_rules$output_trailer";
6929
6930 # Decide whether we must update the output file or not.
6931 # We have to update in the following situations.
6932 # * $force_generation is set.
6933 # * any of the output dependencies is younger than the output
6934 # * the contents of the output is different (this can happen
6935 # if the project has been populated with a file listed in
6936 # @common_files since the last run).
6937 # Output's dependencies are split in two sets:
6938 # * dependencies which are also configure dependencies
6939 # These do not change between each Makefile.am
6940 # * other dependencies, specific to the Makefile.am being processed
6941 # (such as the Makefile.am itself, or any Makefile fragment
6942 # it includes).
6943 my $timestamp = mtime $out_file;
6944 if (! $force_generation
6945 && $configure_deps_greatest_timestamp < $timestamp
6946 && $output_deps_greatest_timestamp < $timestamp
6947 && $output eq contents ($out_file))
6948 {
6949 verb "$out_file unchanged";
6950 # No need to update.
6951 return;
6952 }
6953
6954 if (-e $out_file)
6955 {
6956 unlink ($out_file)
6957 or fatal "cannot remove $out_file: $!\n";
6958 }
6959
6960 my $gm_file = new Automake::XFile "> $out_file";
6961 verb "creating $out_file";
6962 print $gm_file $output;
6963}
6964
6965################################################################
6966
6967
6968
6969
6970################################################################
6971
6972# Print usage information.
6973sub usage ()
6974{
6975 print "Usage: $0 [OPTION] ... [Makefile]...
6976
6977Generate Makefile.in for configure from Makefile.am.
6978
6979Operation modes:
6980 --help print this help, then exit
6981 --version print version number, then exit
6982 -v, --verbose verbosely list files processed
6983 --no-force only update Makefile.in's that are out of date
6984 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6985
6986Dependency tracking:
6987 -i, --ignore-deps disable dependency tracking code
6988 --include-deps enable dependency tracking code
6989
6990Flavors:
6991 --cygnus assume program is part of Cygnus-style tree
6992 --foreign set strictness to foreign
6993 --gnits set strictness to gnits
6994 --gnu set strictness to gnu
6995
6996Library files:
6997 -a, --add-missing add missing standard files to package
6998 --libdir=DIR directory storing library files
6999 -c, --copy with -a, copy missing files (default is symlink)
7000 -f, --force-missing force update of standard files
7001
7002";
7003 Automake::ChannelDefs::usage;
7004
7005 my ($last, @lcomm);
7006 $last = '';
7007 foreach my $iter (sort ((@common_files, @common_sometimes)))
7008 {
7009 push (@lcomm, $iter) unless $iter eq $last;
7010 $last = $iter;
7011 }
7012
7013 my @four;
7014 print "\nFiles which are automatically distributed, if found:\n";
7015 format USAGE_FORMAT =
7016 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7017 $four[0], $four[1], $four[2], $four[3]
7018.
7019 $~ = "USAGE_FORMAT";
7020
7021 my $cols = 4;
7022 my $rows = int(@lcomm / $cols);
7023 my $rest = @lcomm % $cols;
7024
7025 if ($rest)
7026 {
7027 $rows++;
7028 }
7029 else
7030 {
7031 $rest = $cols;
7032 }
7033
7034 for (my $y = 0; $y < $rows; $y++)
7035 {
7036 @four = ("", "", "", "");
7037 for (my $x = 0; $x < $cols; $x++)
7038 {
7039 last if $y + 1 == $rows && $x == $rest;
7040
7041 my $idx = (($x > $rest)
7042 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7043 : ($rows * $x));
7044
7045 $idx += $y;
7046 $four[$x] = $lcomm[$idx];
7047 }
7048 write;
7049 }
7050
7051 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7052
7053 # --help always returns 0 per GNU standards.
7054 exit 0;
7055}
7056
7057
7058# &version ()
7059# -----------
7060# Print version information
7061sub version ()
7062{
7063 print <<EOF;
7064automake (GNU $PACKAGE) $VERSION
7065Written by Tom Tromey <tromey\@redhat.com>.
7066
7067Copyright 2004 Free Software Foundation, Inc.
7068This is free software; see the source for copying conditions. There is NO
7069warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7070EOF
7071 # --version always returns 0 per GNU standards.
7072 exit 0;
7073}
7074
7075################################################################
7076
7077# Parse command line.
7078sub parse_arguments ()
7079{
7080 # Start off as gnu.
7081 set_strictness ('gnu');
7082
7083 my $cli_where = new Automake::Location;
7084 my %cli_options =
7085 (
7086 'libdir:s' => \$libdir,
7087 'gnu' => sub { set_strictness ('gnu'); },
7088 'gnits' => sub { set_strictness ('gnits'); },
7089 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7090 'foreign' => sub { set_strictness ('foreign'); },
7091 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7092 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7093 $cli_where); },
7094 'no-force' => sub { $force_generation = 0; },
7095 'f|force-missing' => \$force_missing,
7096 'o|output-dir:s' => \$output_directory,
7097 'a|add-missing' => \$add_missing,
7098 'c|copy' => \$copy_missing,
7099 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7100 'W|warnings:s' => \&parse_warnings,
7101 # These long options (--Werror and --Wno-error) for backward
7102 # compatibility. Use -Werror and -Wno-error today.
7103 'Werror' => sub { parse_warnings 'W', 'error'; },
7104 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7105 );
7106 use Getopt::Long;
7107 Getopt::Long::config ("bundling", "pass_through");
7108
7109 # See if --version or --help is used. We want to process these before
7110 # anything else because the GNU Coding Standards require us to
7111 # `exit 0' after processing these options, and we can't guarantee this
7112 # if we treat other options first. (Handling other options first
7113 # could produce error diagnostics, and in this condition it is
7114 # confusing if Automake does `exit 0'.)
7115 my %cli_options_1st_pass =
7116 (
7117 'version' => \&version,
7118 'help' => \&usage,
7119 # Recognize all other options (and their arguments) but do nothing.
7120 map { $_ => sub {} } (keys %cli_options)
7121 );
7122 my @ARGV_backup = @ARGV;
7123 Getopt::Long::GetOptions %cli_options_1st_pass
7124 or exit 1;
7125 @ARGV = @ARGV_backup;
7126
7127 # Now *really* process the options. This time we know
7128 # that --help and --version are not present.
7129 Getopt::Long::GetOptions %cli_options
7130 or exit 1;
7131
7132 if (defined $output_directory)
7133 {
7134 msg 'obsolete', "`--output-dir' is deprecated\n";
7135 }
7136 else
7137 {
7138 # In the next release we'll remove this entirely.
7139 $output_directory = '.';
7140 }
7141
7142 my $errspec = 0;
7143 foreach my $arg (@ARGV)
7144 {
7145 if ($arg =~ /^-./)
7146 {
7147 fatal ("unrecognized option `$arg'\n"
7148 . "Try `$0 --help' for more information.");
7149 }
7150
7151 # Handle $local:$input syntax.
7152 my ($local, @rest) = split (/:/, $arg);
7153 @rest = ("$local.in",) unless @rest;
7154 my $input = locate_am @rest;
7155 if ($input)
7156 {
7157 push @input_files, $input;
7158 $output_files{$input} = join (':', ($local, @rest));
7159 }
7160 else
7161 {
7162 error "no Automake input file found for `$arg'";
7163 $errspec = 1;
7164 }
7165 }
7166 fatal "no input file found among supplied arguments"
7167 if $errspec && ! @input_files;
7168}
7169
7170################################################################
7171
7172# Parse the WARNINGS environment variable.
7173parse_WARNINGS;
7174
7175# Parse command line.
7176parse_arguments;
7177
7178$configure_ac = require_configure_ac;
7179
7180# Do configure.ac scan only once.
7181scan_autoconf_files;
7182
7183if (! @input_files)
7184 {
7185 my $msg = '';
7186 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7187 if -f 'Makefile.am';
7188 fatal ("no `Makefile.am' found for any configure output$msg");
7189 }
7190
7191my $automake_has_run = 0;
7192
7193do
7194{
7195 if ($automake_has_run)
7196 {
7197 verb 'processing Makefiles another time to fix them up.';
7198 prog_error 'running more than two times should never be needed.'
7199 if $automake_has_run >= 2;
7200 }
7201 $automake_needs_to_reprocess_all_files = 0;
7202
7203 # Now do all the work on each file.
7204 foreach my $file (@input_files)
7205 {
7206 ($am_file = $file) =~ s/\.in$//;
7207 if (! -f ($am_file . '.am'))
7208 {
7209 error "`$am_file.am' does not exist";
7210 }
7211 else
7212 {
7213 # Any warning setting now local to this Makefile.am.
7214 dup_channel_setup;
7215
7216 generate_makefile ($am_file . '.am', $file);
7217
7218 # Back out any warning setting.
7219 drop_channel_setup;
7220 }
7221 }
7222 ++$automake_has_run;
7223}
7224while ($automake_needs_to_reprocess_all_files);
7225
7226exit $exit_code;
7227
7228
7229### Setup "GNU" style for perl-mode and cperl-mode.
7230## Local Variables:
7231## perl-indent-level: 2
7232## perl-continued-statement-offset: 2
7233## perl-continued-brace-offset: 0
7234## perl-brace-offset: 0
7235## perl-brace-imaginary-offset: 0
7236## perl-label-offset: -2
7237## cperl-indent-level: 2
7238## cperl-brace-offset: 0
7239## cperl-continued-brace-offset: 0
7240## cperl-label-offset: -2
7241## cperl-extra-newline-before-brace: t
7242## cperl-merge-trailing-else: nil
7243## cperl-continued-statement-offset: 2
7244## End:
Note: See TracBrowser for help on using the repository browser.