| 1 | #!@PERL@ -w
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| 2 | # -*- perl -*-
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| 3 | # @configure_input@
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| 4 |
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| 5 | eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
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| 6 | if 0;
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| 7 |
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| 8 | # aclocal - create aclocal.m4 by scanning configure.ac
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| 9 |
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| 10 | # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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| 11 | # 2005, 2006 Free Software Foundation, Inc.
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| 12 |
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| 13 | # This program is free software; you can redistribute it and/or modify
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| 14 | # it under the terms of the GNU General Public License as published by
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| 15 | # the Free Software Foundation; either version 2, or (at your option)
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| 16 | # any later version.
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| 17 |
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| 18 | # This program is distributed in the hope that it will be useful,
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| 19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 21 | # GNU General Public License for more details.
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| 22 |
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| 23 | # You should have received a copy of the GNU General Public License
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| 24 | # along with this program; if not, write to the Free Software
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| 25 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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| 26 | # 02110-1301, USA.
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| 27 |
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| 28 | # Written by Tom Tromey <tromey@redhat.com>, and
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| 29 | # Alexandre Duret-Lutz <adl@gnu.org>.
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| 30 |
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| 31 | BEGIN
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| 32 | {
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| 33 | my $perllibdir = $ENV{'perllibdir'} || $ENV{'UNIXROOT'}.'@datadir@/@PACKAGE@-@APIVERSION@';
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| 34 | $perllibdir =~ s/$ENV{'UNIXROOT'}\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
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| 35 | $perllibdir =~ s/\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
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| 36 | unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
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| 37 | }
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| 38 |
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| 39 | use strict;
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| 40 |
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| 41 | use Automake::Config;
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| 42 | use Automake::General;
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| 43 | use Automake::Configure_ac;
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| 44 | use Automake::Channels;
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| 45 | use Automake::ChannelDefs;
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| 46 | use Automake::XFile;
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| 47 | use Automake::FileUtils;
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| 48 | use File::Basename;
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| 49 | use File::stat;
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| 50 | use Cwd;
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| 51 |
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| 52 | # Some globals.
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| 53 |
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| 54 | # Include paths for searching macros. We search macros in this order:
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| 55 | # user-supplied directories first, then the directory containing the
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| 56 | # automake macros, and finally the system-wide directories for
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| 57 | # third-party macro. @user_includes can be augmented with -I.
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| 58 | # @system_includes can be augmented with the `dirlist' file. Also
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| 59 | # --acdir will reset both @automake_includes and @system_includes.
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| 60 | my @user_includes = ();
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| 61 | my $my_acdir = $ENV{'UNIXROOT'}.'@datadir@/aclocal';
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| 62 | $my_acdir =~ s/$ENV{'UNIXROOT'}\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
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| 63 | $my_acdir =~ s/\/\@unixroot/$ENV{'UNIXROOT'}/; # The EMX built perl doesn't know @unixroot.
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| 64 | my @automake_includes = ("$my_acdir-$APIVERSION");
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| 65 | my @system_includes = ("$my_acdir");
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| 66 |
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| 67 | # Whether we should copy M4 file in $user_includes[0].
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| 68 | my $install = 0;
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| 69 |
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| 70 | # --diff
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| 71 | my @diff_command;
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| 72 |
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| 73 | # --dry-run
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| 74 | my $dry_run = 0;
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| 75 |
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| 76 | # configure.ac or configure.in.
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| 77 | my $configure_ac;
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| 78 |
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| 79 | # Output file name.
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| 80 | my $output_file = 'aclocal.m4';
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| 81 |
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| 82 | # Option --force.
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| 83 | my $force_output = 0;
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| 84 |
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| 85 | # Modification time of the youngest dependency.
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| 86 | my $greatest_mtime = 0;
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| 87 |
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| 88 | # Which macros have been seen.
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| 89 | my %macro_seen = ();
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| 90 |
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| 91 | # Remember the order into which we scanned the files.
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| 92 | # It's important to output the contents of aclocal.m4 in the opposite order.
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| 93 | # (Definitions in first files we have scanned should override those from
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| 94 | # later files. So they must appear last in the output.)
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| 95 | my @file_order = ();
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| 96 |
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| 97 | # Map macro names to file names.
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| 98 | my %map = ();
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| 99 |
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| 100 | # Ditto, but records the last definition of each macro as returned by --trace.
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| 101 | my %map_traced_defs = ();
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| 102 |
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| 103 | # Map basenames to macro names.
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| 104 | my %invmap = ();
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| 105 |
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| 106 | # Map file names to file contents.
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| 107 | my %file_contents = ();
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| 108 |
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| 109 | # Map file names to file types.
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| 110 | my %file_type = ();
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| 111 | use constant FT_USER => 1;
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| 112 | use constant FT_AUTOMAKE => 2;
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| 113 | use constant FT_SYSTEM => 3;
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| 114 |
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| 115 | # Map file names to included files (transitively closed).
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| 116 | my %file_includes = ();
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| 117 |
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| 118 | # Files which have already been added.
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| 119 | my %file_added = ();
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| 120 |
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| 121 | # Files that have already been scanned.
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| 122 | my %scanned_configure_dep = ();
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| 123 |
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| 124 | # Serial numbers, for files that have one.
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| 125 | # The key is the basename of the file,
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| 126 | # the value is the serial number represented as a list.
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| 127 | my %serial = ();
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| 128 |
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| 129 | # Matches a macro definition.
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| 130 | # AC_DEFUN([macroname], ...)
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| 131 | # or
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| 132 | # AC_DEFUN(macroname, ...)
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| 133 | # When macroname is `['-quoted , we accept any character in the name,
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| 134 | # except `]'. Otherwise macroname stops on the first `]', `,', `)',
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| 135 | # or `\n' encountered.
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| 136 | my $ac_defun_rx =
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| 137 | "(?:AU_ALIAS|A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
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| 138 |
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| 139 | # Matches an AC_REQUIRE line.
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| 140 | my $ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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| 141 |
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| 142 | # Matches an m4_include line.
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| 143 | my $m4_include_rx = "(m4_|m4_s|s)include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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| 144 |
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| 145 | # Match a serial number.
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| 146 | my $serial_line_rx = '^#\s*serial\s+(\S*)';
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| 147 | my $serial_number_rx = '^\d+(?:\.\d+)*$';
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| 148 |
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| 149 | # Autoconf version
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| 150 | # Set by trace_used_macros.
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| 151 | my $ac_version;
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| 152 |
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| 153 | # If set, names a temporary file that must be erased on abnormal exit.
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| 154 | my $erase_me;
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| 155 | |
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| 156 |
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| 157 | ################################################################
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| 158 |
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| 159 | # Erase temporary file ERASE_ME.
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| 160 | sub unlink_tmp
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| 161 | {
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| 162 | if (defined $erase_me && -e $erase_me && !unlink ($erase_me))
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| 163 | {
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| 164 | fatal "could not remove `$erase_me': $!";
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| 165 | }
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| 166 | undef $erase_me;
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| 167 | }
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| 168 |
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| 169 | $SIG{'INT'} = $SIG{'TERM'} = $SIG{'QUIT'} = $SIG{'HUP'} = 'unlink_tmp';
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| 170 | END { unlink_tmp }
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| 171 |
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| 172 | # Check macros in acinclude.m4. If one is not used, warn.
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| 173 | sub check_acinclude ()
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| 174 | {
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| 175 | foreach my $key (keys %map)
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| 176 | {
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| 177 | # FIXME: should print line number of acinclude.m4.
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| 178 | msg ('syntax', "warning: macro `$key' defined in "
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| 179 | . "acinclude.m4 but never used")
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| 180 | if $map{$key} eq 'acinclude.m4' && ! exists $macro_seen{$key};
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| 181 | }
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| 182 | }
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| 183 |
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| 184 | sub reset_maps ()
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| 185 | {
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| 186 | $greatest_mtime = 0;
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| 187 | %macro_seen = ();
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| 188 | @file_order = ();
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| 189 | %map = ();
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| 190 | %map_traced_defs = ();
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| 191 | %file_contents = ();
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| 192 | %file_type = ();
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| 193 | %file_includes = ();
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| 194 | %file_added = ();
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| 195 | %scanned_configure_dep = ();
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| 196 | %invmap = ();
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| 197 | %serial = ();
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| 198 | undef &search;
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| 199 | }
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| 200 |
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| 201 | # install_file ($SRC, $DEST)
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| 202 | sub install_file ($$)
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| 203 | {
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| 204 | my ($src, $dest) = @_;
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| 205 | my $diff_dest;
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| 206 |
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| 207 | if ($force_output
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| 208 | || !exists $file_contents{$dest}
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| 209 | || $file_contents{$src} ne $file_contents{$dest})
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| 210 | {
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| 211 | if (-e $dest)
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| 212 | {
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| 213 | msg 'note', "overwriting `$dest' with `$src'";
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| 214 | $diff_dest = $dest;
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| 215 | }
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| 216 | else
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| 217 | {
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| 218 | msg 'note', "installing `$dest' from `$src'";
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| 219 | }
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| 220 |
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| 221 | if (@diff_command)
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| 222 | {
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| 223 | if (! defined $diff_dest)
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| 224 | {
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| 225 | # $dest does not exist. We create an empty one just to
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| 226 | # run diff, and we erase it afterward. Using the real
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| 227 | # the destination file (rather than a temporary file) is
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| 228 | # good when diff is run with options that display the
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| 229 | # file name.
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| 230 | #
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| 231 | # If creating $dest fails, fall back to /dev/null. At
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| 232 | # least one diff implementation (Tru64's) cannot deal
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| 233 | # with /dev/null. However working around this is not
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| 234 | # worth the trouble since nobody run aclocal on a
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| 235 | # read-only tree anyway.
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| 236 | $erase_me = $dest;
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| 237 | my $f = new IO::File "> $dest";
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| 238 | if (! defined $f)
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| 239 | {
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| 240 | undef $erase_me;
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| 241 | $diff_dest = '/dev/null';
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| 242 | }
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| 243 | else
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| 244 | {
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| 245 | $diff_dest = $dest;
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| 246 | $f->close;
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| 247 | }
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| 248 | }
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| 249 | my @cmd = (@diff_command, $diff_dest, $src);
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| 250 | $! = 0;
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| 251 | verb "running: @cmd";
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| 252 | my $res = system (@cmd);
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| 253 | Automake::FileUtils::handle_exec_errors "@cmd", 1
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| 254 | if $res;
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| 255 | unlink_tmp;
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| 256 | }
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| 257 | elsif (!$dry_run)
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| 258 | {
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| 259 | xsystem ('cp', $src, $dest);
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| 260 | }
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| 261 | }
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| 262 | }
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| 263 |
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| 264 | # Compare two lists of numbers.
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| 265 | sub list_compare (\@\@)
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| 266 | {
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| 267 | my @l = @{$_[0]};
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| 268 | my @r = @{$_[1]};
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| 269 | while (1)
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| 270 | {
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| 271 | if (0 == @l)
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| 272 | {
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| 273 | return (0 == @r) ? 0 : -1;
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| 274 | }
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| 275 | elsif (0 == @r)
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| 276 | {
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| 277 | return 1;
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| 278 | }
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| 279 | elsif ($l[0] < $r[0])
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| 280 | {
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| 281 | return -1;
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| 282 | }
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| 283 | elsif ($l[0] > $r[0])
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| 284 | {
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| 285 | return 1;
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| 286 | }
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| 287 | shift @l;
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| 288 | shift @r;
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| 289 | }
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| 290 | }
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| 291 |
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| 292 | ################################################################
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| 293 |
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| 294 | # scan_m4_dirs($TYPE, @DIRS)
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| 295 | # --------------------------
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| 296 | # Scan all M4 files installed in @DIRS for new macro definitions.
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| 297 | # Register each file as of type $TYPE (one of the FT_* constants).
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| 298 | sub scan_m4_dirs ($@)
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| 299 | {
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| 300 | my ($type, @dirlist) = @_;
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| 301 |
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| 302 | foreach my $m4dir (@dirlist)
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| 303 | {
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| 304 | if (! opendir (DIR, $m4dir))
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| 305 | {
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| 306 | fatal "couldn't open directory `$m4dir': $!";
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| 307 | }
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| 308 |
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| 309 | # We reverse the directory contents so that foo2.m4 gets
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| 310 | # used in preference to foo1.m4.
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| 311 | foreach my $file (reverse sort grep (! /^\./, readdir (DIR)))
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| 312 | {
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| 313 | # Only examine .m4 files.
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| 314 | next unless $file =~ /\.m4$/;
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| 315 |
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| 316 | # Skip some files when running out of srcdir.
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| 317 | next if $file eq 'aclocal.m4';
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| 318 |
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| 319 | my $fullfile = File::Spec->canonpath ("$m4dir/$file");
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| 320 | &scan_file ($type, $fullfile, 'aclocal');
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| 321 | }
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| 322 | closedir (DIR);
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| 323 | }
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| 324 | }
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| 325 |
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| 326 | # Scan all the installed m4 files and construct a map.
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| 327 | sub scan_m4_files ()
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| 328 | {
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| 329 | # First, scan configure.ac. It may contain macro definitions,
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| 330 | # or may include other files that define macros.
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| 331 | &scan_file (FT_USER, $configure_ac, 'aclocal');
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| 332 |
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| 333 | # Then, scan acinclude.m4 if it exists.
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| 334 | if (-f 'acinclude.m4')
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| 335 | {
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| 336 | &scan_file (FT_USER, 'acinclude.m4', 'aclocal');
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| 337 | }
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| 338 |
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| 339 | # Finally, scan all files in our search paths.
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| 340 | scan_m4_dirs (FT_USER, @user_includes);
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| 341 | scan_m4_dirs (FT_AUTOMAKE, @automake_includes);
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| 342 | scan_m4_dirs (FT_SYSTEM, @system_includes);
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| 343 |
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| 344 | # Construct a new function that does the searching. We use a
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| 345 | # function (instead of just evaluating $search in the loop) so that
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| 346 | # "die" is correctly and easily propagated if run.
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| 347 | my $search = "sub search {\nmy \$found = 0;\n";
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| 348 | foreach my $key (reverse sort keys %map)
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| 349 | {
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| 350 | $search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
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| 351 | . '"); $found = 1; }' . "\n");
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| 352 | }
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| 353 | $search .= "return \$found;\n};\n";
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| 354 | eval $search;
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| 355 | prog_error "$@\n search is $search" if $@;
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| 356 | }
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| 357 |
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| 358 | ################################################################
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| 359 |
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| 360 | # Add a macro to the output.
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| 361 | sub add_macro ($)
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| 362 | {
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| 363 | my ($macro) = @_;
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| 364 |
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| 365 | # Ignore unknown required macros. Either they are not really
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| 366 | # needed (e.g., a conditional AC_REQUIRE), in which case aclocal
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| 367 | # should be quiet, or they are needed and Autoconf itself will
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| 368 | # complain when we trace for macro usage later.
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| 369 | return unless defined $map{$macro};
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| 370 |
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| 371 | verb "saw macro $macro";
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| 372 | $macro_seen{$macro} = 1;
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| 373 | &add_file ($map{$macro});
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| 374 | }
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| 375 |
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| 376 | # scan_configure_dep ($file)
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| 377 | # --------------------------
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| 378 | # Scan a configure dependency (configure.ac, or separate m4 files)
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| 379 | # for uses of known macros and AC_REQUIREs of possibly unknown macros.
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| 380 | # Recursively scan m4_included files.
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| 381 | sub scan_configure_dep ($)
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| 382 | {
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| 383 | my ($file) = @_;
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| 384 | # Do not scan a file twice.
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| 385 | return ()
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| 386 | if exists $scanned_configure_dep{$file};
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| 387 | $scanned_configure_dep{$file} = 1;
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| 388 |
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| 389 | my $mtime = mtime $file;
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| 390 | $greatest_mtime = $mtime if $greatest_mtime < $mtime;
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| 391 |
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| 392 | my $contents = exists $file_contents{$file} ?
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| 393 | $file_contents{$file} : contents $file;
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| 394 |
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| 395 | my $line = 0;
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| 396 | my @rlist = ();
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| 397 | my @ilist = ();
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| 398 | foreach (split ("\n", $contents))
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| 399 | {
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| 400 | ++$line;
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| 401 | # Remove comments from current line.
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| 402 | s/\bdnl\b.*$//;
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| 403 | s/\#.*$//;
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| 404 | # Avoid running all the following regexes on white lines.
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| 405 | next if /^\s*$/;
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| 406 |
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| 407 | while (/$m4_include_rx/go)
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| 408 | {
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| 409 | my $ifile = $2 || $3;
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| 410 | # Skip missing `sinclude'd files.
|
|---|
| 411 | next if $1 ne 'm4_' && ! -f $ifile;
|
|---|
| 412 | push @ilist, $ifile;
|
|---|
| 413 | }
|
|---|
| 414 |
|
|---|
| 415 | while (/$ac_require_rx/go)
|
|---|
| 416 | {
|
|---|
| 417 | push (@rlist, $1 || $2);
|
|---|
| 418 | }
|
|---|
| 419 |
|
|---|
| 420 | # The search function is constructed dynamically by
|
|---|
| 421 | # scan_m4_files. The last parenthetical match makes sure we
|
|---|
| 422 | # don't match things that look like macro assignments or
|
|---|
| 423 | # AC_SUBSTs.
|
|---|
| 424 | if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
|
|---|
| 425 | {
|
|---|
| 426 | # Macro not found, but AM_ prefix found.
|
|---|
| 427 | # Make this just a warning, because we do not know whether
|
|---|
| 428 | # the macro is actually used (it could be called conditionally).
|
|---|
| 429 | msg ('unsupported', "$file:$line",
|
|---|
| 430 | "warning: macro `$2' not found in library");
|
|---|
| 431 | }
|
|---|
| 432 | }
|
|---|
| 433 |
|
|---|
| 434 | add_macro ($_) foreach (@rlist);
|
|---|
| 435 | &scan_configure_dep ($_) foreach @ilist;
|
|---|
| 436 | }
|
|---|
| 437 |
|
|---|
| 438 | # add_file ($FILE)
|
|---|
| 439 | # ----------------
|
|---|
| 440 | # Add $FILE to output.
|
|---|
| 441 | sub add_file ($)
|
|---|
| 442 | {
|
|---|
| 443 | my ($file) = @_;
|
|---|
| 444 |
|
|---|
| 445 | # Only add a file once.
|
|---|
| 446 | return if ($file_added{$file});
|
|---|
| 447 | $file_added{$file} = 1;
|
|---|
| 448 |
|
|---|
| 449 | scan_configure_dep $file;
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 | # Point to the documentation for underquoted AC_DEFUN only once.
|
|---|
| 453 | my $underquoted_manual_once = 0;
|
|---|
| 454 |
|
|---|
| 455 | # scan_file ($TYPE, $FILE, $WHERE)
|
|---|
| 456 | # --------------------------------
|
|---|
| 457 | # Scan a single M4 file ($FILE), and all files it includes.
|
|---|
| 458 | # Return the list of included files.
|
|---|
| 459 | # $TYPE is one of FT_USER, FT_AUTOMAKE, or FT_SYSTEM, depending
|
|---|
| 460 | # on where the file comes from.
|
|---|
| 461 | # $WHERE is the location to use in the diagnostic if the file
|
|---|
| 462 | # does not exist.
|
|---|
| 463 | sub scan_file ($$$)
|
|---|
| 464 | {
|
|---|
| 465 | my ($type, $file, $where) = @_;
|
|---|
| 466 | my $basename = basename $file;
|
|---|
| 467 |
|
|---|
| 468 | # Do not scan the same file twice.
|
|---|
| 469 | return @{$file_includes{$file}} if exists $file_includes{$file};
|
|---|
| 470 | # Prevent potential infinite recursion (if two files include each other).
|
|---|
| 471 | return () if exists $file_contents{$file};
|
|---|
| 472 |
|
|---|
| 473 | unshift @file_order, $file;
|
|---|
| 474 |
|
|---|
| 475 | $file_type{$file} = $type;
|
|---|
| 476 |
|
|---|
| 477 | fatal "$where: file `$file' does not exist" if ! -e $file;
|
|---|
| 478 |
|
|---|
| 479 | my $fh = new Automake::XFile $file;
|
|---|
| 480 | my $contents = '';
|
|---|
| 481 | my @inc_files = ();
|
|---|
| 482 | my %inc_lines = ();
|
|---|
| 483 |
|
|---|
| 484 | my $defun_seen = 0;
|
|---|
| 485 | my $serial_seen = 0;
|
|---|
| 486 | my $serial_older = 0;
|
|---|
| 487 |
|
|---|
| 488 | while ($_ = $fh->getline)
|
|---|
| 489 | {
|
|---|
| 490 | # Ignore `##' lines.
|
|---|
| 491 | next if /^##/;
|
|---|
| 492 |
|
|---|
| 493 | $contents .= $_;
|
|---|
| 494 | my $line = $_;
|
|---|
| 495 |
|
|---|
| 496 | if ($line =~ /$serial_line_rx/go)
|
|---|
| 497 | {
|
|---|
| 498 | my $number = $1;
|
|---|
| 499 | if ($number !~ /$serial_number_rx/go)
|
|---|
| 500 | {
|
|---|
| 501 | msg ('syntax', "$file:$.",
|
|---|
| 502 | "warning: ill-formed serial number `$number', "
|
|---|
| 503 | . "expecting a version string with only digits and dots");
|
|---|
| 504 | }
|
|---|
| 505 | elsif ($defun_seen)
|
|---|
| 506 | {
|
|---|
| 507 | # aclocal removes all definitions from M4 file with the
|
|---|
| 508 | # same basename if a greater serial number is found.
|
|---|
| 509 | # Encountering a serial after some macros will undefine
|
|---|
| 510 | # these macros...
|
|---|
| 511 | msg ('syntax', "$file:$.",
|
|---|
| 512 | 'the serial number must appear before any macro definition');
|
|---|
| 513 | }
|
|---|
| 514 | # We really care about serials only for non-automake macros
|
|---|
| 515 | # and when --install is used. But the above diagnostics are
|
|---|
| 516 | # made regardless of this, because not using --install is
|
|---|
| 517 | # not a reason not the fix macro files.
|
|---|
| 518 | elsif ($install && $type != FT_AUTOMAKE)
|
|---|
| 519 | {
|
|---|
| 520 | $serial_seen = 1;
|
|---|
| 521 | my @new = split (/\./, $number);
|
|---|
| 522 |
|
|---|
| 523 | verb "$file:$.: serial $number";
|
|---|
| 524 |
|
|---|
| 525 | if (!exists $serial{$basename}
|
|---|
| 526 | || list_compare (@new, @{$serial{$basename}}) > 0)
|
|---|
| 527 | {
|
|---|
| 528 | # Delete any definition we knew from the old macro.
|
|---|
| 529 | foreach my $def (@{$invmap{$basename}})
|
|---|
| 530 | {
|
|---|
| 531 | verb "$file:$.: ignoring previous definition of $def";
|
|---|
| 532 | delete $map{$def};
|
|---|
| 533 | }
|
|---|
| 534 | $invmap{$basename} = [];
|
|---|
| 535 | $serial{$basename} = \@new;
|
|---|
| 536 | }
|
|---|
| 537 | else
|
|---|
| 538 | {
|
|---|
| 539 | $serial_older = 1;
|
|---|
| 540 | }
|
|---|
| 541 | }
|
|---|
| 542 | }
|
|---|
| 543 |
|
|---|
| 544 | # Remove comments from current line.
|
|---|
| 545 | # Do not do it earlier, because the serial line is a comment.
|
|---|
| 546 | $line =~ s/\bdnl\b.*$//;
|
|---|
| 547 | $line =~ s/\#.*$//;
|
|---|
| 548 |
|
|---|
| 549 | while ($line =~ /$ac_defun_rx/go)
|
|---|
| 550 | {
|
|---|
| 551 | $defun_seen = 1;
|
|---|
| 552 | if (! defined $1)
|
|---|
| 553 | {
|
|---|
| 554 | msg ('syntax', "$file:$.", "warning: underquoted definition of $2"
|
|---|
| 555 | . "\n run info '(automake)Extending aclocal'\n"
|
|---|
| 556 | . " or see http://sources.redhat.com/automake/"
|
|---|
| 557 | . "automake.html#Extending-aclocal")
|
|---|
| 558 | unless $underquoted_manual_once;
|
|---|
| 559 | $underquoted_manual_once = 1;
|
|---|
| 560 | }
|
|---|
| 561 |
|
|---|
| 562 | # If this macro does not have a serial and we have already
|
|---|
| 563 | # seen a macro with the same basename earlier, we should
|
|---|
| 564 | # ignore the macro (don't exit immediately so we can still
|
|---|
| 565 | # diagnose later #serial numbers and underquoted macros).
|
|---|
| 566 | $serial_older ||= ($type != FT_AUTOMAKE
|
|---|
| 567 | && !$serial_seen && exists $serial{$basename});
|
|---|
| 568 |
|
|---|
| 569 | my $macro = $1 || $2;
|
|---|
| 570 | if (!$serial_older && !defined $map{$macro})
|
|---|
| 571 | {
|
|---|
| 572 | verb "found macro $macro in $file: $.";
|
|---|
| 573 | $map{$macro} = $file;
|
|---|
| 574 | push @{$invmap{$basename}}, $macro;
|
|---|
| 575 | }
|
|---|
| 576 | else
|
|---|
| 577 | {
|
|---|
| 578 | # Note: we used to give an error here if we saw a
|
|---|
| 579 | # duplicated macro. However, this turns out to be
|
|---|
| 580 | # extremely unpopular. It causes actual problems which
|
|---|
| 581 | # are hard to work around, especially when you must
|
|---|
| 582 | # mix-and-match tool versions.
|
|---|
| 583 | verb "ignoring macro $macro in $file: $.";
|
|---|
| 584 | }
|
|---|
| 585 | }
|
|---|
| 586 |
|
|---|
| 587 | while ($line =~ /$m4_include_rx/go)
|
|---|
| 588 | {
|
|---|
| 589 | my $ifile = $2 || $3;
|
|---|
| 590 | # Skip missing `sinclude'd files.
|
|---|
| 591 | next if $1 ne 'm4_' && ! -f $ifile;
|
|---|
| 592 | push (@inc_files, $ifile);
|
|---|
| 593 | $inc_lines{$ifile} = $.;
|
|---|
| 594 | }
|
|---|
| 595 | }
|
|---|
| 596 |
|
|---|
| 597 | # Ignore any file that has an old serial (or no serial if we know
|
|---|
| 598 | # another one with a serial).
|
|---|
| 599 | return ()
|
|---|
| 600 | if ($serial_older ||
|
|---|
| 601 | ($type != FT_AUTOMAKE && !$serial_seen && exists $serial{$basename}));
|
|---|
| 602 |
|
|---|
| 603 | $file_contents{$file} = $contents;
|
|---|
| 604 |
|
|---|
| 605 | # For some reason I don't understand, it does not work
|
|---|
| 606 | # to do `map { scan_file ($_, ...) } @inc_files' below.
|
|---|
| 607 | # With Perl 5.8.2 it undefines @inc_files.
|
|---|
| 608 | my @copy = @inc_files;
|
|---|
| 609 | my @all_inc_files = (@inc_files,
|
|---|
| 610 | map { scan_file ($type, $_,
|
|---|
| 611 | "$file:$inc_lines{$_}") } @copy);
|
|---|
| 612 | $file_includes{$file} = \@all_inc_files;
|
|---|
| 613 | return @all_inc_files;
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | # strip_redundant_includes (%FILES)
|
|---|
| 617 | # ---------------------------------
|
|---|
| 618 | # Each key in %FILES is a file that must be present in the output.
|
|---|
| 619 | # However some of these files might already include other files in %FILES,
|
|---|
| 620 | # so there is no point in including them another time.
|
|---|
| 621 | # This removes items of %FILES which are already included by another file.
|
|---|
| 622 | sub strip_redundant_includes (%)
|
|---|
| 623 | {
|
|---|
| 624 | my %files = @_;
|
|---|
| 625 |
|
|---|
| 626 | # Always include acinclude.m4, even if it does not appear to be used.
|
|---|
| 627 | $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
|
|---|
| 628 | # File included by $configure_ac are redundant.
|
|---|
| 629 | $files{$configure_ac} = 1;
|
|---|
| 630 |
|
|---|
| 631 | # Files at the end of @file_order should override those at the beginning,
|
|---|
| 632 | # so it is important to preserve these trailing files. We can remove
|
|---|
| 633 | # a file A if it is going to be output before a file B that includes
|
|---|
| 634 | # file A, not the converse.
|
|---|
| 635 | foreach my $file (reverse @file_order)
|
|---|
| 636 | {
|
|---|
| 637 | next unless exists $files{$file};
|
|---|
| 638 | foreach my $ifile (@{$file_includes{$file}})
|
|---|
| 639 | {
|
|---|
| 640 | next unless exists $files{$ifile};
|
|---|
| 641 | delete $files{$ifile};
|
|---|
| 642 | verb "$ifile is already included by $file";
|
|---|
| 643 | }
|
|---|
| 644 | }
|
|---|
| 645 |
|
|---|
| 646 | # configure.ac is implicitly included.
|
|---|
| 647 | delete $files{$configure_ac};
|
|---|
| 648 |
|
|---|
| 649 | return %files;
|
|---|
| 650 | }
|
|---|
| 651 |
|
|---|
| 652 | sub trace_used_macros ()
|
|---|
| 653 | {
|
|---|
| 654 | my %files = map { $map{$_} => 1 } keys %macro_seen;
|
|---|
| 655 | %files = strip_redundant_includes %files;
|
|---|
| 656 |
|
|---|
| 657 | my $traces = ($ENV{AUTOM4TE} || 'autom4te');
|
|---|
| 658 | $traces .= " --language Autoconf-without-aclocal-m4 ";
|
|---|
| 659 | # All candidate files.
|
|---|
| 660 | $traces .= join (' ', grep { exists $files{$_} } @file_order) . " ";
|
|---|
| 661 | # All candidate macros.
|
|---|
| 662 | $traces .= join (' ',
|
|---|
| 663 | (map { "--trace='$_:\$f::\$n::\$1'" }
|
|---|
| 664 | ('AC_DEFUN',
|
|---|
| 665 | 'AC_DEFUN_ONCE',
|
|---|
| 666 | 'AU_DEFUN',
|
|---|
| 667 | '_AM_AUTOCONF_VERSION')),
|
|---|
| 668 | # Do not trace $1 for all other macros as we do
|
|---|
| 669 | # not need it and it might contains harmful
|
|---|
| 670 | # characters (like newlines).
|
|---|
| 671 | (map { "--trace='$_:\$f::\$n'" } (keys %macro_seen)));
|
|---|
| 672 |
|
|---|
| 673 | verb "running $traces $configure_ac";
|
|---|
| 674 |
|
|---|
| 675 | my $tracefh = new Automake::XFile ("$traces $configure_ac |");
|
|---|
| 676 |
|
|---|
| 677 | my %traced = ();
|
|---|
| 678 |
|
|---|
| 679 | while ($_ = $tracefh->getline)
|
|---|
| 680 | {
|
|---|
| 681 | chomp;
|
|---|
| 682 | # Stupid, stupid unix guys.
|
|---|
| 683 | #my ($file, $macro, $arg1) = split (/:/);
|
|---|
| 684 | my ($file, $macro, $arg1, $dos) = split (/:/);
|
|---|
| 685 | if (length($file) == 1 && $dos ne '')
|
|---|
| 686 | {
|
|---|
| 687 | $file = $file.":".$macro;
|
|---|
| 688 | $macro = $arg1;
|
|---|
| 689 | $arg1 = $dos;
|
|---|
| 690 | }
|
|---|
| 691 |
|
|---|
| 692 | $traced{$macro} = 1 if exists $macro_seen{$macro};
|
|---|
| 693 |
|
|---|
| 694 | $map_traced_defs{$arg1} = $file
|
|---|
| 695 | if ($macro eq 'AC_DEFUN'
|
|---|
| 696 | || $macro eq 'AC_DEFUN_ONCE'
|
|---|
| 697 | || $macro eq 'AU_DEFUN');
|
|---|
| 698 |
|
|---|
| 699 | $ac_version = $arg1 if $macro eq '_AM_AUTOCONF_VERSION';
|
|---|
| 700 | }
|
|---|
| 701 |
|
|---|
| 702 | $tracefh->close;
|
|---|
| 703 |
|
|---|
| 704 | return %traced;
|
|---|
| 705 | }
|
|---|
| 706 |
|
|---|
| 707 | sub scan_configure ()
|
|---|
| 708 | {
|
|---|
| 709 | # Make sure we include acinclude.m4 if it exists.
|
|---|
| 710 | if (-f 'acinclude.m4')
|
|---|
| 711 | {
|
|---|
| 712 | add_file ('acinclude.m4');
|
|---|
| 713 | }
|
|---|
| 714 | scan_configure_dep ($configure_ac);
|
|---|
| 715 | }
|
|---|
| 716 |
|
|---|
| 717 | ################################################################
|
|---|
| 718 |
|
|---|
| 719 | # Write output.
|
|---|
| 720 | # Return 0 iff some files were installed locally.
|
|---|
| 721 | sub write_aclocal ($@)
|
|---|
| 722 | {
|
|---|
| 723 | my ($output_file, @macros) = @_;
|
|---|
| 724 | my $output = '';
|
|---|
| 725 |
|
|---|
| 726 | my %files = ();
|
|---|
| 727 | # Get the list of files containing definitions for the macros used.
|
|---|
| 728 | # (Filter out unused macro definitions with $map_traced_defs. This
|
|---|
| 729 | # can happen when an Autoconf macro is conditionally defined:
|
|---|
| 730 | # aclocal sees the potential definition, but this definition is
|
|---|
| 731 | # actually never processed and the Autoconf implementation is used
|
|---|
| 732 | # instead.)
|
|---|
| 733 | for my $m (@macros)
|
|---|
| 734 | {
|
|---|
| 735 | $files{$map{$m}} = 1
|
|---|
| 736 | if (exists $map_traced_defs{$m}
|
|---|
| 737 | && $map{$m} eq $map_traced_defs{$m});
|
|---|
| 738 | }
|
|---|
| 739 | # Do not explicitly include a file that is already indirectly included.
|
|---|
| 740 | %files = strip_redundant_includes %files;
|
|---|
| 741 |
|
|---|
| 742 | my $installed = 0;
|
|---|
| 743 |
|
|---|
| 744 | for my $file (grep { exists $files{$_} } @file_order)
|
|---|
| 745 | {
|
|---|
| 746 | # Check the time stamp of this file, and of all files it includes.
|
|---|
| 747 | for my $ifile ($file, @{$file_includes{$file}})
|
|---|
| 748 | {
|
|---|
| 749 | my $mtime = mtime $ifile;
|
|---|
| 750 | $greatest_mtime = $mtime if $greatest_mtime < $mtime;
|
|---|
| 751 | }
|
|---|
| 752 |
|
|---|
| 753 | # If the file to add looks like outside the project, copy it
|
|---|
| 754 | # to the output. The regex catches filenames starting with
|
|---|
| 755 | # things like `/', `\', or `c:\'.
|
|---|
| 756 | if ($file_type{$file} != FT_USER
|
|---|
| 757 | || $file =~ m,^(?:\w:)?[\\/],)
|
|---|
| 758 | {
|
|---|
| 759 | if (!$install || $file_type{$file} != FT_SYSTEM)
|
|---|
| 760 | {
|
|---|
| 761 | # Copy the file into aclocal.m4.
|
|---|
| 762 | $output .= $file_contents{$file} . "\n";
|
|---|
| 763 | }
|
|---|
| 764 | else
|
|---|
| 765 | {
|
|---|
| 766 | # Install the file (and any file it includes).
|
|---|
| 767 | my $dest;
|
|---|
| 768 | for my $ifile (@{$file_includes{$file}}, $file)
|
|---|
| 769 | {
|
|---|
| 770 | $dest = "$user_includes[0]/" . basename $ifile;
|
|---|
| 771 | verb "installing $ifile to $dest";
|
|---|
| 772 | install_file ($ifile, $dest);
|
|---|
| 773 | }
|
|---|
| 774 | $installed = 1;
|
|---|
| 775 | }
|
|---|
| 776 | }
|
|---|
| 777 | else
|
|---|
| 778 | {
|
|---|
| 779 | # Otherwise, simply include the file.
|
|---|
| 780 | $output .= "m4_include([$file])\n";
|
|---|
| 781 | }
|
|---|
| 782 | }
|
|---|
| 783 |
|
|---|
| 784 | if ($installed)
|
|---|
| 785 | {
|
|---|
| 786 | verb "running aclocal anew, because some files were installed locally";
|
|---|
| 787 | return 0;
|
|---|
| 788 | }
|
|---|
| 789 |
|
|---|
| 790 | # Nothing to output?!
|
|---|
| 791 | # FIXME: Shouldn't we diagnose this?
|
|---|
| 792 | return 1 if ! length ($output);
|
|---|
| 793 |
|
|---|
| 794 | if ($ac_version)
|
|---|
| 795 | {
|
|---|
| 796 | # Do not use "$output_file" here for the same reason we do not
|
|---|
| 797 | # use it in the header below. autom4te will output the name of
|
|---|
| 798 | # the file in the diagnostic anyway.
|
|---|
| 799 | $output = "m4_if(m4_PACKAGE_VERSION, [$ac_version],,
|
|---|
| 800 | [m4_fatal([this file was generated for autoconf $ac_version.
|
|---|
| 801 | You have another version of autoconf. If you want to use that,
|
|---|
| 802 | you should regenerate the build system entirely.], [63])])
|
|---|
| 803 |
|
|---|
| 804 | $output";
|
|---|
| 805 | }
|
|---|
| 806 |
|
|---|
| 807 | # We used to print `# $output_file generated automatically etc.' But
|
|---|
| 808 | # this creates spurious differences when using autoreconf. Autoreconf
|
|---|
| 809 | # creates aclocal.m4t and then rename it to aclocal.m4, but the
|
|---|
| 810 | # rebuild rules generated by Automake create aclocal.m4 directly --
|
|---|
| 811 | # this would gives two ways to get the same file, with a different
|
|---|
| 812 | # name in the header.
|
|---|
| 813 | $output = "# generated automatically by aclocal $VERSION -*- Autoconf -*-
|
|---|
| 814 |
|
|---|
| 815 | # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
|
|---|
| 816 | # 2005, 2006 Free Software Foundation, Inc.
|
|---|
| 817 | # This file is free software; the Free Software Foundation
|
|---|
| 818 | # gives unlimited permission to copy and/or distribute it,
|
|---|
| 819 | # with or without modifications, as long as this notice is preserved.
|
|---|
| 820 |
|
|---|
| 821 | # This program is distributed in the hope that it will be useful,
|
|---|
| 822 | # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
|
|---|
| 823 | # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
|
|---|
| 824 | # PARTICULAR PURPOSE.
|
|---|
| 825 |
|
|---|
| 826 | $output";
|
|---|
| 827 |
|
|---|
| 828 | # We try not to update $output_file unless necessary, because
|
|---|
| 829 | # doing so invalidate Autom4te's cache and therefore slows down
|
|---|
| 830 | # tools called after aclocal.
|
|---|
| 831 | #
|
|---|
| 832 | # We need to overwrite $output_file in the following situations.
|
|---|
| 833 | # * The --force option is in use.
|
|---|
| 834 | # * One of the dependencies is younger.
|
|---|
| 835 | # (Not updating $output_file in this situation would cause
|
|---|
| 836 | # make to call aclocal in loop.)
|
|---|
| 837 | # * The contents of the current file are different from what
|
|---|
| 838 | # we have computed.
|
|---|
| 839 | if (!$force_output
|
|---|
| 840 | && $greatest_mtime < mtime ($output_file)
|
|---|
| 841 | && $output eq contents ($output_file))
|
|---|
| 842 | {
|
|---|
| 843 | verb "$output_file unchanged";
|
|---|
| 844 | return 1;
|
|---|
| 845 | }
|
|---|
| 846 |
|
|---|
| 847 | verb "writing $output_file";
|
|---|
| 848 |
|
|---|
| 849 | if (!$dry_run)
|
|---|
| 850 | {
|
|---|
| 851 | if (-e $output_file && !unlink $output_file)
|
|---|
| 852 | {
|
|---|
| 853 | fatal "could not remove `$output_file': $!";
|
|---|
| 854 | }
|
|---|
| 855 | my $out = new Automake::XFile "> $output_file";
|
|---|
| 856 | print $out $output;
|
|---|
| 857 | }
|
|---|
| 858 | return 1;
|
|---|
| 859 | }
|
|---|
| 860 |
|
|---|
| 861 | ################################################################
|
|---|
| 862 |
|
|---|
| 863 | # Print usage and exit.
|
|---|
| 864 | sub usage ($)
|
|---|
| 865 | {
|
|---|
| 866 | my ($status) = @_;
|
|---|
| 867 |
|
|---|
| 868 | print "Usage: aclocal [OPTIONS] ...
|
|---|
| 869 |
|
|---|
| 870 | Generate `aclocal.m4' by scanning `configure.ac' or `configure.in'
|
|---|
| 871 |
|
|---|
| 872 | Options:
|
|---|
| 873 | --acdir=DIR directory holding config files (for debugging)
|
|---|
| 874 | --diff[=COMMAND] run COMMAND [diff -u] on M4 files that would be
|
|---|
| 875 | changed (implies --install and --dry-run)
|
|---|
| 876 | --dry-run pretend to, but do not actually update any file
|
|---|
| 877 | --force always update output file
|
|---|
| 878 | --help print this help, then exit
|
|---|
| 879 | -I DIR add directory to search list for .m4 files
|
|---|
| 880 | --install copy third-party files to the first -I directory
|
|---|
| 881 | --output=FILE put output in FILE (default aclocal.m4)
|
|---|
| 882 | --print-ac-dir print name of directory holding m4 files, then exit
|
|---|
| 883 | --verbose don't be silent
|
|---|
| 884 | --version print version number, then exit
|
|---|
| 885 | -W, --warnings=CATEGORY report the warnings falling in CATEGORY
|
|---|
| 886 |
|
|---|
| 887 | Warning categories include:
|
|---|
| 888 | `syntax' dubious syntactic constructs (default)
|
|---|
| 889 | `unsupported' unknown macros (default)
|
|---|
| 890 | `all' all the warnings (default)
|
|---|
| 891 | `no-CATEGORY' turn off warnings in CATEGORY
|
|---|
| 892 | `none' turn off all the warnings
|
|---|
| 893 | `error' treat warnings as errors
|
|---|
| 894 |
|
|---|
| 895 | Report bugs to <bug-automake\@gnu.org>.\n";
|
|---|
| 896 |
|
|---|
| 897 | exit $status;
|
|---|
| 898 | }
|
|---|
| 899 |
|
|---|
| 900 | # Print version and exit.
|
|---|
| 901 | sub version()
|
|---|
| 902 | {
|
|---|
| 903 | print <<EOF;
|
|---|
| 904 | aclocal (GNU $PACKAGE) $VERSION
|
|---|
| 905 | Written by Tom Tromey <tromey\@redhat.com>
|
|---|
| 906 | and Alexandre Duret-Lutz <adl\@gnu.org>.
|
|---|
| 907 |
|
|---|
| 908 | Copyright (C) 2006 Free Software Foundation, Inc.
|
|---|
| 909 | This is free software; see the source for copying conditions. There is NO
|
|---|
| 910 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|---|
| 911 | EOF
|
|---|
| 912 | exit 0;
|
|---|
| 913 | }
|
|---|
| 914 |
|
|---|
| 915 | # Parse command line.
|
|---|
| 916 | sub parse_arguments ()
|
|---|
| 917 | {
|
|---|
| 918 | my $print_and_exit = 0;
|
|---|
| 919 | my $diff_command;
|
|---|
| 920 |
|
|---|
| 921 | my %cli_options =
|
|---|
| 922 | (
|
|---|
| 923 | 'acdir=s' => sub # Setting --acdir overrides both the
|
|---|
| 924 | { # automake (versioned) directory and the
|
|---|
| 925 | # public (unversioned) system directory.
|
|---|
| 926 | @automake_includes = ();
|
|---|
| 927 | @system_includes = ($_[1])
|
|---|
| 928 | },
|
|---|
| 929 | 'diff:s' => \$diff_command,
|
|---|
| 930 | 'dry-run' => \$dry_run,
|
|---|
| 931 | 'force' => \$force_output,
|
|---|
| 932 | 'I=s' => \@user_includes,
|
|---|
| 933 | 'install' => \$install,
|
|---|
| 934 | 'output=s' => \$output_file,
|
|---|
| 935 | 'print-ac-dir' => \$print_and_exit,
|
|---|
| 936 | 'verbose' => sub { setup_channel 'verb', silent => 0; },
|
|---|
| 937 | 'W|warnings=s' => \&parse_warnings,
|
|---|
| 938 | );
|
|---|
| 939 | use Getopt::Long;
|
|---|
| 940 | Getopt::Long::config ("bundling", "pass_through");
|
|---|
| 941 |
|
|---|
| 942 | # See if --version or --help is used. We want to process these before
|
|---|
| 943 | # anything else because the GNU Coding Standards require us to
|
|---|
| 944 | # `exit 0' after processing these options, and we can't guarantee this
|
|---|
| 945 | # if we treat other options first. (Handling other options first
|
|---|
| 946 | # could produce error diagnostics, and in this condition it is
|
|---|
| 947 | # confusing if aclocal does `exit 0'.)
|
|---|
| 948 | my %cli_options_1st_pass =
|
|---|
| 949 | (
|
|---|
| 950 | 'version' => \&version,
|
|---|
| 951 | 'help' => sub { usage(0); },
|
|---|
| 952 | # Recognize all other options (and their arguments) but do nothing.
|
|---|
| 953 | map { $_ => sub {} } (keys %cli_options)
|
|---|
| 954 | );
|
|---|
| 955 | my @ARGV_backup = @ARGV;
|
|---|
| 956 | Getopt::Long::GetOptions %cli_options_1st_pass
|
|---|
| 957 | or exit 1;
|
|---|
| 958 | @ARGV = @ARGV_backup;
|
|---|
| 959 |
|
|---|
| 960 | # Now *really* process the options. This time we know that --help
|
|---|
| 961 | # and --version are not present, but we specify them nonetheless so
|
|---|
| 962 | # that ambiguous abbreviation are diagnosed.
|
|---|
| 963 | Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
|
|---|
| 964 | or exit 1;
|
|---|
| 965 |
|
|---|
| 966 | if (@ARGV)
|
|---|
| 967 | {
|
|---|
| 968 | my %argopts;
|
|---|
| 969 | for my $k (keys %cli_options)
|
|---|
| 970 | {
|
|---|
| 971 | if ($k =~ /(.*)=s$/)
|
|---|
| 972 | {
|
|---|
| 973 | map { $argopts{(length ($_) == 1)
|
|---|
| 974 | ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
|
|---|
| 975 | }
|
|---|
| 976 | }
|
|---|
| 977 | if (exists $argopts{$ARGV[0]})
|
|---|
| 978 | {
|
|---|
| 979 | fatal ("option `$ARGV[0]' requires an argument\n"
|
|---|
| 980 | . "Try `$0 --help' for more information.");
|
|---|
| 981 | }
|
|---|
| 982 | else
|
|---|
| 983 | {
|
|---|
| 984 | fatal ("unrecognized option `$ARGV[0]'\n"
|
|---|
| 985 | . "Try `$0 --help' for more information.");
|
|---|
| 986 | }
|
|---|
| 987 | }
|
|---|
| 988 |
|
|---|
| 989 | if ($print_and_exit)
|
|---|
| 990 | {
|
|---|
| 991 | print "@system_includes\n";
|
|---|
| 992 | exit 0;
|
|---|
| 993 | }
|
|---|
| 994 |
|
|---|
| 995 | if (defined $diff_command)
|
|---|
| 996 | {
|
|---|
| 997 | $diff_command = 'diff -u' if $diff_command eq '';
|
|---|
| 998 | @diff_command = split (' ', $diff_command);
|
|---|
| 999 | $install = 1;
|
|---|
| 1000 | $dry_run = 1;
|
|---|
| 1001 | }
|
|---|
| 1002 |
|
|---|
| 1003 | if ($install && !@user_includes)
|
|---|
| 1004 | {
|
|---|
| 1005 | fatal ("--install should copy macros in the directory indicated by the"
|
|---|
| 1006 | . "\nfirst -I option, but no -I was supplied.");
|
|---|
| 1007 | }
|
|---|
| 1008 |
|
|---|
| 1009 | if (! -d $system_includes[0])
|
|---|
| 1010 | {
|
|---|
| 1011 | # By default $(datadir)/aclocal doesn't exist. We don't want to
|
|---|
| 1012 | # get an error in the case where we are searching the default
|
|---|
| 1013 | # directory and it hasn't been created. (We know
|
|---|
| 1014 | # @system_includes has its default value if @automake_includes
|
|---|
| 1015 | # is not empty, because --acdir is the only way to change this.)
|
|---|
| 1016 | @system_includes = () if @automake_includes;
|
|---|
| 1017 | }
|
|---|
| 1018 | else
|
|---|
| 1019 | {
|
|---|
| 1020 | # Finally, adds any directory listed in the `dirlist' file.
|
|---|
| 1021 | if (open (DIRLIST, "$system_includes[0]/dirlist"))
|
|---|
| 1022 | {
|
|---|
| 1023 | while (<DIRLIST>)
|
|---|
| 1024 | {
|
|---|
| 1025 | # Ignore '#' lines.
|
|---|
| 1026 | next if /^#/;
|
|---|
| 1027 | # strip off newlines and end-of-line comments
|
|---|
| 1028 | s/\s*\#.*$//;
|
|---|
| 1029 | chomp;
|
|---|
| 1030 | foreach my $dir (glob)
|
|---|
| 1031 | {
|
|---|
| 1032 | push (@system_includes, $dir) if -d $dir;
|
|---|
| 1033 | }
|
|---|
| 1034 | }
|
|---|
| 1035 | close (DIRLIST);
|
|---|
| 1036 | }
|
|---|
| 1037 | }
|
|---|
| 1038 | }
|
|---|
| 1039 |
|
|---|
| 1040 | ################################################################
|
|---|
| 1041 |
|
|---|
| 1042 | parse_WARNINGS; # Parse the WARNINGS environment variable.
|
|---|
| 1043 | parse_arguments;
|
|---|
| 1044 | $configure_ac = require_configure_ac;
|
|---|
| 1045 |
|
|---|
| 1046 | # We may have to rerun aclocal if some file have been installed, but
|
|---|
| 1047 | # it should not happen more than once. The reason we must run again
|
|---|
| 1048 | # is that once the file has been moved from /usr/share/aclocal/ to the
|
|---|
| 1049 | # local m4/ directory it appears at a new place in the search path,
|
|---|
| 1050 | # hence it should be output at a different position in aclocal.m4. If
|
|---|
| 1051 | # we did not rerun aclocal, the next run of aclocal would produce a
|
|---|
| 1052 | # different aclocal.m4.
|
|---|
| 1053 | my $loop = 0;
|
|---|
| 1054 | while (1)
|
|---|
| 1055 | {
|
|---|
| 1056 | ++$loop;
|
|---|
| 1057 | prog_error "Too many loops." if $loop > 2;
|
|---|
| 1058 |
|
|---|
| 1059 | reset_maps;
|
|---|
| 1060 | scan_m4_files;
|
|---|
| 1061 | scan_configure;
|
|---|
| 1062 | last if $exit_code;
|
|---|
| 1063 | my %macro_traced = trace_used_macros;
|
|---|
| 1064 | last if write_aclocal ($output_file, keys %macro_traced);
|
|---|
| 1065 | last if $dry_run;
|
|---|
| 1066 | }
|
|---|
| 1067 | check_acinclude;
|
|---|
| 1068 |
|
|---|
| 1069 | exit $exit_code;
|
|---|
| 1070 |
|
|---|
| 1071 | ### Setup "GNU" style for perl-mode and cperl-mode.
|
|---|
| 1072 | ## Local Variables:
|
|---|
| 1073 | ## perl-indent-level: 2
|
|---|
| 1074 | ## perl-continued-statement-offset: 2
|
|---|
| 1075 | ## perl-continued-brace-offset: 0
|
|---|
| 1076 | ## perl-brace-offset: 0
|
|---|
| 1077 | ## perl-brace-imaginary-offset: 0
|
|---|
| 1078 | ## perl-label-offset: -2
|
|---|
| 1079 | ## cperl-indent-level: 2
|
|---|
| 1080 | ## cperl-brace-offset: 0
|
|---|
| 1081 | ## cperl-continued-brace-offset: 0
|
|---|
| 1082 | ## cperl-label-offset: -2
|
|---|
| 1083 | ## cperl-extra-newline-before-brace: t
|
|---|
| 1084 | ## cperl-merge-trailing-else: nil
|
|---|
| 1085 | ## cperl-continued-statement-offset: 2
|
|---|
| 1086 | ## End:
|
|---|
