717 lines
20 KiB
Perl
Executable File
717 lines
20 KiB
Perl
Executable File
#!/usr/bin/perl
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# -*- perl -*-
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# Generated from aclocal.in; do not edit by hand.
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eval 'case $# in 0) exec /usr/bin/perl -S "$0";; *) exec /usr/bin/perl -S "$0" "$@";; esac'
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if 0;
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# aclocal - create aclocal.m4 by scanning configure.ac
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# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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# Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# Written by Tom Tromey <tromey@redhat.com>.
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BEGIN
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{
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my $perllibdir = $ENV{'perllibdir'} || '/usr/local/share/automake19';
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unshift @INC, (split ':', $perllibdir);
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}
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use Automake::Config;
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use Automake::General;
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use Automake::Configure_ac;
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use Automake::Channels;
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use Automake::XFile;
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use Automake::FileUtils;
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use File::Basename;
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use File::stat;
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use Cwd;
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# Note that this isn't pkgdatadir, but a separate directory.
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# Note also that the versioned directory is handled later.
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$acdir = '/usr/local/share/aclocal19';
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$default_acdir = $acdir;
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$acdir_x11 = '/usr/X11R6/share/aclocal';
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# contains a list of directories, one per line, to be added
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# to the dirlist in addition to $acdir, as if -I had been
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# added to the command line. If acdir has been redirected,
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# we will also check the specified acdir (this is done later).
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$default_dirlist = "$default_acdir/dirlist";
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# Some globals.
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# configure.ac or configure.in.
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my $configure_ac;
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# Output file name.
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$output_file = 'aclocal.m4';
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# Modification time of the youngest dependency.
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$greatest_mtime = 0;
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# Option --force.
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$force_output = 0;
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# Which macros have been seen.
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%macro_seen = ();
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# Which files have been seen.
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%file_seen = ();
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# Remember the order into which we scanned the files.
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# It's important to output the contents of aclocal.m4 in the opposite order.
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# (Definitions in first files we have scanned should override those from
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# later files. So they must appear last in the output.)
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@file_order = ();
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# Map macro names to file names.
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%map = ();
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# Ditto, but records the last definition of each macro as returned by --trace.
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%map_traced_defs = ();
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# Map file names to file contents.
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%file_contents = ();
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# Map file names to included files (transitively closed).
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%file_includes = ();
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# How much to say.
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$verbose = 0;
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# Matches a macro definition.
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# AC_DEFUN([macroname], ...)
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# or
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# AC_DEFUN(macroname, ...)
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# When macroname is `['-quoted , we accept any character in the name,
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# except `]'. Otherwise macroname stops on the first `]', `,', `)',
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# or `\n' encountered.
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$ac_defun_rx =
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"(?:AU_ALIAS|A[CU]_DEFUN|AC_DEFUN_ONCE)\\((?:\\[([^]]+)\\]|([^],)\n]+))";
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# Matches an AC_REQUIRE line.
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$ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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# Matches an m4_include line
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$m4_include_rx = "(?:m4_)?s?include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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################################################################
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# Check macros in acinclude.m4. If one is not used, warn.
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sub check_acinclude ()
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{
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foreach my $key (keys %map)
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{
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# FIXME: should print line number of acinclude.m4.
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warn ("aclocal: warning: macro `$key' defined in "
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. "acinclude.m4 but never used\n")
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if $map{$key} eq 'acinclude.m4' && ! $macro_seen{$key};
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}
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}
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################################################################
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# Scan all the installed m4 files and construct a map.
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sub scan_m4_files (@)
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{
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local (@dirlist) = @_;
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# First, scan configure.ac. It may contain macro definitions,
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# or may include other files that define macros.
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&scan_file ($configure_ac, 'aclocal');
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# Then, scan acinclude.m4 if it exists.
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if (-f 'acinclude.m4')
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{
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&scan_file ('acinclude.m4', 'aclocal');
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}
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# Finally, scan all files in our search path.
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local ($m4dir);
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foreach $m4dir (@dirlist)
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{
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if (! opendir (DIR, $m4dir))
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{
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print STDERR "aclocal: couldn't open directory `$m4dir': $!\n";
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exit 1;
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}
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local ($file, $fullfile);
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# We reverse the directory contents so that foo2.m4 gets
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# used in preference to foo1.m4.
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foreach $file (reverse sort grep (! /^\./, readdir (DIR)))
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{
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# Only examine .m4 files.
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next unless $file =~ /\.m4$/;
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# Skip some files when running out of srcdir.
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next if $file eq 'aclocal.m4';
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$fullfile = File::Spec->canonpath ("$m4dir/$file");
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&scan_file ($fullfile, 'aclocal');
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}
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closedir (DIR);
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}
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# Construct a new function that does the searching. We use a
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# function (instead of just evaluating $search in the loop) so that
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# "die" is correctly and easily propagated if run.
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my $search = "sub search {\nmy \$found = 0;\n";
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foreach my $key (reverse sort keys %map)
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{
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$search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
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. '"); $found = 1; }' . "\n");
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}
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$search .= "return \$found;\n};\n";
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eval $search;
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die "internal error: $@\n search is $search" if $@;
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}
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################################################################
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# Add a macro to the output.
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sub add_macro ($)
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{
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local ($macro) = @_;
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# Ignore unknown required macros. Either they are not really
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# needed (e.g., a conditional AC_REQUIRE), in which case aclocal
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# should be quiet, or they are needed and Autoconf itself will
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# complain when we trace for macro usage later.
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return unless defined $map{$macro};
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print STDERR "aclocal: saw macro $macro\n" if $verbose;
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$macro_seen{$macro} = 1;
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&add_file ($map{$macro});
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}
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# rel2abs ($file, $directory)
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# ---------------------------
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# Similar to File::Spec->rel2abs ($file, $directory), but
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# work with Perl 5.005. (File::Spec->rel2abs is available
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# only in Perl 5.6.)
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# Remove this once we require 5.6.
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sub rel2abs ($$)
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{
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my ($file, $dir) = @_;
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if (! File::Spec->file_name_is_absolute ($file))
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{
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$dir = cwd () . "/$dir"
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unless File::Spec->file_name_is_absolute ($dir);
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$file = "$dir/$file";
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}
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$file = File::Spec->canonpath ($file);
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return $file;
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}
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# scan_configure_dep ($file)
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# --------------------------
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# Scan a configure dependency (configure.ac, or separate m4 files)
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# for uses of know macros and AC_REQUIREs of possibly unknown macros.
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# Recursively scan m4_included files.
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my %scanned_configure_dep = ();
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sub scan_configure_dep ($)
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{
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my ($file) = @_;
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# Do not scan a file twice.
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return ()
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if exists $scanned_configure_dep{$file};
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$scanned_configure_dep{$file} = 1;
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my $mtime = mtime $file;
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$greatest_mtime = $mtime if $greatest_mtime < $mtime;
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my $contents = exists $file_contents{$file} ?
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$file_contents{$file} : contents $file;
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my $line = 0;
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my @rlist = ();
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my @ilist = ();
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foreach (split ("\n", $contents))
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{
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++$line;
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# Remove comments from current line.
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s/\bdnl\b.*$//;
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s/\#.*$//;
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while (/$m4_include_rx/go)
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{
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push (@ilist, $1 || $2);
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}
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while (/$ac_require_rx/go)
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{
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push (@rlist, $1 || $2);
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}
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# The search function is constructed dynamically by
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# scan_m4_files. The last parenthetical match makes sure we
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# don't match things that look like macro assignments or
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# AC_SUBSTs.
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if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
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{
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# Macro not found, but AM_ prefix found.
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# Make this just a warning, because we do not know whether
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# the macro is actually used (it could be called conditionally).
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warn ("aclocal:$file:$line: warning: "
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. "macro `$2' not found in library\n");
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}
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}
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add_macro ($_) foreach (@rlist);
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my $dirname = dirname $file;
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&scan_configure_dep (rel2abs ($_, $dirname)) foreach (@ilist);
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}
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# Add a file to output.
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sub add_file ($)
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{
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local ($file) = @_;
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# Only add a file once.
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return if ($file_seen{$file});
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$file_seen{$file} = 1;
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scan_configure_dep $file;
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}
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# Point to the documentation for underquoted AC_DEFUN only once.
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my $underquoted_manual_once = 0;
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# scan_file ($FILE, $WHERE)
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# -------------------------
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# Scan a single M4 file ($FILE), and all files it includes.
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# Return the list of included files.
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# $WHERE is the location to use in the diagnostic if the file
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# does not exist.
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sub scan_file ($$)
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{
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my ($file, $where) = @_;
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my $base = dirname $file;
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# Do not scan the same file twice.
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return @$file_includes{$file} if exists $file_includes{$file};
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# Prevent potential infinite recursion (if two files include each other).
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return () if exists $file_contents{$file};
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unshift @file_order, $file;
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if (! -e $file)
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{
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print STDERR "$where: file `$file' does not exist\n";
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exit 1;
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}
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my $fh = new Automake::XFile $file;
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my $contents = '';
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my @inc_files = ();
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my %inc_lines = ();
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while ($_ = $fh->getline)
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{
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# Ignore `##' lines.
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next if /^##/;
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$contents .= $_;
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while (/$ac_defun_rx/go)
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{
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if (! defined $1)
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{
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print STDERR "$file:$.: warning: underquoted definition of $2\n";
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print STDERR " run info '(automake)Extending aclocal'\n"
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. " or see http://sources.redhat.com/automake/"
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. "automake.html#Extending-aclocal\n"
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unless $underquoted_manual_once;
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$underquoted_manual_once = 1;
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}
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my $macro = $1 || $2;
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if (! defined $map{$macro})
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{
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print STDERR "aclocal: found macro $macro in $file: $.\n"
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if $verbose;
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$map{$macro} = $file;
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}
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else
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{
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# Note: we used to give an error here if we saw a
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# duplicated macro. However, this turns out to be
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# extremely unpopular. It causes actual problems which
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# are hard to work around, especially when you must
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# mix-and-match tool versions.
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print STDERR "aclocal: ignoring macro $macro in $file: $.\n"
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if $verbose;
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}
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}
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while (/$m4_include_rx/go)
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{
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my $ifile = $1 || $2;
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# m4_include is relative to the directory of the file which
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# perform the include, but we want paths relative to the
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# directory where aclocal is run. Do not use
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# File::Spec->rel2abs, because we want to store relative
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# paths (they might be used later of aclocal outputs an
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# m4_include for this file, or if the user itself includes
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# this file).
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$ifile = "$base/$ifile"
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unless $base eq '.' || File::Spec->file_name_is_absolute ($ifile);
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push (@inc_files, $ifile);
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$inc_lines{$ifile} = $.;
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}
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}
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$file_contents{$file} = $contents;
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# For some reason I don't understand, it does not work
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# to do `map { scan_file ($_, ...) } @inc_files' below.
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# With Perl 5.8.2 it undefines @inc_files.
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my @copy = @inc_files;
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my @all_inc_files = (@inc_files,
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map { scan_file ($_, "$file:$inc_lines{$_}") } @copy);
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$file_includes{$file} = \@all_inc_files;
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return @all_inc_files;
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}
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# strip_redundant_includes (%FILES)
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# ---------------------------------
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# Each key in %FILES is a file that must be present in the output.
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# However some of these files might already include other files in %FILES,
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# so there is no point in including them another time.
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# This removes items of %FILES which are already included by another file.
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sub strip_redundant_includes (%)
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{
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my %files = @_;
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# Files at the end of @file_order should override those at the beginning,
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# so it is important to preserve these trailing files. We can remove
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# a file A if it is going to be output before a file B that includes
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# file A, not the converse.
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foreach my $file (reverse @file_order)
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{
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next unless exists $files{$file};
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foreach my $ifile (@{$file_includes{$file}})
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{
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next unless exists $files{$ifile};
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delete $files{$ifile};
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print STDERR "$ifile is already included by $file\n"
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if $verbose;
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}
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}
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return %files;
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}
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sub trace_used_macros ()
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{
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my %files = map { $map{$_} => 1 } keys %macro_seen;
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$files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
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%files = strip_redundant_includes %files;
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# configure.ac is implicitly included.
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delete $files{$configure_ac};
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my $traces = ($ENV{AUTOM4TE} || 'autom4te259');
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$traces .= " --language Autoconf-without-aclocal-m4 ";
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# All candidate files.
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$traces .= join (' ', grep { exists $files{$_} } @file_order) . " ";
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# All candidate macros.
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$traces .= join (' ', map { "--trace='$_:\$f:\$n:\$1'" } ('AC_DEFUN',
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'AC_DEFUN_ONCE',
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'AU_DEFUN',
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keys %macro_seen));
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print STDERR "aclocal: running $traces $configure_ac\n" if $verbose;
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my $tracefh = new Automake::XFile ("$traces $configure_ac |");
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my %traced = ();
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while ($_ = $tracefh->getline)
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{
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chomp;
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my ($file, $macro, $arg1) = split (/:/);
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$traced{$macro} = 1 if $macro_seen{$macro};
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$map_traced_defs{$arg1} = $file
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if ($macro eq 'AC_DEFUN'
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|| $macro eq 'AC_DEFUN_ONCE'
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|| $macro eq 'AU_DEFUN');
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}
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$tracefh->close;
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return %traced;
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}
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sub scan_configure ()
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{
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# Make sure we include acinclude.m4 if it exists.
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if (-f 'acinclude.m4')
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{
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add_file ('acinclude.m4');
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}
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scan_configure_dep ($configure_ac);
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}
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################################################################
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# Write output.
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sub write_aclocal ($@)
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{
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my ($output_file, @macros) = @_;
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my $output = '';
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my %files = ();
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# Get the list of files containing definitions for the macros used.
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# (Filter out unused macro definitions with $map_traced_defs. This
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# can happen when an Autoconf macro is conditionally defined:
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# aclocal sees the potential definition, but this definition is
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# actually never processed and the Autoconf implementation is used
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# instead.)
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for my $m (@macros)
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{
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$files{$map{$m}} = 1 if $map{$m} eq $map_traced_defs{$m};
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}
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$files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
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%files = strip_redundant_includes %files;
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delete $files{$configure_ac};
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for $file (grep { exists $files{$_} } @file_order)
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{
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# Check the time stamp of this file, and all files it includes.
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for my $ifile ($file, @{$file_includes{$file}})
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{
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my $mtime = mtime $ifile;
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$greatest_mtime = $mtime if $greatest_mtime < $mtime;
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}
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# If the file to add looks like outside the project, copy it
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# to the output. The regex catches filenames starting with
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# things like `/', `\', or `c:\'.
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if ($file =~ m,^(?:\w:)?[\\/],)
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{
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$output .= $file_contents{$file} . "\n";
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}
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else
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{
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# Otherwise, simply include the file.
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$output .= "m4_include([$file])\n";
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}
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}
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|
||
# Nothing to output?!
|
||
# FIXME: Shouldn't we diagnose this?
|
||
return if ! length ($output);
|
||
|
||
# We used to print `# $output_file generated automatically etc.' But
|
||
# this creates spurious differences when using autoreconf. Autoreconf
|
||
# creates aclocal.m4t and then rename it to aclocal.m4, but the
|
||
# rebuild rules generated by Automake create aclocal.m4 directly --
|
||
# this would gives two ways to get the same file, with a different
|
||
# name in the header.
|
||
$output = "# generated automatically by aclocal $VERSION -*- Autoconf -*-
|
||
|
||
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
|
||
# 2005 Free Software Foundation, Inc.
|
||
# This file is free software; the Free Software Foundation
|
||
# gives unlimited permission to copy and/or distribute it,
|
||
# with or without modifications, as long as this notice is preserved.
|
||
|
||
# This program is distributed in the hope that it will be useful,
|
||
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
|
||
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
|
||
# PARTICULAR PURPOSE.
|
||
|
||
$output";
|
||
|
||
# We try not to update $output_file unless necessary, because
|
||
# doing so invalidate Autom4te's cache and therefore slows down
|
||
# tools called after aclocal.
|
||
#
|
||
# We need to overwrite $output_file in the following situations.
|
||
# * The --force option is in use.
|
||
# * One of the dependencies is younger.
|
||
# (Not updating $output_file in this situation would cause
|
||
# make to call aclocal in loop.)
|
||
# * The contents of the current file are different from what
|
||
# we have computed.
|
||
if (!$force_output
|
||
&& $greatest_mtime < mtime ($output_file)
|
||
&& $output eq contents ($output_file))
|
||
{
|
||
print STDERR "aclocal: $output_file unchanged\n" if $verbose;
|
||
return;
|
||
}
|
||
|
||
print STDERR "aclocal: writing $output_file\n" if $verbose;
|
||
|
||
my $out = new Automake::XFile "> $output_file";
|
||
print $out $output;
|
||
return;
|
||
}
|
||
|
||
################################################################
|
||
|
||
# Print usage and exit.
|
||
sub usage ($)
|
||
{
|
||
local ($status) = @_;
|
||
|
||
print "Usage: aclocal [OPTIONS] ...\n\n";
|
||
print "\
|
||
Generate `aclocal.m4' by scanning `configure.ac' or `configure.in'
|
||
|
||
--acdir=DIR directory holding config files
|
||
--help print this help, then exit
|
||
-I DIR add directory to search list for .m4 files
|
||
--force always update output file
|
||
--output=FILE put output in FILE (default aclocal.m4)
|
||
--print-ac-dir print name of directory holding m4 files
|
||
--verbose don't be silent
|
||
--version print version number, then exit
|
||
|
||
Report bugs to <bug-automake\@gnu.org>.\n";
|
||
|
||
exit $status;
|
||
}
|
||
|
||
# Parse command line.
|
||
sub parse_arguments (@)
|
||
{
|
||
local (@arglist) = @_;
|
||
local (@dirlist);
|
||
local ($print_and_exit) = 0;
|
||
|
||
while (@arglist)
|
||
{
|
||
if ($arglist[0] =~ /^--acdir=(.+)$/)
|
||
{
|
||
$acdir = $1;
|
||
}
|
||
elsif ($arglist[0] =~/^--output=(.+)$/)
|
||
{
|
||
$output_file = $1;
|
||
}
|
||
elsif ($arglist[0] eq '-I')
|
||
{
|
||
shift (@arglist);
|
||
push (@dirlist, $arglist[0]);
|
||
}
|
||
elsif ($arglist[0] eq '--print-ac-dir')
|
||
{
|
||
$print_and_exit = 1;
|
||
}
|
||
elsif ($arglist[0] eq '--force')
|
||
{
|
||
$force_output = 1;
|
||
}
|
||
elsif ($arglist[0] eq '--verbose')
|
||
{
|
||
++$verbose;
|
||
}
|
||
elsif ($arglist[0] eq '--version')
|
||
{
|
||
print "aclocal (GNU $PACKAGE) $VERSION\n";
|
||
print "Written by Tom Tromey <tromey\@redhat.com>\n\n";
|
||
print "Copyright (C) 2005 Free Software Foundation, Inc.\n";
|
||
print "This is free software; see the source for copying conditions. There is NO\n";
|
||
print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
|
||
exit 0;
|
||
}
|
||
elsif ($arglist[0] eq '--help')
|
||
{
|
||
&usage (0);
|
||
}
|
||
else
|
||
{
|
||
print STDERR "aclocal: unrecognized option -- `$arglist[0]'\nTry `aclocal --help' for more information.\n";
|
||
exit 1;
|
||
}
|
||
|
||
shift (@arglist);
|
||
}
|
||
|
||
if ($print_and_exit)
|
||
{
|
||
print $acdir, "\n";
|
||
exit 0;
|
||
}
|
||
|
||
$default_dirlist="$acdir/dirlist"
|
||
if $acdir ne $default_acdir;
|
||
|
||
unshift @dirlist, $acdir_x11 if -d "$acdir_x11/.";
|
||
|
||
# By default $(datadir)/aclocal doesn't exist. We don't want to
|
||
# get an error in the case where we are searching the default
|
||
# directory and it hasn't been created.
|
||
push (@dirlist, $acdir)
|
||
unless $acdir eq $default_acdir && ! -d $acdir;
|
||
|
||
# Finally, adds any directory listed in the `dirlist' file.
|
||
if (open (DEFAULT_DIRLIST, $default_dirlist))
|
||
{
|
||
while (<DEFAULT_DIRLIST>)
|
||
{
|
||
# Ignore '#' lines.
|
||
next if /^#/;
|
||
# strip off newlines and end-of-line comments
|
||
s/\s*\#.*$//;
|
||
chomp ($contents=$_);
|
||
if (-d $contents )
|
||
{
|
||
push (@dirlist, $contents);
|
||
}
|
||
}
|
||
close (DEFAULT_DIRLIST);
|
||
}
|
||
|
||
return @dirlist;
|
||
}
|
||
|
||
################################################################
|
||
|
||
local (@dirlist) = parse_arguments (@ARGV);
|
||
$configure_ac = require_configure_ac;
|
||
scan_m4_files (@dirlist);
|
||
scan_configure;
|
||
if (! $exit_code)
|
||
{
|
||
my %macro_traced = trace_used_macros;
|
||
write_aclocal ($output_file, keys %macro_traced);
|
||
}
|
||
check_acinclude;
|
||
|
||
exit $exit_code;
|
||
|
||
### Setup "GNU" style for perl-mode and cperl-mode.
|
||
## Local Variables:
|
||
## perl-indent-level: 2
|
||
## perl-continued-statement-offset: 2
|
||
## perl-continued-brace-offset: 0
|
||
## perl-brace-offset: 0
|
||
## perl-brace-imaginary-offset: 0
|
||
## perl-label-offset: -2
|
||
## cperl-indent-level: 2
|
||
## cperl-brace-offset: 0
|
||
## cperl-continued-brace-offset: 0
|
||
## cperl-label-offset: -2
|
||
## cperl-extra-newline-before-brace: t
|
||
## cperl-merge-trailing-else: nil
|
||
## cperl-continued-statement-offset: 2
|
||
## End:
|