1093 lines
30 KiB
Perl
Executable File
1093 lines
30 KiB
Perl
Executable File
#!/usr/bin/perl -w
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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,
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# 2005, 2006, 2007, 2008, 2009 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, see <http://www.gnu.org/licenses/>.
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# Written by Tom Tromey <tromey@redhat.com>, and
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# Alexandre Duret-Lutz <adl@gnu.org>.
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BEGIN
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{
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my $perllibdir = $ENV{'perllibdir'} || '/usr/local/share/automake-1.11';
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unshift @INC, (split ':', $perllibdir);
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}
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use strict;
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use Automake::Config;
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use Automake::General;
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use Automake::Configure_ac;
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use Automake::Channels;
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use Automake::ChannelDefs;
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use Automake::XFile;
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use Automake::FileUtils;
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use File::Basename;
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use File::stat;
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use Cwd;
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# Some globals.
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# We do not operate in threaded mode.
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$perl_threads = 0;
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# Include paths for searching macros. We search macros in this order:
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# user-supplied directories first, then the directory containing the
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# automake macros, and finally the system-wide directories for
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# third-party macro. @user_includes can be augmented with -I.
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# @system_includes can be augmented with the `dirlist' file. Also
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# --acdir will reset both @automake_includes and @system_includes.
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my @user_includes = ();
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my @automake_includes = ("/usr/local/share/aclocal-$APIVERSION");
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my @system_includes = ('/usr/local/share/aclocal');
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# Whether we should copy M4 file in $user_includes[0].
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my $install = 0;
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# --diff
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my @diff_command;
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# --dry-run
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my $dry_run = 0;
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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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my $output_file = 'aclocal.m4';
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# Option --force.
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my $force_output = 0;
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# Modification time of the youngest dependency.
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my $greatest_mtime = 0;
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# Which macros have been seen.
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my %macro_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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my @file_order = ();
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# Map macro names to file names.
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my %map = ();
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# Ditto, but records the last definition of each macro as returned by --trace.
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my %map_traced_defs = ();
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# Map basenames to macro names.
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my %invmap = ();
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# Map file names to file contents.
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my %file_contents = ();
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# Map file names to file types.
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my %file_type = ();
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use constant FT_USER => 1;
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use constant FT_AUTOMAKE => 2;
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use constant FT_SYSTEM => 3;
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# Map file names to included files (transitively closed).
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my %file_includes = ();
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# Files which have already been added.
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my %file_added = ();
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# Files that have already been scanned.
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my %scanned_configure_dep = ();
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# Serial numbers, for files that have one.
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# The key is the basename of the file,
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# the value is the serial number represented as a list.
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my %serial = ();
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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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my $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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my $ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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# Matches an m4_include line.
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my $m4_include_rx = "(m4_|m4_s|s)include\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
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# Match a serial number.
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my $serial_line_rx = '^#\s*serial\s+(\S*)';
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my $serial_number_rx = '^\d+(?:\.\d+)*$';
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# Autoconf version
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# Set by trace_used_macros.
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my $ac_version;
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# If set, names a temporary file that must be erased on abnormal exit.
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my $erase_me;
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################################################################
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# Erase temporary file ERASE_ME. Handle signals.
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sub unlink_tmp
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{
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my ($sig) = @_;
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if ($sig)
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{
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verb "caught SIG$sig, bailing out";
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}
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if (defined $erase_me && -e $erase_me && !unlink ($erase_me))
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{
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fatal "could not remove `$erase_me': $!";
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}
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undef $erase_me;
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# reraise default handler.
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if ($sig)
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{
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$SIG{$sig} = 'DEFAULT';
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kill $sig => $$;
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}
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}
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$SIG{'INT'} = $SIG{'TERM'} = $SIG{'QUIT'} = $SIG{'HUP'} = 'unlink_tmp';
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END { unlink_tmp }
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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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msg ('syntax', "warning: macro `$key' defined in "
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. "acinclude.m4 but never used")
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if $map{$key} eq 'acinclude.m4' && ! exists $macro_seen{$key};
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}
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}
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sub reset_maps ()
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{
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$greatest_mtime = 0;
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%macro_seen = ();
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@file_order = ();
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%map = ();
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%map_traced_defs = ();
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%file_contents = ();
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%file_type = ();
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%file_includes = ();
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%file_added = ();
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%scanned_configure_dep = ();
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%invmap = ();
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%serial = ();
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undef &search;
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}
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# install_file ($SRC, $DEST)
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sub install_file ($$)
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{
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my ($src, $dest) = @_;
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my $diff_dest;
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if ($force_output
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|| !exists $file_contents{$dest}
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|| $file_contents{$src} ne $file_contents{$dest})
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{
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if (-e $dest)
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{
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msg 'note', "overwriting `$dest' with `$src'";
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$diff_dest = $dest;
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}
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else
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{
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msg 'note', "installing `$dest' from `$src'";
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}
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if (@diff_command)
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{
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if (! defined $diff_dest)
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{
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# $dest does not exist. We create an empty one just to
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# run diff, and we erase it afterward. Using the real
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# the destination file (rather than a temporary file) is
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# good when diff is run with options that display the
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# file name.
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#
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# If creating $dest fails, fall back to /dev/null. At
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# least one diff implementation (Tru64's) cannot deal
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# with /dev/null. However working around this is not
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# worth the trouble since nobody run aclocal on a
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# read-only tree anyway.
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$erase_me = $dest;
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my $f = new IO::File "> $dest";
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if (! defined $f)
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{
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undef $erase_me;
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$diff_dest = '/dev/null';
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}
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else
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{
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$diff_dest = $dest;
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$f->close;
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}
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}
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my @cmd = (@diff_command, $diff_dest, $src);
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$! = 0;
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verb "running: @cmd";
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my $res = system (@cmd);
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Automake::FileUtils::handle_exec_errors "@cmd", 1
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if $res;
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unlink_tmp;
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}
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elsif (!$dry_run)
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{
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xsystem ('cp', $src, $dest);
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}
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}
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}
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# Compare two lists of numbers.
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sub list_compare (\@\@)
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{
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my @l = @{$_[0]};
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my @r = @{$_[1]};
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while (1)
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{
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if (0 == @l)
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{
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return (0 == @r) ? 0 : -1;
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}
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elsif (0 == @r)
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{
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return 1;
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}
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elsif ($l[0] < $r[0])
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{
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return -1;
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}
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elsif ($l[0] > $r[0])
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{
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return 1;
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}
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shift @l;
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shift @r;
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}
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}
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################################################################
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# scan_m4_dirs($TYPE, @DIRS)
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# --------------------------
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# Scan all M4 files installed in @DIRS for new macro definitions.
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# Register each file as of type $TYPE (one of the FT_* constants).
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sub scan_m4_dirs ($@)
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{
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my ($type, @dirlist) = @_;
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foreach my $m4dir (@dirlist)
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{
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if (! opendir (DIR, $m4dir))
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{
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fatal "couldn't open directory `$m4dir': $!";
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}
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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 my $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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my $fullfile = File::Spec->canonpath ("$m4dir/$file");
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&scan_file ($type, $fullfile, 'aclocal');
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}
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closedir (DIR);
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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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# 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 (FT_USER, $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 (FT_USER, 'acinclude.m4', 'aclocal');
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}
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# Finally, scan all files in our search paths.
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scan_m4_dirs (FT_USER, @user_includes);
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scan_m4_dirs (FT_AUTOMAKE, @automake_includes);
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scan_m4_dirs (FT_SYSTEM, @system_includes);
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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 $search;
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prog_error "$@\n search is $search" if $@;
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}
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################################################################
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||
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# Add a macro to the output.
|
||
sub add_macro ($)
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||
{
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||
my ($macro) = @_;
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||
|
||
# Ignore unknown required macros. Either they are not really
|
||
# 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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||
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verb "saw macro $macro";
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$macro_seen{$macro} = 1;
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&add_file ($map{$macro});
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}
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||
|
||
# scan_configure_dep ($file)
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# --------------------------
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# Scan a configure dependency (configure.ac, or separate m4 files)
|
||
# for uses of known macros and AC_REQUIREs of possibly unknown macros.
|
||
# Recursively scan m4_included files.
|
||
sub scan_configure_dep ($)
|
||
{
|
||
my ($file) = @_;
|
||
# Do not scan a file twice.
|
||
return ()
|
||
if exists $scanned_configure_dep{$file};
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||
$scanned_configure_dep{$file} = 1;
|
||
|
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my $mtime = mtime $file;
|
||
$greatest_mtime = $mtime if $greatest_mtime < $mtime;
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||
|
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my $contents = exists $file_contents{$file} ?
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$file_contents{$file} : contents $file;
|
||
|
||
my $line = 0;
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||
my @rlist = ();
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||
my @ilist = ();
|
||
foreach (split ("\n", $contents))
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||
{
|
||
++$line;
|
||
# Remove comments from current line.
|
||
s/\bdnl\b.*$//;
|
||
s/\#.*$//;
|
||
# Avoid running all the following regexes on white lines.
|
||
next if /^\s*$/;
|
||
|
||
while (/$m4_include_rx/go)
|
||
{
|
||
my $ifile = $2 || $3;
|
||
# Skip missing `sinclude'd files.
|
||
next if $1 ne 'm4_' && ! -f $ifile;
|
||
push @ilist, $ifile;
|
||
}
|
||
|
||
while (/$ac_require_rx/go)
|
||
{
|
||
push (@rlist, $1 || $2);
|
||
}
|
||
|
||
# The search function is constructed dynamically by
|
||
# scan_m4_files. The last parenthetical match makes sure we
|
||
# don't match things that look like macro assignments or
|
||
# AC_SUBSTs.
|
||
if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
|
||
{
|
||
# Macro not found, but AM_ prefix found.
|
||
# Make this just a warning, because we do not know whether
|
||
# the macro is actually used (it could be called conditionally).
|
||
msg ('unsupported', "$file:$line",
|
||
"warning: macro `$2' not found in library");
|
||
}
|
||
}
|
||
|
||
add_macro ($_) foreach (@rlist);
|
||
&scan_configure_dep ($_) foreach @ilist;
|
||
}
|
||
|
||
# add_file ($FILE)
|
||
# ----------------
|
||
# Add $FILE to output.
|
||
sub add_file ($)
|
||
{
|
||
my ($file) = @_;
|
||
|
||
# Only add a file once.
|
||
return if ($file_added{$file});
|
||
$file_added{$file} = 1;
|
||
|
||
scan_configure_dep $file;
|
||
}
|
||
|
||
# Point to the documentation for underquoted AC_DEFUN only once.
|
||
my $underquoted_manual_once = 0;
|
||
|
||
# scan_file ($TYPE, $FILE, $WHERE)
|
||
# --------------------------------
|
||
# Scan a single M4 file ($FILE), and all files it includes.
|
||
# Return the list of included files.
|
||
# $TYPE is one of FT_USER, FT_AUTOMAKE, or FT_SYSTEM, depending
|
||
# on where the file comes from.
|
||
# $WHERE is the location to use in the diagnostic if the file
|
||
# does not exist.
|
||
sub scan_file ($$$)
|
||
{
|
||
my ($type, $file, $where) = @_;
|
||
my $basename = basename $file;
|
||
|
||
# Do not scan the same file twice.
|
||
return @{$file_includes{$file}} if exists $file_includes{$file};
|
||
# Prevent potential infinite recursion (if two files include each other).
|
||
return () if exists $file_contents{$file};
|
||
|
||
unshift @file_order, $file;
|
||
|
||
$file_type{$file} = $type;
|
||
|
||
fatal "$where: file `$file' does not exist" if ! -e $file;
|
||
|
||
my $fh = new Automake::XFile $file;
|
||
my $contents = '';
|
||
my @inc_files = ();
|
||
my %inc_lines = ();
|
||
|
||
my $defun_seen = 0;
|
||
my $serial_seen = 0;
|
||
my $serial_older = 0;
|
||
|
||
while ($_ = $fh->getline)
|
||
{
|
||
# Ignore `##' lines.
|
||
next if /^##/;
|
||
|
||
$contents .= $_;
|
||
my $line = $_;
|
||
|
||
if ($line =~ /$serial_line_rx/go)
|
||
{
|
||
my $number = $1;
|
||
if ($number !~ /$serial_number_rx/go)
|
||
{
|
||
msg ('syntax', "$file:$.",
|
||
"warning: ill-formed serial number `$number', "
|
||
. "expecting a version string with only digits and dots");
|
||
}
|
||
elsif ($defun_seen)
|
||
{
|
||
# aclocal removes all definitions from M4 file with the
|
||
# same basename if a greater serial number is found.
|
||
# Encountering a serial after some macros will undefine
|
||
# these macros...
|
||
msg ('syntax', "$file:$.",
|
||
'the serial number must appear before any macro definition');
|
||
}
|
||
# We really care about serials only for non-automake macros
|
||
# and when --install is used. But the above diagnostics are
|
||
# made regardless of this, because not using --install is
|
||
# not a reason not the fix macro files.
|
||
elsif ($install && $type != FT_AUTOMAKE)
|
||
{
|
||
$serial_seen = 1;
|
||
my @new = split (/\./, $number);
|
||
|
||
verb "$file:$.: serial $number";
|
||
|
||
if (!exists $serial{$basename}
|
||
|| list_compare (@new, @{$serial{$basename}}) > 0)
|
||
{
|
||
# Delete any definition we knew from the old macro.
|
||
foreach my $def (@{$invmap{$basename}})
|
||
{
|
||
verb "$file:$.: ignoring previous definition of $def";
|
||
delete $map{$def};
|
||
}
|
||
$invmap{$basename} = [];
|
||
$serial{$basename} = \@new;
|
||
}
|
||
else
|
||
{
|
||
$serial_older = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
# Remove comments from current line.
|
||
# Do not do it earlier, because the serial line is a comment.
|
||
$line =~ s/\bdnl\b.*$//;
|
||
$line =~ s/\#.*$//;
|
||
|
||
while ($line =~ /$ac_defun_rx/go)
|
||
{
|
||
$defun_seen = 1;
|
||
if (! defined $1)
|
||
{
|
||
msg ('syntax', "$file:$.", "warning: underquoted definition of $2"
|
||
. "\n run info '(automake)Extending aclocal'\n"
|
||
. " or see http://sources.redhat.com/automake/"
|
||
. "automake.html#Extending-aclocal")
|
||
unless $underquoted_manual_once;
|
||
$underquoted_manual_once = 1;
|
||
}
|
||
|
||
# If this macro does not have a serial and we have already
|
||
# seen a macro with the same basename earlier, we should
|
||
# ignore the macro (don't exit immediately so we can still
|
||
# diagnose later #serial numbers and underquoted macros).
|
||
$serial_older ||= ($type != FT_AUTOMAKE
|
||
&& !$serial_seen && exists $serial{$basename});
|
||
|
||
my $macro = $1 || $2;
|
||
if (!$serial_older && !defined $map{$macro})
|
||
{
|
||
verb "found macro $macro in $file: $.";
|
||
$map{$macro} = $file;
|
||
push @{$invmap{$basename}}, $macro;
|
||
}
|
||
else
|
||
{
|
||
# Note: we used to give an error here if we saw a
|
||
# duplicated macro. However, this turns out to be
|
||
# extremely unpopular. It causes actual problems which
|
||
# are hard to work around, especially when you must
|
||
# mix-and-match tool versions.
|
||
verb "ignoring macro $macro in $file: $.";
|
||
}
|
||
}
|
||
|
||
while ($line =~ /$m4_include_rx/go)
|
||
{
|
||
my $ifile = $2 || $3;
|
||
# Skip missing `sinclude'd files.
|
||
next if $1 ne 'm4_' && ! -f $ifile;
|
||
push (@inc_files, $ifile);
|
||
$inc_lines{$ifile} = $.;
|
||
}
|
||
}
|
||
|
||
# Ignore any file that has an old serial (or no serial if we know
|
||
# another one with a serial).
|
||
return ()
|
||
if ($serial_older ||
|
||
($type != FT_AUTOMAKE && !$serial_seen && exists $serial{$basename}));
|
||
|
||
$file_contents{$file} = $contents;
|
||
|
||
# For some reason I don't understand, it does not work
|
||
# to do `map { scan_file ($_, ...) } @inc_files' below.
|
||
# With Perl 5.8.2 it undefines @inc_files.
|
||
my @copy = @inc_files;
|
||
my @all_inc_files = (@inc_files,
|
||
map { scan_file ($type, $_,
|
||
"$file:$inc_lines{$_}") } @copy);
|
||
$file_includes{$file} = \@all_inc_files;
|
||
return @all_inc_files;
|
||
}
|
||
|
||
# strip_redundant_includes (%FILES)
|
||
# ---------------------------------
|
||
# Each key in %FILES is a file that must be present in the output.
|
||
# However some of these files might already include other files in %FILES,
|
||
# so there is no point in including them another time.
|
||
# This removes items of %FILES which are already included by another file.
|
||
sub strip_redundant_includes (%)
|
||
{
|
||
my %files = @_;
|
||
|
||
# Always include acinclude.m4, even if it does not appear to be used.
|
||
$files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
|
||
# File included by $configure_ac are redundant.
|
||
$files{$configure_ac} = 1;
|
||
|
||
# Files at the end of @file_order should override those at the beginning,
|
||
# so it is important to preserve these trailing files. We can remove
|
||
# a file A if it is going to be output before a file B that includes
|
||
# file A, not the converse.
|
||
foreach my $file (reverse @file_order)
|
||
{
|
||
next unless exists $files{$file};
|
||
foreach my $ifile (@{$file_includes{$file}})
|
||
{
|
||
next unless exists $files{$ifile};
|
||
delete $files{$ifile};
|
||
verb "$ifile is already included by $file";
|
||
}
|
||
}
|
||
|
||
# configure.ac is implicitly included.
|
||
delete $files{$configure_ac};
|
||
|
||
return %files;
|
||
}
|
||
|
||
sub trace_used_macros ()
|
||
{
|
||
my %files = map { $map{$_} => 1 } keys %macro_seen;
|
||
%files = strip_redundant_includes %files;
|
||
|
||
my $traces = ($ENV{AUTOM4TE} || 'autom4te');
|
||
$traces .= " --language Autoconf-without-aclocal-m4 ";
|
||
# All candidate files.
|
||
$traces .= join (' ',
|
||
(map { "'$_'" }
|
||
(grep { exists $files{$_} } @file_order))) . " ";
|
||
# All candidate macros.
|
||
$traces .= join (' ',
|
||
(map { "--trace='$_:\$f::\$n::\$1'" }
|
||
('AC_DEFUN',
|
||
'AC_DEFUN_ONCE',
|
||
'AU_DEFUN',
|
||
'_AM_AUTOCONF_VERSION')),
|
||
# Do not trace $1 for all other macros as we do
|
||
# not need it and it might contains harmful
|
||
# characters (like newlines).
|
||
(map { "--trace='$_:\$f::\$n'" } (keys %macro_seen)));
|
||
|
||
verb "running $traces $configure_ac";
|
||
|
||
my $tracefh = new Automake::XFile ("$traces $configure_ac |");
|
||
|
||
my %traced = ();
|
||
|
||
while ($_ = $tracefh->getline)
|
||
{
|
||
chomp;
|
||
my ($file, $macro, $arg1) = split (/::/);
|
||
|
||
$traced{$macro} = 1 if exists $macro_seen{$macro};
|
||
|
||
$map_traced_defs{$arg1} = $file
|
||
if ($macro eq 'AC_DEFUN'
|
||
|| $macro eq 'AC_DEFUN_ONCE'
|
||
|| $macro eq 'AU_DEFUN');
|
||
|
||
$ac_version = $arg1 if $macro eq '_AM_AUTOCONF_VERSION';
|
||
}
|
||
|
||
$tracefh->close;
|
||
|
||
return %traced;
|
||
}
|
||
|
||
sub scan_configure ()
|
||
{
|
||
# Make sure we include acinclude.m4 if it exists.
|
||
if (-f 'acinclude.m4')
|
||
{
|
||
add_file ('acinclude.m4');
|
||
}
|
||
scan_configure_dep ($configure_ac);
|
||
}
|
||
|
||
################################################################
|
||
|
||
# Write output.
|
||
# Return 0 iff some files were installed locally.
|
||
sub write_aclocal ($@)
|
||
{
|
||
my ($output_file, @macros) = @_;
|
||
my $output = '';
|
||
|
||
my %files = ();
|
||
# Get the list of files containing definitions for the macros used.
|
||
# (Filter out unused macro definitions with $map_traced_defs. This
|
||
# can happen when an Autoconf macro is conditionally defined:
|
||
# aclocal sees the potential definition, but this definition is
|
||
# actually never processed and the Autoconf implementation is used
|
||
# instead.)
|
||
for my $m (@macros)
|
||
{
|
||
$files{$map{$m}} = 1
|
||
if (exists $map_traced_defs{$m}
|
||
&& $map{$m} eq $map_traced_defs{$m});
|
||
}
|
||
# Do not explicitly include a file that is already indirectly included.
|
||
%files = strip_redundant_includes %files;
|
||
|
||
my $installed = 0;
|
||
|
||
for my $file (grep { exists $files{$_} } @file_order)
|
||
{
|
||
# Check the time stamp of this file, and of all files it includes.
|
||
for my $ifile ($file, @{$file_includes{$file}})
|
||
{
|
||
my $mtime = mtime $ifile;
|
||
$greatest_mtime = $mtime if $greatest_mtime < $mtime;
|
||
}
|
||
|
||
# If the file to add looks like outside the project, copy it
|
||
# to the output. The regex catches filenames starting with
|
||
# things like `/', `\', or `c:\'.
|
||
if ($file_type{$file} != FT_USER
|
||
|| $file =~ m,^(?:\w:)?[\\/],)
|
||
{
|
||
if (!$install || $file_type{$file} != FT_SYSTEM)
|
||
{
|
||
# Copy the file into aclocal.m4.
|
||
$output .= $file_contents{$file} . "\n";
|
||
}
|
||
else
|
||
{
|
||
# Install the file (and any file it includes).
|
||
my $dest;
|
||
for my $ifile (@{$file_includes{$file}}, $file)
|
||
{
|
||
$dest = "$user_includes[0]/" . basename $ifile;
|
||
verb "installing $ifile to $dest";
|
||
install_file ($ifile, $dest);
|
||
}
|
||
$installed = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
# Otherwise, simply include the file.
|
||
$output .= "m4_include([$file])\n";
|
||
}
|
||
}
|
||
|
||
if ($installed)
|
||
{
|
||
verb "running aclocal anew, because some files were installed locally";
|
||
return 0;
|
||
}
|
||
|
||
# Nothing to output?!
|
||
# FIXME: Shouldn't we diagnose this?
|
||
return 1 if ! length ($output);
|
||
|
||
if ($ac_version)
|
||
{
|
||
# Do not use "$output_file" here for the same reason we do not
|
||
# use it in the header below. autom4te will output the name of
|
||
# the file in the diagnostic anyway.
|
||
$output = "m4_ifndef([AC_AUTOCONF_VERSION],
|
||
[m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
|
||
m4_if(m4_defn([AC_AUTOCONF_VERSION]), [$ac_version],,
|
||
[m4_warning([this file was generated for autoconf $ac_version.
|
||
You have another version of autoconf. It may work, but is not guaranteed to.
|
||
If you have problems, you may need to regenerate the build system entirely.
|
||
To do so, use the procedure documented by the package, typically `autoreconf'.])])
|
||
|
||
$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, 2006, 2007, 2008, 2009 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))
|
||
{
|
||
verb "$output_file unchanged";
|
||
return 1;
|
||
}
|
||
|
||
verb "writing $output_file";
|
||
|
||
if (!$dry_run)
|
||
{
|
||
if (-e $output_file && !unlink $output_file)
|
||
{
|
||
fatal "could not remove `$output_file': $!";
|
||
}
|
||
my $out = new Automake::XFile "> $output_file";
|
||
print $out $output;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
################################################################
|
||
|
||
# Print usage and exit.
|
||
sub usage ($)
|
||
{
|
||
my ($status) = @_;
|
||
|
||
print "Usage: aclocal [OPTIONS] ...
|
||
|
||
Generate `aclocal.m4' by scanning `configure.ac' or `configure.in'
|
||
|
||
Options:
|
||
--acdir=DIR directory holding config files (for debugging)
|
||
--diff[=COMMAND] run COMMAND [diff -u] on M4 files that would be
|
||
changed (implies --install and --dry-run)
|
||
--dry-run pretend to, but do not actually update any file
|
||
--force always update output file
|
||
--help print this help, then exit
|
||
-I DIR add directory to search list for .m4 files
|
||
--install copy third-party files to the first -I directory
|
||
--output=FILE put output in FILE (default aclocal.m4)
|
||
--print-ac-dir print name of directory holding m4 files, then exit
|
||
--verbose don't be silent
|
||
--version print version number, then exit
|
||
-W, --warnings=CATEGORY report the warnings falling in CATEGORY
|
||
|
||
Warning categories include:
|
||
`syntax' dubious syntactic constructs (default)
|
||
`unsupported' unknown macros (default)
|
||
`all' all the warnings (default)
|
||
`no-CATEGORY' turn off warnings in CATEGORY
|
||
`none' turn off all the warnings
|
||
`error' treat warnings as errors
|
||
|
||
Report bugs to <bug-automake\@gnu.org>.\n";
|
||
|
||
exit $status;
|
||
}
|
||
|
||
# Print version and exit.
|
||
sub version()
|
||
{
|
||
print <<EOF;
|
||
aclocal (GNU $PACKAGE) $VERSION
|
||
Copyright (C) 2009 Free Software Foundation, Inc.
|
||
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>
|
||
This is free software: you are free to change and redistribute it.
|
||
There is NO WARRANTY, to the extent permitted by law.
|
||
|
||
Written by Tom Tromey <tromey\@redhat.com>
|
||
and Alexandre Duret-Lutz <adl\@gnu.org>.
|
||
EOF
|
||
exit 0;
|
||
}
|
||
|
||
# Parse command line.
|
||
sub parse_arguments ()
|
||
{
|
||
my $print_and_exit = 0;
|
||
my $diff_command;
|
||
|
||
my %cli_options =
|
||
(
|
||
'acdir=s' => sub # Setting --acdir overrides both the
|
||
{ # automake (versioned) directory and the
|
||
# public (unversioned) system directory.
|
||
@automake_includes = ();
|
||
@system_includes = ($_[1])
|
||
},
|
||
'diff:s' => \$diff_command,
|
||
'dry-run' => \$dry_run,
|
||
'force' => \$force_output,
|
||
'I=s' => \@user_includes,
|
||
'install' => \$install,
|
||
'output=s' => \$output_file,
|
||
'print-ac-dir' => \$print_and_exit,
|
||
'verbose' => sub { setup_channel 'verb', silent => 0; },
|
||
'W|warnings=s' => \&parse_warnings,
|
||
);
|
||
use Getopt::Long;
|
||
Getopt::Long::config ("bundling", "pass_through");
|
||
|
||
# See if --version or --help is used. We want to process these before
|
||
# anything else because the GNU Coding Standards require us to
|
||
# `exit 0' after processing these options, and we can't guarantee this
|
||
# if we treat other options first. (Handling other options first
|
||
# could produce error diagnostics, and in this condition it is
|
||
# confusing if aclocal does `exit 0'.)
|
||
my %cli_options_1st_pass =
|
||
(
|
||
'version' => \&version,
|
||
'help' => sub { usage(0); },
|
||
# Recognize all other options (and their arguments) but do nothing.
|
||
map { $_ => sub {} } (keys %cli_options)
|
||
);
|
||
my @ARGV_backup = @ARGV;
|
||
Getopt::Long::GetOptions %cli_options_1st_pass
|
||
or exit 1;
|
||
@ARGV = @ARGV_backup;
|
||
|
||
# Now *really* process the options. This time we know that --help
|
||
# and --version are not present, but we specify them nonetheless so
|
||
# that ambiguous abbreviation are diagnosed.
|
||
Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
|
||
or exit 1;
|
||
|
||
if (@ARGV)
|
||
{
|
||
my %argopts;
|
||
for my $k (keys %cli_options)
|
||
{
|
||
if ($k =~ /(.*)=s$/)
|
||
{
|
||
map { $argopts{(length ($_) == 1)
|
||
? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
|
||
}
|
||
}
|
||
if (exists $argopts{$ARGV[0]})
|
||
{
|
||
fatal ("option `$ARGV[0]' requires an argument\n"
|
||
. "Try `$0 --help' for more information.");
|
||
}
|
||
else
|
||
{
|
||
fatal ("unrecognized option `$ARGV[0]'\n"
|
||
. "Try `$0 --help' for more information.");
|
||
}
|
||
}
|
||
|
||
if ($print_and_exit)
|
||
{
|
||
print "@system_includes\n";
|
||
exit 0;
|
||
}
|
||
|
||
if (defined $diff_command)
|
||
{
|
||
$diff_command = 'diff -u' if $diff_command eq '';
|
||
@diff_command = split (' ', $diff_command);
|
||
$install = 1;
|
||
$dry_run = 1;
|
||
}
|
||
|
||
if ($install && !@user_includes)
|
||
{
|
||
fatal ("--install should copy macros in the directory indicated by the"
|
||
. "\nfirst -I option, but no -I was supplied.");
|
||
}
|
||
|
||
if (! -d $system_includes[0])
|
||
{
|
||
# By default $(datadir)/aclocal doesn't exist. We don't want to
|
||
# get an error in the case where we are searching the default
|
||
# directory and it hasn't been created. (We know
|
||
# @system_includes has its default value if @automake_includes
|
||
# is not empty, because --acdir is the only way to change this.)
|
||
@system_includes = () if @automake_includes;
|
||
}
|
||
else
|
||
{
|
||
# Finally, adds any directory listed in the `dirlist' file.
|
||
if (open (DIRLIST, "$system_includes[0]/dirlist"))
|
||
{
|
||
while (<DIRLIST>)
|
||
{
|
||
# Ignore '#' lines.
|
||
next if /^#/;
|
||
# strip off newlines and end-of-line comments
|
||
s/\s*\#.*$//;
|
||
chomp;
|
||
foreach my $dir (glob)
|
||
{
|
||
push (@system_includes, $dir) if -d $dir;
|
||
}
|
||
}
|
||
close (DIRLIST);
|
||
}
|
||
}
|
||
}
|
||
|
||
################################################################
|
||
|
||
parse_WARNINGS; # Parse the WARNINGS environment variable.
|
||
parse_arguments;
|
||
$configure_ac = require_configure_ac;
|
||
|
||
# We may have to rerun aclocal if some file have been installed, but
|
||
# it should not happen more than once. The reason we must run again
|
||
# is that once the file has been moved from /usr/share/aclocal/ to the
|
||
# local m4/ directory it appears at a new place in the search path,
|
||
# hence it should be output at a different position in aclocal.m4. If
|
||
# we did not rerun aclocal, the next run of aclocal would produce a
|
||
# different aclocal.m4.
|
||
my $loop = 0;
|
||
while (1)
|
||
{
|
||
++$loop;
|
||
prog_error "Too many loops." if $loop > 2;
|
||
|
||
reset_maps;
|
||
scan_m4_files;
|
||
scan_configure;
|
||
last if $exit_code;
|
||
my %macro_traced = trace_used_macros;
|
||
last if write_aclocal ($output_file, keys %macro_traced);
|
||
last if $dry_run;
|
||
}
|
||
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:
|