# -*- perl -*-
# @configure_input@
-eval 'exec @PERL@ -S $0 ${1+"$@"}'
+eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
if 0;
-# aclocal - scan configure.in and generate aclocal.m4.
+# aclocal - create aclocal.m4 by scanning configure.ac
-# Some constants.
-$VERSION = "@VERSION@";
-$PACKAGE = "@PACKAGE@";
-$prefix = "@prefix@";
-$acdir = "@datadir@/@PACKAGE@";
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+# Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# Written by Tom Tromey <tromey@redhat.com>.
+
+BEGIN
+{
+ my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
+ unshift @INC, (split ':', $perllibdir);
+}
+
+use Automake::Config;
+use Automake::General;
+use Automake::Configure_ac;
+use Automake::XFile;
+use Automake::FileUtils;
+use File::stat;
+
+# Note that this isn't pkgdatadir, but a separate directory.
+# Note also that the versioned directory is handled later.
+$acdir = '@datadir@/aclocal';
+$default_acdir = $acdir;
+# contains a list of directories, one per line, to be added
+# to the dirlist in addition to $acdir, as if -I had been
+# added to the command line. If acdir has been redirected,
+# we will also check the specified acdir (this is done later).
+$default_dirlist = "$default_acdir/dirlist";
# Some globals.
+# configure.ac or configure.in.
+my $configure_ac = require_configure_ac;
+
# Exit status.
$exit_status = 0;
-# Text to output.
-$output = '';
-
# Output file name.
$output_file = 'aclocal.m4';
+# Modification time of the youngest dependency.
+$greatest_mtime = 0;
+
+# Option --force.
+$force_output = 0;
+
# Which macros have been seen.
%macro_seen = ();
# Which files have been seen.
%file_seen = ();
+# Remember the order into which we scanned the files.
+# It's important to output the contents of aclocal.m4 in the opposite order.
+@file_order = ();
+
+# Map macro names to file names.
+%map = ();
+
+# Map file names to file contents.
+%file_contents = ();
+
# How much to say.
-$verbosity = 0;
-
-@obsolete_macros =
- (
- 'AC_FEATURE_CTYPE',
- 'AC_FEATURE_ERRNO',
- 'AC_FEATURE_EXIT',
- 'AC_SYSTEM_HEADER',
- 'fp_C_PROTOTYPES',
- 'fp_FUNC_FNMATCH',
- 'fp_PROG_CC_STDC',
- 'fp_PROG_INSTALL',
- 'fp_WITH_DMALLOC',
- 'fp_WITH_REGEX',
- 'gm_PROG_LIBTOOL',
- 'jm_MAINTAINER_MODE',
- 'md_TYPE_PTRDIFF_T',
- 'ud_PATH_LISPDIR',
-# These aren't quite obsolete.
-# 'md_PATH_PROG',
-# 'ud_GNU_GETTEXT',
-# 'ud_LC_MESSAGES',
-# 'ud_WITH_NLS'
- );
-
-$obsolete_rx = '(' . join ('|', @obsolete_macros) . ')';
+$verbose = 0;
+
+# Matches a macro definition.
+# AC_DEFUN([macroname], ...)
+# or
+# AC_DEFUN(macroname, ...)
+# When macroname is `['-quoted , we accept any character in the name,
+# except `]'. Otherwise macroname stops on the first `]', `,', `)',
+# or `\n' encountered.
+$ac_defun_rx = "A[CU]_DEFUN\\((?:\\[([^]]+)\\]|([^],)\n]+))";
+
+# Matches an AC_REQUIRE line.
+$ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
\f
-&parse_arguments (@ARGV);
+local (@dirlist) = &parse_arguments (@ARGV);
+&scan_m4_files (@dirlist);
&scan_configure;
if (! $exit_status)
-{
- &write_aclocal;
-}
+ {
+ my %macro_traced = &trace_used_macros;
+ &write_aclocal ($output_file, keys %macro_traced);
+ }
+&check_acinclude;
exit $exit_status;
################################################################
# Print usage and exit.
-sub usage
+sub usage ($)
{
local ($status) = @_;
- print "Usage: aclocal [OPTIONS] ...\n";
+ 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\n";
+ --version print version number, then exit
+
+Report bugs to <bug-automake\@gnu.org>.\n";
exit $status;
}
# Parse command line.
-sub parse_arguments
+sub parse_arguments (@)
{
local (@arglist) = @_;
+ local (@dirlist);
+ local ($print_and_exit) = 0;
while (@arglist)
{
{
$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')
{
- ++$verbosity;
+ ++$verbose;
}
elsif ($arglist[0] eq '--version')
{
- print "aclocal - GNU $PACKAGE $VERSION\n";
+ print "aclocal (GNU $PACKAGE) $VERSION\n\n";
+ print "Copyright (C) 2003 Free Software Foundation, Inc.\n";
+ print "This is free software; see the source for copying conditions. There is NO\n";
+ print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n";
+ print "Written by Tom Tromey <tromey\@redhat.com>\n";
exit 0;
}
elsif ($arglist[0] eq '--help')
}
else
{
- &usage (1);
+ 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 $default_acdir;
+
+ # Search the versioned directory near the end, and then the
+ # unversioned directory last. Only do this if the user didn't
+ # override acdir.
+ push (@dirlist, "$acdir-$APIVERSION")
+ if $acdir eq $default_acdir;
+
+ # 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;
}
################################################################
-sub scan_configure
+sub scan_configure ()
{
- # First, construct list of regexps to match the things we actually
- # have.
- opendir (DIR, $acdir)
- || die "aclocal: couldn't open directory \`$acdir': $!\n";
- local ($search, $elt);
- foreach (sort grep (! /^\./, readdir (DIR)))
+ if (! open (CONFIGURE, $configure_ac))
{
- # Only examine .m4 files.
- next unless s/\.m4$//;
+ print STDERR "aclocal: couldn't open `$configure_ac': $!\n";
+ exit 1;
+ }
- # Skip some files when running out of srcdir. Eg "aclocal.m4"
- # must be skipped.
- next unless /^[A-Za-z]+_[A-Z_]+$/;
+ my $mtime = mtime $configure_ac;
+ $greatest_mtime = $mtime if $greatest_mtime < $mtime;
- print STDERR "Finding $_\n" if $verbosity;
- ($elt = $_) =~ s/(\W)/\\$1/g;
- $search .= "&add_file (\"$elt\") if /$elt/;\n";
+ # Make sure we include acinclude.m4 if it exists.
+ if (-f 'acinclude.m4')
+ {
+ &add_file ('acinclude.m4');
}
- closedir (DIR);
- # Construct a new function that does the searching. We use a
- # function (instead of just evalling $search in the loop) so that
- # "die" is correctly and easily propagated if run.
- eval 'sub search { ' . $search . '};';
+ while (<CONFIGURE>)
+ {
+ # Remove comments from current line.
+ s/\bdnl\b.*$//;
+ s/\#.*$//;
+
+ # Search for things we know about. The "search" sub is
+ # constructed dynamically by scan_m4_files. The last
+ # parenthetical match makes sure we don't match things that
+ # look like macro assignments or AC_SUBSTs.
+ if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
+ {
+ # Macro not found, but AM_ prefix found.
+ warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
+ $exit_status = 1;
+ }
+ }
- open (CONFIGURE, "configure.in")
- || die "aclocal: couldn't open \`configure.in': $!\n";
+ close (CONFIGURE);
+}
- while (<CONFIGURE>)
- {
- # Remove comments from current line.
- s/\bdnl\b.*$//;
- s/\#.*$//;
+################################################################
- if (/$obsolete_rx/o)
+# Check macros in acinclude.m4. If one is not used, warn.
+sub check_acinclude ()
+{
+ local ($key);
+
+ foreach $key (keys %map)
+ {
+ next unless $map{$key} eq 'acinclude.m4';
+ if (! $macro_seen{$key})
{
- chop;
- warn "aclocal: configure.in: $.: obsolete macro \`$_'\n";
- $exit_status = 1;
- next;
+ # FIXME: should print line number of acinclude.m4.
+ warn "aclocal: macro `$key' defined in acinclude.m4 but never used\n";
}
-
- # Search for things we know about. The "search" sub is
- # constructed dynamically, above.
- &search;
}
+}
+
+################################################################
- close (CONFIGURE);
+# Scan all the installed m4 files and construct a map.
+sub scan_m4_files (@)
+{
+ local (@dirlist) = @_;
- # Include this file if it exists
+ # First, scan acinclude.m4 if it exists.
if (-f 'acinclude.m4')
{
- &add_file ('acinclude.m4');
+ $file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
+ }
+
+ local ($m4dir);
+ foreach $m4dir (@dirlist)
+ {
+ if (! opendir (DIR, $m4dir))
+ {
+ print STDERR "aclocal: couldn't open directory `$m4dir': $!\n";
+ exit 1;
+ }
+
+ local ($file, $fullfile);
+ # We reverse the directory contents so that foo2.m4 gets
+ # used in preference to foo1.m4.
+ foreach $file (reverse sort grep (! /^\./, readdir (DIR)))
+ {
+ # Only examine .m4 files.
+ next unless $file =~ /\.m4$/;
+
+ # Skip some files when running out of srcdir.
+ next if $file eq 'aclocal.m4';
+
+ $fullfile = $m4dir . '/' . $file;
+ $file_contents{$fullfile} = &scan_file ($fullfile);
+ }
+ closedir (DIR);
+ }
+
+ # Construct a new function that does the searching. We use a
+ # function (instead of just evaluating $search in the loop) so that
+ # "die" is correctly and easily propagated if run.
+ my $search = "sub search {\nmy \$found = 0;\n";
+ foreach my $key (reverse sort keys %map)
+ {
+ $search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
+ . '"); $found = 1; }' . "\n");
}
+ $search .= "return \$found;\n};\n";
+ eval $search;
+ die "internal error: $@\n search is $search" if $@;
}
################################################################
+# Add a macro to the output.
+sub add_macro ($)
+{
+ local ($macro) = @_;
+
+ # We want to ignore AC_ macros. However, if an AC_ macro is
+ # defined in (eg) acinclude.m4, then we want to make sure we mark
+ # it as seen.
+ return if $macro =~ /^AC_/ && ! defined $map{$macro};
+
+ if (! defined $map{$macro})
+ {
+ warn "aclocal: macro `$macro' required but not defined\n";
+ $exit_status = 1;
+ return;
+ }
+
+ print STDERR "aclocal: saw macro $macro\n" if $verbose;
+ $macro_seen{$macro} = 1;
+ &add_file ($map{$macro});
+}
+
# Add a file to output.
-sub add_file
+sub add_file ($)
{
- local ($file) = @_;
- local ($fullfile) = $file;
+ local ($file) = @_;
+
+ # Only add a file once.
+ return if ($file_seen{$file});
+ $file_seen{$file} = 1;
- return if ($file_seen{$file});
- $file_seen{$file} = 1;
+ my $mtime = mtime $file;
+ $greatest_mtime = $mtime if $greatest_mtime < $mtime;
- if (! -f $file)
+ # If the file to add looks like path outside the project,
+ # copy it to the output.
+ # The regex catches filenames starting with things like
+ # / \ c:\ ../ ./../ etc.
+ if ($file =~ m,^(?:(?:\w:)?[\\/]|(?:\.[\\/]+)*\.\.[\\/]),)
+ {
+ $output .= $file_contents{$file} . "\n";
+ }
+ else
{
- $fullfile = $acdir . '/' . $file . '.m4';
- if (! -f $fullfile)
+ # Otherwise, simply include the file.
+ $output .= "m4_include([$file])\n";
+ }
+ my (@rlist);
+ foreach (split ("\n", $file_contents{$file}))
+ {
+ # Remove comments from current line.
+ s/\bdnl\b.*$//;
+ s/\#.*$//;
+
+ if (/$ac_require_rx/g)
+ {
+ 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_])/)
{
- # Maybe the file is an Autoconf built-in. Check the only
- # way we know how. Suggestions on how to make this better
- # are welcome. FIXME should give file and line number of
- # enclosing file.
- return if $file =~ /^AC_[A-Z_]+$/;
- die "aclocal: file \`$file' not found\n";
+ # Macro not found, but AM_ prefix found.
+ warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
+ $exit_status = 1;
}
}
- open (FILE, $fullfile)
- || die "aclocal: couldn't open \`$fullfile': $!\n";
+ local ($macro);
+ foreach $macro (@rlist)
+ {
+ &add_macro ($macro);
+ }
+}
+
+# Point to the documentation for underquoted AC_DEFUN only once.
+my $underquoted_manual_once = 0;
+
+# Scan a single M4 file. Return contents.
+sub scan_file ($)
+{
+ local ($file) = @_;
- local (@rlist);
- while (<FILE>)
+ unshift @file_order, $file;
+
+ my $fh = new Automake::XFile $file;
+ my $contents = '';
+ while ($_ = $fh->getline)
{
- $output .= $_;
+ # Ignore `##' lines.
+ next if /^##/;
- # See if we're defining a macro that was already seen. This
- # is mostly a special case for `acinclude.m4'.
- if (/AC_DEFUN\(\[?([^])]*)\]?/)
- {
- if ($1 ne $file && $file_seen{$1})
- {
- warn "aclocal: $fullfile: $.: duplicated macro \`$1'\n";
- $exit_status = 1;
- }
- $macro_seen{$1} = 1;
- }
+ $contents .= $_;
- # See if some other macro is required.
- if (/AC_REQUIRE\(\[?([^])]*)\]?\)/)
+ if (/$ac_defun_rx/)
{
- push (@rlist, $1) unless defined $macro_seen{$1};
+ if (! defined $1)
+ {
+ print STDERR "$file:$.: underquoted definition of $2\n";
+ print STDERR "$file:$.: run info '(automake)Extending aclocal'\n"
+ . "or see http://sources.redhat.com/automake/"
+ . "automake.html#Extending%20aclocal\n"
+ unless $underquoted_manual_once;
+ $underquoted_manual_once = 1;
+ }
+ if (! defined $map{$1 || $2})
+ {
+ print STDERR "aclocal: found macro $1 in $file: $.\n"
+ if $verbose;
+ $map{$1 || $2} = $file;
+ }
+ 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.
+ print STDERR "aclocal: ignoring macro $1 in $file: $.\n"
+ if $verbose;
+ }
}
}
- $output .= "\n";
- close (FILE);
- foreach $file (@rlist)
+ return $contents;
+}
+
+sub trace_used_macros ($)
+{
+ my ($filename) = @_;
+
+ my %files = map { $map{$_} => 1 } keys %macro_seen;
+
+ my $traces = ($ENV{AUTOM4TE} || 'autom4te');
+ $traces .= " --language Autoconf-without-aclocal-m4 $filename ";
+ # All candidate files.
+ $traces .= join (' ', grep { exists $files{$_} } @file_order) . " ";
+ # All candidate macros.
+ $traces .= join (' ', map { "--trace='$_:\$n'" } (keys %macro_seen));
+
+ print STDERR "aclocal: running $traces $configure_ac\n" if $verbose;
+
+ my $tracefh = new Automake::XFile ("$traces $configure_ac |");
+
+ my %traced = ();
+
+ while ($_ = $tracefh->getline)
{
- &add_file ($file);
+ chomp;
+ $traced{$_} = 1 if $macro_seen{$_};
}
+ return %traced;
}
################################################################
# Write output.
-sub write_aclocal
+sub write_aclocal ($@)
{
- return if ! $output;
+ my ($output_file, @macros) = @_;
+ my $output = '';
- print STDERR "Writing aclocal.m4\n" if $verbosity;
+ my %files = map { $map{$_} => 1 } @macros;
+ $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
- open (ACLOCAL, "> aclocal.m4")
- || die "aclocal: couldn't open \`aclocal.m4' for writing: $!\n";
- print ACLOCAL "dnl aclocal.m4 generated automatically by aclocal $VERSION\n\n";
- print ACLOCAL $output;
- close (ACLOCAL);
+ for $file (grep { exists $files{$_} } @file_order)
+ {
+ my $mtime = mtime $file;
+ $greatest_mtime = $mtime if $greatest_mtime < $mtime;
+
+ # If the file to add looks like path outside the project,
+ # copy it to the output.
+ # The regex catches filenames starting with things like
+ # / \ c:\ ../ ./../ etc.
+ if ($file =~ m,^(?:(?:\w:)?[\\/]|(?:\.[\\/]+)*\.\.[\\/]),)
+ {
+ $output .= $file_contents{$file} . "\n";
+ }
+ else
+ {
+ # Otherwise, simply include the file.
+ $output .= "m4_include([$file])\n";
+ }
+ }
+
+ # 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 $VERSION -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+# Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+$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;
}
+
+### 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:
projects / platform / upstream / automake.git / blobdiff