# -*- 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 - create aclocal.m4 by scanning configure.ac
-# Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+# 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
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
-# Written by Tom Tromey <tromey@cygnus.com>.
+# Written by Tom Tromey <tromey@redhat.com>.
BEGIN
{
- my $prefix = "@prefix@";
- my $perllibdir = $ENV{'perllibdir'} || "@datadir@/@PACKAGE@-@VERSION@";
- unshift @INC, "$perllibdir";
+ my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
+ unshift @INC, (split ':', $perllibdir);
}
+use Automake::Config;
use Automake::General;
+use Automake::Configure_ac;
use Automake::XFile;
+use Automake::FileUtils;
+use File::stat;
-# Some constants.
-$VERSION = "@VERSION@";
-$PACKAGE = "@PACKAGE@";
-$prefix = "@prefix@";
# Note that this isn't pkgdatadir, but a separate directory.
# Note also that the versioned directory is handled later.
-$acdir = "@datadir@/aclocal";
+$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.
$exit_status = 0;
-# Name of the top autoconf input: `configure.ac' or `configure.in'.
-$configure_ac = find_configure_ac;
-
-# 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 = ();
# How much to say.
$verbose = 0;
-# Map from obsolete macros to hints for new macros.
-# If you change this, change the corresponding list in automake.in.
-# FIXME: should just put this into a single file.
-my %obsolete_macros =
- (
- 'AC_FEATURE_CTYPE' => "use `AC_HEADER_STDC'",
- 'AC_FEATURE_ERRNO' => "add `strerror' to `AC_REPLACE_FUNCS(...)'",
- 'AC_FEATURE_EXIT' => '',
- 'AC_SYSTEM_HEADER' => '',
-
- # Note that we do not handle this one, because it is still run
- # from AM_CONFIG_HEADER. So we deal with it specially in
- # &scan_autoconf_files.
- # 'AC_CONFIG_HEADER' => "use `AM_CONFIG_HEADER'",
-
- 'fp_C_PROTOTYPES' => "use `AM_C_PROTOTYPES'",
- 'fp_PROG_CC_STDC' => "use `AM_PROG_CC_STDC'",
- 'fp_PROG_INSTALL' => "use `AC_PROG_INSTALL'",
- 'fp_WITH_DMALLOC' => "use `AM_WITH_DMALLOC'",
- 'fp_WITH_REGEX' => "use `AM_WITH_REGEX'",
- 'gm_PROG_LIBTOOL' => "use `AM_PROG_LIBTOOL'",
- 'jm_MAINTAINER_MODE' => "use `AM_MAINTAINER_MODE'",
- 'md_TYPE_PTRDIFF_T' => "add `ptrdiff_t' to `AC_CHECK_TYPES(...)'",
- 'ud_PATH_LISPDIR' => "use `AM_PATH_LISPDIR'",
- 'ud_GNU_GETTEXT' => "use `AM_GNU_GETTEXT'",
-
- # Now part of autoconf proper, under a different name.
- 'fp_FUNC_FNMATCH' => "use `AC_FUNC_FNMATCH'",
- 'AM_SANITY_CHECK_CC' => "automatically done by `AC_PROG_CC'",
- 'AM_PROG_INSTALL' => "use `AC_PROG_INSTALL'",
- 'AM_EXEEXT' => "automatically done by `AC_PROG_(CC|CXX|F77)'",
- 'AM_CYGWIN32' => "use `AC_CYGWIN'",
- 'AM_MINGW32' => "use `AC_MINGW32'",
- 'AM_FUNC_MKTIME' => "use `AC_FUNC_MKTIME'",
- );
-
-# Regexp to match the above macros.
-$obsolete_rx = '\b(' . join ('|', keys %obsolete_macros) . ')\b';
-
# Matches a macro definition.
-$ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";
+# AC_DEFUN([macroname], ...)
+# or
+# AC_DEFUN(macroname, ...)
+# When macroname is `['-quoted , we accept any character in the name,
+# except `]'. Otherwise macroname stops on the first `]', `,', `)',
+# or `\n' encountered.
+$ac_defun_rx = "A[CU]_DEFUN\\((?:\\[([^]]+)\\]|([^],)\n]+))";
# Matches an AC_REQUIRE line.
-$ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";
+$ac_require_rx = "AC_REQUIRE\\((?:\\[([^]]+)\\]|([^],)\n]+))\\)";
\f
&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) = @_;
--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
}
# Parse command line.
-sub parse_arguments
+sub parse_arguments (@)
{
local (@arglist) = @_;
local (@dirlist);
{
$print_and_exit = 1;
}
+ elsif ($arglist[0] eq '--force')
+ {
+ $force_output = 1;
+ }
elsif ($arglist[0] eq '--verbose')
{
++$verbose;
elsif ($arglist[0] eq '--version')
{
print "aclocal (GNU $PACKAGE) $VERSION\n\n";
- print "Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.\n";
+ print "Copyright (C) 2003 Free Software Foundation, Inc.\n";
print "This is free software; see the source for copying conditions. There is NO\n";
print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n";
- print "Written by Tom Tromey <tromey\@cygnus.com>\n";
+ print "Written by Tom Tromey <tromey\@redhat.com>\n";
exit 0;
}
elsif ($arglist[0] eq '--help')
}
else
{
- die "aclocal: unrecognized option -- `$arglist[0]'\nTry `aclocal --help' for more information.\n";
+ print STDERR "aclocal: unrecognized option -- `$arglist[0]'\nTry `aclocal --help' for more information.\n";
+ exit 1;
}
shift (@arglist);
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-$VERSION")
+ push (@dirlist, "$acdir-$APIVERSION")
if $acdir eq $default_acdir;
# By default $(datadir)/aclocal doesn't exist. We don't want to
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, $contents);
+ }
+ }
+ close (DEFAULT_DIRLIST);
+ }
+
return @dirlist;
}
################################################################
-sub scan_configure
+sub scan_configure ()
{
- die "aclocal: `configure.ac' or `configure.in' is required\n"
- if !$configure_ac;
+ if (! open (CONFIGURE, $configure_ac))
+ {
+ print STDERR "aclocal: couldn't open `$configure_ac': $!\n";
+ exit 1;
+ }
- open (CONFIGURE, $configure_ac)
- || die "aclocal: couldn't open `$configure_ac': $!\n";
+ my $mtime = mtime $configure_ac;
+ $greatest_mtime = $mtime if $greatest_mtime < $mtime;
- # Make sure we include acinclude.m4 if it exists.
- if (-f 'acinclude.m4')
+ # Make sure we include acinclude.m4 if it exists.
+ if (-f 'acinclude.m4')
{
- &add_file ('acinclude.m4');
+ &add_file ('acinclude.m4');
}
- while (<CONFIGURE>)
+ while (<CONFIGURE>)
{
- # Remove comments from current line.
- s/\bdnl\b.*$//;
- s/\#.*$//;
-
- if (/$obsolete_rx/o)
+ # 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_])/)
{
- local ($hint) = '';
- if ($obsolete_macros{$1} ne '')
- {
- $hint = '; ' . $obsolete_macros{$1};
- }
- warn "aclocal: $configure_ac: $.: `$1' is obsolete$hint\n";
- $exit_status = 1;
- next;
- }
-
- # Search for things we know about. The "search" sub is
- # constructed dynamically by scan_m4_files. The last
- # parenthethical match makes sure we don't match things that
- # look like macro assignments or AC_SUBSTs.
- if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
- {
- # Macro not found, but AM_ prefix found.
- warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
- $exit_status = 1;
+ # Macro not found, but AM_ prefix found.
+ warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
+ $exit_status = 1;
}
}
- close (CONFIGURE);
+ close (CONFIGURE);
}
################################################################
# Check macros in acinclude.m4. If one is not used, warn.
-sub check_acinclude
+sub check_acinclude ()
{
local ($key);
################################################################
# Scan all the installed m4 files and construct a map.
-sub scan_m4_files
+sub scan_m4_files (@)
{
local (@dirlist) = @_;
local ($m4dir);
foreach $m4dir (@dirlist)
{
- opendir (DIR, $m4dir)
- || die "aclocal: couldn't open directory `$m4dir': $!\n";
+ if (! opendir (DIR, $m4dir))
+ {
+ print STDERR "aclocal: couldn't open directory `$m4dir': $!\n";
+ exit 1;
+ }
+
local ($file, $fullfile);
- foreach $file (sort grep (! /^\./, readdir (DIR)))
+ # 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 $file =~ /\.m4$/;
}
# Construct a new function that does the searching. We use a
- # function (instead of just evalling $search in the loop) so that
+ # 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)
{
- # EXPR is a regexp matching the name of the macro.
- (my $expr = $key) =~ s/(\W)/\\$1/g;
- $search .= ('if (/\b' . $key . '\b/) { & add_macro (' . $key
- . '); $found = 1; }' . "\n");
+ $search .= ('if (/\b\Q' . $key . '\E(?!\w)/) { & add_macro ("' . $key
+ . '"); $found = 1; }' . "\n");
}
$search .= "return \$found;\n};\n";
eval $search;
################################################################
# Add a macro to the output.
-sub add_macro
+sub add_macro ($)
{
local ($macro) = @_;
}
# Add a file to output.
-sub add_file
+sub add_file ($)
{
- local ($file) = @_;
+ local ($file) = @_;
+
+ # Only add a file once.
+ return if ($file_seen{$file});
+ $file_seen{$file} = 1;
- # Only add a file once.
- return if ($file_seen{$file});
- $file_seen{$file} = 1;
+ my $mtime = mtime $file;
+ $greatest_mtime = $mtime if $greatest_mtime < $mtime;
- $output .= $file_contents{$file} . "\n";
- local ($a, @rlist);
- foreach (split ("\n", $file_contents{$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
+ {
+ # Otherwise, simply include the file.
+ $output .= "m4_include([$file])\n";
+ }
+ my (@rlist);
+ foreach (split ("\n", $file_contents{$file}))
{
- # This is a hack for Perl 4.
- $a = $_;
- if ($a =~ /$ac_require_rx/g)
+ # Remove comments from current line.
+ s/\bdnl\b.*$//;
+ s/\#.*$//;
+
+ if (/$ac_require_rx/g)
{
- push (@rlist, $1);
+ push (@rlist, $1 || $2);
}
- # Remove comments from current line.
- s/\bdnl\b.*$//;
- s/\#.*$//;
-
- # The search function is constructed dynamically by
- # scan_m4_files. The last parenthethical match makes sure we
- # don't match things that look like macro assignments or
- # AC_SUBSTs.
- if (! &search && /(^|\s+)(AM_[A-Z0-9_]+)($|[^\]\)=A-Z0-9_])/)
+ # 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.
- warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
- $exit_status = 1;
+ # Macro not found, but AM_ prefix found.
+ warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
+ $exit_status = 1;
}
}
- local ($macro);
- foreach $macro (@rlist)
+ local ($macro);
+ foreach $macro (@rlist)
{
- &add_macro ($macro);
+ &add_macro ($macro);
}
}
+# Point to the documentation for underquoted AC_DEFUN only once.
+my $underquoted_manual_once = 0;
+
# Scan a single M4 file. Return contents.
-sub scan_file
+sub scan_file ($)
{
- local ($file) = @_;
+ local ($file) = @_;
- my $fh = new Automake::XFile $file;
- my $contents = '';
- while ($_ = $fh->getline)
+ unshift @file_order, $file;
+
+ my $fh = new Automake::XFile $file;
+ my $contents = '';
+ while ($_ = $fh->getline)
{
- # Ignore `##' lines.
- next if /^##/;
+ # Ignore `##' lines.
+ next if /^##/;
- $contents .= $_;
+ $contents .= $_;
- if (/$ac_defun_rx/)
+ if (/$ac_defun_rx/)
{
- if (! defined $map{$1})
+ if (! defined $1)
{
- $map{$1} = $file;
+ print STDERR "$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;
}
-
- # 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: found macro $1 in $file: $.\n" if $verbose;
}
}
- return $contents;
+ 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)
+ {
+ chomp;
+ $traced{$_} = 1 if $macro_seen{$_};
+ }
+ return %traced;
}
################################################################
# Write output.
-sub write_aclocal
+sub write_aclocal ($@)
{
- return if ! length ($output);
+ my ($output_file, @macros) = @_;
+ my $output = '';
- print STDERR "aclocal: writing $output_file\n" if $verbose;
+ my %files = map { $map{$_} => 1 } @macros;
+ $files{'acinclude.m4'} = 1 if -f 'acinclude.m4';
- my $out = new Automake::XFile "> $output_file";
- print $out
-"# $output_file generated automatically by aclocal $VERSION -*- Autoconf -*-
+ 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";
+ }
+ }
-# Copyright 1996, 1997, 1998, 1999, 2000, 2001
+ # 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,
# 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