aclocal.in - automake - Git at Google

 #!@PERL@
 # -*- perl -*-
 # @configure_input@

 # aclocal - create aclocal.m4 by scanning configure.in
 # Copyright (C) 1996 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@cygnus.com>.

 eval 'exec @PERL@ -S $0 ${1+"$@"}'
     if 0;

 # aclocal - scan configure.in and generate aclocal.m4.

 # Some constants.
 $VERSION = "@VERSION@";
 $PACKAGE = "@PACKAGE@";
 $prefix = "@prefix@";
 # Note that this isn't pkgdatadir, but a separate directory.
 $acdir = "@datadir@/aclocal";

 # Some globals.

 # Exit status.
 $exit_status = 0;

 # Text to output.
 $output = '';

 # Output file name.
 $output_file = 'aclocal.m4';

 # Which macros have been seen.
 %macro_seen = ();

 # Which files have been seen.
 %file_seen = ();

 # 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) . ')';

 # Matches a macro definition.
 $ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";

 # Matches an AC_REQUIRE line.
 $ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";


 &parse_arguments (@ARGV);
 &scan_m4_files ($acdir);
 &scan_configure;
 if (! $exit_status)
 {
     &write_aclocal;
 }
 &check_acinclude;

 exit $exit_status;

 ################################################################

 # Print usage and exit.
 sub usage
 {
     local ($status) = @_;

     print "Usage: aclocal [OPTIONS] ...\n";
     print "\
   --acdir=DIR           directory holding config files
   --help                print this help, then exit
   --output=FILE         put output in FILE (default aclocal.m4)
   --verbose             don't be silent
   --version             print version number, then exit

 Report bugs to <bug-gnu-utils\@prep.ai.mit.edu>\n";

     exit $status;
 }

 # Parse command line.
 sub parse_arguments
 {
     local (@arglist) = @_;

     while (@arglist)
     {
 	if ($arglist[0] =~ /^--acdir=(.+)$/)
 	{
 	    $acdir = $1;
 	}
 	elsif ($arglist[0] =~/^--output=(.+)$/)
 	{
 	    $output_file = $1;
 	}
 	elsif ($arglist[0] eq '--verbose')
 	{
 	    ++$verbosity;
 	}
 	elsif ($arglist[0] eq '--version')
 	{
 	    print "aclocal (GNU $PACKAGE) $VERSION\n";
 	    print "Copyright (C) 1996 Free Software Foundation, Inc.\n";
 	    print "aclocal comes with ABSOLUTELY NO WARRANTY.\n";
 	    print "You may redistribute copies of aclocal\n";
 	    print "under the terms of the GNU General Public License.\n";
 	    print "For more information about these matters, see the file named COPYING.\n";
 	    exit 0;
 	}
 	elsif ($arglist[0] eq '--help')
 	{
 	    &usage (0);
 	}
 	else
 	{
 	    die "aclocal: unrecognized option -- \`$arglist[0]'\nTry \`aclocal --help' for more information.\n";
 	}

 	shift (@arglist);
     }
 }

 ################################################################

 sub scan_configure
 {
     open (CONFIGURE, "configure.in")
 	|| die "aclocal: couldn't open \`configure.in': $!\n";

     # Make sure we include acinclude.m4 if it exists.
     if (-f 'acinclude.m4')
     {
 	&add_file ('acinclude.m4');
     }

     while (<CONFIGURE>)
     {
 	# Remove comments from current line.
 	s/\bdnl\b.*$//;
 	s/\#.*$//;

 	if (/$obsolete_rx/o)
 	{
 	    chop;
 	    warn "aclocal: configure.in: $.: obsolete macro \`$_'\n";
 	    $exit_status = 1;
 	    next;
 	}

 	# Search for things we know about.  The "search" sub is
 	# constructed dynamically, above.
 	&search;
     }

     close (CONFIGURE);
 }

 ################################################################

 # 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})
 	{
 	    warn "aclocal: macro \`$key' defined in acinclude.m4 but never used\n";
 	}
     }
 }

 ################################################################

 # Scan all the installed m4 files and construct a map.
 sub scan_m4_files
 {
     local ($m4dir) = @_;

     # First, scan acinclude.m4 if it exists.
     if (-f 'acinclude.m4')
     {
 	$file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
     }

     opendir (DIR, $m4dir)
 	|| die "aclocal: couldn't open directory \`$m4dir': $!\n";
     local ($file, $fullfile, $expr);
     foreach $file (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 evalling $search in the loop) so that
     # "die" is correctly and easily propagated if run.
     local ($search, $expr, $key);
     foreach $key (keys %map)
     {
 	# EXPR is a regexp matching the name of the macro.
 	($expr = $key) =~ s/(\W)/\\$1/g;
 	$search .= "&add_macro ('" . $key . "') if /" . $expr . "/;\n";
     }
     eval 'sub search { ' . $search . '};';
     die "internal error: $@\n search is $search " if $@;
 }

 ################################################################

 # Add a macro to the output.
 sub add_macro
 {
     local ($macro) = @_;

     # Ignore AC_ macros.
     return if $macro =~ /^AC_/;

     if (! defined $map{$macro})
     {
 	warn "aclocal: macro \`$macro' required but not defined\n";
 	$exit_status = 1;
 	return;
     }

     print STDERR "saw macro $macro\n" if $verbosity;
     $macro_seen{$macro} = 1;
     &add_file ($map{$macro});
 }

 # Add a file to output.
 sub add_file
 {
     local ($file) = @_;

     # Only add a file once.
     return if ($file_seen{$file});
     $file_seen{$file} = 1;

     $output .= $file_contents{$file} . "\n";
     local (@rlist);
     foreach (split ("\n", $file_contents{$file}))
     {
 	if (/$ac_require_rx/g)
 	{
 	    push (@rlist, $1);
 	}

 	# This function constructed dynamically.
 	&search;
     }

     local ($macro);
     foreach $macro (@rlist)
     {
 	&add_macro ($macro);
     }
 }

 # Scan a single M4 file.  Return contents.
 sub scan_file
 {
     local ($file) = @_;

     open (FILE, $file)
 	|| die "aclocal: couldn't open \`$file': $!\n";
     local ($contents) = '';
     while (<FILE>)
     {
 	# Ignore `##' lines.
 	next if /^##/;

 	$contents .= $_;

 	if (/$ac_defun_rx/)
 	{
 	    if (defined $map{$1})
 	    {
 		warn "aclocal: $file: $.: duplicated macro \`$1'\n";
 		$exit_status = 1;
 	    }
 	    print STDERR "Found macro $1 in $file\n" if $verbosity;
 	    $map{$1} = $file;
 	}
     }
     close (FILE);

     return $contents;
 }

 ################################################################

 # Write output.
 sub write_aclocal
 {
     return if ! length ($output);

     print STDERR "Writing aclocal.m4\n" if $verbosity;

     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);
 }
	#!@PERL@
	# -- perl --
	# @configure_input@

	# aclocal - create aclocal.m4 by scanning configure.in
	# Copyright (C) 1996 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@cygnus.com>.

	eval 'exec @PERL@ -S $0 ${1+"$@"}'
	if 0;

	# aclocal - scan configure.in and generate aclocal.m4.

	# Some constants.
	$VERSION = "@VERSION@";
	$PACKAGE = "@PACKAGE@";
	$prefix = "@prefix@";
	# Note that this isn't pkgdatadir, but a separate directory.
	$acdir = "@datadir@/aclocal";

	# Some globals.

	# Exit status.
	$exit_status = 0;

	# Text to output.
	$output = '';

	# Output file name.
	$output_file = 'aclocal.m4';

	# Which macros have been seen.
	%macro_seen = ();

	# Which files have been seen.
	%file_seen = ();

	# 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) . ')';

	# Matches a macro definition.
	$ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";

	# Matches an AC_REQUIRE line.
	$ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";



	&parse_arguments (@ARGV);
	&scan_m4_files ($acdir);
	&scan_configure;
	if (! $exit_status)
	{
	&write_aclocal;
	}
	&check_acinclude;

	exit $exit_status;

	################################################################

	# Print usage and exit.
	sub usage
	{
	local ($status) = @_;

	print "Usage: aclocal [OPTIONS] ...\n";
	print "\
	--acdir=DIR directory holding config files
	--help print this help, then exit
	--output=FILE put output in FILE (default aclocal.m4)
	--verbose don't be silent
	--version print version number, then exit

	Report bugs to <bug-gnu-utils\@prep.ai.mit.edu>\n";

	exit $status;
	}

	# Parse command line.
	sub parse_arguments
	{
	local (@arglist) = @_;

	while (@arglist)
	{
	if ($arglist[0] =~ /^--acdir=(.+)$/)
	{
	$acdir = $1;
	}
	elsif ($arglist[0] =~/^--output=(.+)$/)
	{
	$output_file = $1;
	}
	elsif ($arglist[0] eq '--verbose')
	{
	++$verbosity;
	}
	elsif ($arglist[0] eq '--version')
	{
	print "aclocal (GNU $PACKAGE) $VERSION\n";
	print "Copyright (C) 1996 Free Software Foundation, Inc.\n";
	print "aclocal comes with ABSOLUTELY NO WARRANTY.\n";
	print "You may redistribute copies of aclocal\n";
	print "under the terms of the GNU General Public License.\n";
	print "For more information about these matters, see the file named COPYING.\n";
	exit 0;
	}
	elsif ($arglist[0] eq '--help')
	{
	&usage (0);
	}
	else
	{
	die "aclocal: unrecognized option -- \`$arglist[0]'\nTry \`aclocal --help' for more information.\n";
	}

	shift (@arglist);
	}
	}

	################################################################

	sub scan_configure
	{
	open (CONFIGURE, "configure.in")
	\|\| die "aclocal: couldn't open \`configure.in': $!\n";

	# Make sure we include acinclude.m4 if it exists.
	if (-f 'acinclude.m4')
	{
	&add_file ('acinclude.m4');
	}

	while (<CONFIGURE>)
	{
	# Remove comments from current line.
	s/\bdnl\b.*$//;
	s/\#.*$//;

	if (/$obsolete_rx/o)
	{
	chop;
	warn "aclocal: configure.in: $.: obsolete macro \`$_'\n";
	$exit_status = 1;
	next;
	}

	# Search for things we know about. The "search" sub is
	# constructed dynamically, above.
	&search;
	}

	close (CONFIGURE);
	}

	################################################################

	# 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})
	{
	warn "aclocal: macro \`$key' defined in acinclude.m4 but never used\n";
	}
	}
	}

	################################################################

	# Scan all the installed m4 files and construct a map.
	sub scan_m4_files
	{
	local ($m4dir) = @_;

	# First, scan acinclude.m4 if it exists.
	if (-f 'acinclude.m4')
	{
	$file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
	}

	opendir (DIR, $m4dir)
	\|\| die "aclocal: couldn't open directory \`$m4dir': $!\n";
	local ($file, $fullfile, $expr);
	foreach $file (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 evalling $search in the loop) so that
	# "die" is correctly and easily propagated if run.
	local ($search, $expr, $key);
	foreach $key (keys %map)
	{
	# EXPR is a regexp matching the name of the macro.
	($expr = $key) =~ s/(\W)/\\$1/g;
	$search .= "&add_macro ('" . $key . "') if /" . $expr . "/;\n";
	}
	eval 'sub search { ' . $search . '};';
	die "internal error: $@\n search is $search " if $@;
	}

	################################################################

	# Add a macro to the output.
	sub add_macro
	{
	local ($macro) = @_;

	# Ignore AC_ macros.
	return if $macro =~ /^AC_/;

	if (! defined $map{$macro})
	{
	warn "aclocal: macro \`$macro' required but not defined\n";
	$exit_status = 1;
	return;
	}

	print STDERR "saw macro $macro\n" if $verbosity;
	$macro_seen{$macro} = 1;
	&add_file ($map{$macro});
	}

	# Add a file to output.
	sub add_file
	{
	local ($file) = @_;

	# Only add a file once.
	return if ($file_seen{$file});
	$file_seen{$file} = 1;

	$output .= $file_contents{$file} . "\n";
	local (@rlist);
	foreach (split ("\n", $file_contents{$file}))
	{
	if (/$ac_require_rx/g)
	{
	push (@rlist, $1);
	}

	# This function constructed dynamically.
	&search;
	}

	local ($macro);
	foreach $macro (@rlist)
	{
	&add_macro ($macro);
	}
	}

	# Scan a single M4 file. Return contents.
	sub scan_file
	{
	local ($file) = @_;

	open (FILE, $file)
	\|\| die "aclocal: couldn't open \`$file': $!\n";
	local ($contents) = '';
	while (<FILE>)
	{
	# Ignore `##' lines.
	next if /^##/;

	$contents .= $_;

	if (/$ac_defun_rx/)
	{
	if (defined $map{$1})
	{
	warn "aclocal: $file: $.: duplicated macro \`$1'\n";
	$exit_status = 1;
	}
	print STDERR "Found macro $1 in $file\n" if $verbosity;
	$map{$1} = $file;
	}
	}
	close (FILE);

	return $contents;
	}

	################################################################

	# Write output.
	sub write_aclocal
	{
	return if ! length ($output);

	print STDERR "Writing aclocal.m4\n" if $verbosity;

	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);
	}