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aclocal-1.5
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2005-10-16
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#!/usr/bin/perl
# -*- perl -*-
# Generated automatically from aclocal.in by configure.
# aclocal - create aclocal.m4 by scanning configure.ac
# Copyright 1996, 1997, 1998, 1999, 2000, 2001 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 /usr/bin/perl -S $0 ${1+"$@"}'
if 0;
# aclocal - scan configure.ac and generate aclocal.m4.
# Some constants.
$VERSION = "1.5";
$PACKAGE = "automake";
$prefix = "/usr";
# Note that this isn't pkgdatadir, but a separate directory.
$acdir = "/usr/share/aclocal-1.5";
# Some globals.
# Exit status.
$exit_status = 0;
# Name of the top autoconf input: `configure.ac' or `configure.in'.
$configure_ac = '';
# 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.
$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' => "use `AM_TYPE_PTRDIFF_T'",
'ud_PATH_LISPDIR' => "use `AM_PATH_LISPDIR'",
'ud_GNU_GETTEXT' => "use `AM_GNU_GETTEXT'",
# Now part of autoconf proper, under a different name.
'AM_FUNC_FNMATCH' => "use `AC_FUNC_FNMATCH'",
'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' => "use `AC_EXEEXT'",
'AM_CYGWIN32' => "use `AC_CYGWIN'",
'AM_MINGW32' => "use `AC_MINGW32'",
'AM_FUNC_MKTIME' => "use `AC_FUNC_MKTIME'",
# These aren't quite obsolete.
# 'md_PATH_PROG',
);
# Regexp to match the above macros.
$obsolete_rx = '\b(' . join ('|', keys %obsolete_macros) . ')\b';
# Matches a macro definition.
$ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";
# Matches an AC_REQUIRE line.
$ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";
local (@dirlist) = &parse_arguments (@ARGV);
push (@dirlist, "/usr/share/aclocal") if (!grep(/^--acdir/, @ARGV));
&scan_m4_files (@dirlist);
&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\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
--output=FILE put output in FILE (default aclocal.m4)
--print-ac-dir print name of directory holding m4 files
--verbose don't be silent
--version print version number, then exit
Report bugs to <bug-automake\@gnu.org>.\n";
exit $status;
}
# Parse command line.
sub parse_arguments
{
local (@arglist) = @_;
local (@dirlist);
local ($print_and_exit) = 0;
while (@arglist)
{
if ($arglist[0] =~ /^--acdir=(.+)$/)
{
$acdir = $1;
}
elsif ($arglist[0] =~/^--output=(.+)$/)
{
$output_file = $1;
}
elsif ($arglist[0] eq '-I')
{
shift (@arglist);
push (@dirlist, $arglist[0]);
}
elsif ($arglist[0] eq '--print-ac-dir')
{
$print_and_exit = 1;
}
elsif ($arglist[0] eq '--verbose')
{
++$verbose;
}
elsif ($arglist[0] eq '--version')
{
print "aclocal (GNU $PACKAGE) $VERSION\n\n";
print "Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.\n";
print "This is free software; see the source for copying conditions. There is NO\n";
print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n";
print "Written by Tom Tromey <tromey\@cygnus.com>\n";
exit 0;
}
elsif ($arglist[0] eq '--help')
{
&usage (0);
}
else
{
die "aclocal: unrecognized option -- `$arglist[0]'\nTry `aclocal --help' for more information.\n";
}
shift (@arglist);
}
if ($print_and_exit)
{
print "/usr/share/aclocal", "\n";
exit 0;
}
# Search our install directory last.
push (@dirlist, $acdir);
return @dirlist;
}
################################################################
sub scan_configure
{
warn "aclocal: both `configure.ac' and `configure.in' present:"
. " ignoring `configure.in'\n"
if -f 'configure.ac' && -f 'configure.in';
$configure_ac = 'configure.in'
if -f 'configure.in';
$configure_ac = 'configure.ac'
if -f 'configure.ac';
die "aclocal: `configure.ac' or `configure.in' is required\n"
if !$configure_ac;
open (CONFIGURE, $configure_ac)
|| die "aclocal: couldn't open `$configure_ac': $!\n";
# Make sure we include acinclude.m4 if it exists.
if (-f 'acinclude.m4')
{
&add_file ('acinclude.m4');
}
while (<CONFIGURE>)
{
# Remove comments from current line.
s/\bdnl\b.*$//;
s/\#.*$//;
if (/$obsolete_rx/o)
{
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";
$exit_status = 1;
}
}
close (CONFIGURE);
}
################################################################
# Check macros in acinclude.m4. If one is not used, warn.
sub check_acinclude
{
local ($key);
foreach $key (keys %map)
{
next unless $map{$key} eq 'acinclude.m4';
if (! $macro_seen{$key})
{
# FIXME: should print line number of acinclude.m4.
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 (@dirlist) = @_;
# First, scan acinclude.m4 if it exists.
if (-f 'acinclude.m4')
{
$file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
}
local ($m4dir);
foreach $m4dir (@dirlist)
{
opendir (DIR, $m4dir)
|| die "aclocal: couldn't open directory `$m4dir': $!\n";
local ($file, $fullfile);
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.
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 .= "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
{
local ($file) = @_;
# Only add a file once.
return if ($file_seen{$file});
$file_seen{$file} = 1;
$output .= $file_contents{$file} . "\n";
local ($a, @rlist);
foreach (split ("\n", $file_contents{$file}))
{
# This is a hack for Perl 4.
$a = $_;
if ($a =~ /$ac_require_rx/g)
{
push (@rlist, $1);
}
# Remove comments from current line.
s/\bdnl\b.*$//;
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_])/)
{
# Macro not found, but AM_ prefix found.
warn "aclocal: $configure_ac: $.: macro `$2' not found in library\n";
$exit_status = 1;
}
}
local ($macro);
foreach $macro (@rlist)
{
&add_macro ($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})
{
$map{$1} = $file;
}
# 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;
}
}
close (FILE);
return $contents;
}
################################################################
# Write output.
sub write_aclocal
{
return if ! length ($output);
print STDERR "aclocal: writing $output_file\n" if $verbose;
open (ACLOCAL, "> " . $output_file)
|| die "aclocal: couldn't open `$output_file' for writing: $!\n";
# In case we're running under MSWindows, don't write with CRLF.
# (This circumvents a bug in at least Cygwin bash where the shell
# parsing fails on lines ending with the continuation character '\'
# and CRLF.)
binmode ACLOCAL;
print ACLOCAL "# $output_file generated automatically by aclocal $VERSION\n";
print ACLOCAL "\
# Copyright 1996, 1997, 1998, 1999, 2000, 2001
# 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.
";
print ACLOCAL $output;
close (ACLOCAL);
}