mirror of
git://git.sv.gnu.org/autoconf
synced 2024-12-09 02:10:22 +08:00
261 lines
6.6 KiB
Perl
261 lines
6.6 KiB
Perl
#! @PERL@
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# -*- Perl -*-
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# @configure_input@
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eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
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if 0;
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# autoheader -- create `config.h.in' from `configure.ac'
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# Copyright (C) 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2002
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# 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, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# Written by Roland McGrath.
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# Rewritten in Perl by Akim Demaille.
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BEGIN
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{
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my $perllibdir = $ENV{'autom4te_perllibdir'} || '@datadir@';
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unshift @INC, "$perllibdir";
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}
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use Autom4te::General;
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use Autom4te::XFile;
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use strict;
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# Using `do FILE', we need `local' vars.
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use vars qw ($config_h %verbatim %symbol);
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# Lib files.
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my $autom4te = $ENV{'AUTOM4TE'} || '@autom4te-name@';
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local $config_h;
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my $config_h_in;
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my @include;
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my @warning;
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# $HELP
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# -----
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$help = <<"END";
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Usage: $0 [OPTION] ... [TEMPLATE-FILE]
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Create a template file of C \`\#define\' statements for \`configure\' to
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use. To this end, scan TEMPLATE-FILE, or \`configure.ac\' if present,
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or else \`configure.in\'.
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-h, --help print this help, then exit
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-V, --version print version number, then exit
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-v, --verbose verbosely report processing
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-d, --debug don\'t remove temporary files
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-f, --force consider all files obsolete
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-W, --warnings=CATEGORY report the warnings falling in CATEGORY
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Warning categories include:
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\`obsolete\' obsolete constructs
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\`all\' all the warnings
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\`no-CATEGORY\' turn off the warnings on CATEGORY
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\`none\' turn off all the warnings
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\`error\' warnings are error
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Library directories:
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-I, --include=DIR look for files in DIR (cumulative)
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Report bugs to <bug-autoconf\@gnu.org>.
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END
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# $VERSION
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# --------
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$version = <<"END";
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autoheader (@PACKAGE_NAME@) @VERSION@
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Written by Roland McGrath and Akim Demaille.
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Copyright 2002 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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END
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## ---------- ##
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## Routines. ##
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## ---------- ##
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# parse_args ()
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# -------------
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# Process any command line arguments.
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sub parse_args ()
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{
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my $srcdir;
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getopt ('I|include|A|autoconf-dir|m|macrodir|l|localdir=s' => \@include,
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'W|warning' => \@warning);
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if (! @ARGV)
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{
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my $configure_ac = find_configure_ac;
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die "$me: no input file\n"
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unless $configure_ac;
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push @ARGV, $configure_ac;
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}
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}
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## -------------- ##
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## Main program. ##
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## -------------- ##
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mktmpdir ('ah');
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parse_args;
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# Preach.
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my $config_h_top = find_file ("config.h.top?", @include);
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my $config_h_bot = find_file ("config.h.bot?", @include);
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my $acconfig_h = find_file ("acconfig.h?", @include);
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if ($config_h_top || $config_h_bot || $acconfig_h)
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{
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my $msg = << "END";
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Using auxiliary files such as \`acconfig.h\', \`config.h.bot\'
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and \`config.h.top\', to define templates for \`config.h.in\'
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is deprecated and discouraged.
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Using the third argument of \`AC_DEFINE\' and
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\`AC_DEFINE_UNQUOTED\' allows to define a template without
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\`acconfig.h\':
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AC_DEFINE([NEED_MAIN], 1,
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[Define if a function \`main\' is needed.])
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More sophisticated templates can also be produced, see the
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documentation.
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END
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$msg =~ s/^ /WARNING: /gm;
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print STDERR $msg;
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}
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# Set up autoconf.
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my $autoconf = "$autom4te --language=autoconf ";
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$autoconf .= join (' ', map { "--include=$_" } @include);
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$autoconf .= ' --debug' if $debug;
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$autoconf .= ' --force' if $force;
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$autoconf .= ' --verbose' if $verbose;
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# ----------------------- #
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# Real work starts here. #
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# ----------------------- #
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# Source what the traces are trying to tell us.
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verbose "$me: running $autoconf to trace from $ARGV[0]";
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xsystem ("$autoconf "
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. " --trace AC_CONFIG_HEADERS:'\$\$config_h ||= \"\$1\";'"
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. " --trace AH_OUTPUT:'\$\$verbatim{\"\$1\"} = \"\\\n\$2\";'"
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. " --trace AC_DEFINE_TRACE_LITERAL:'\$\$symbol{\"\$1\"} = 1;'"
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. " $ARGV[0] >$tmp/traces.pl");
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local (%verbatim, %symbol);
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do "$tmp/traces.pl";
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warn "couldn't parse $tmp/traces.pl: $@" if $@;
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die "$me: error: AC_CONFIG_HEADERS not found in $ARGV[0]\n"
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unless $config_h;
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# We template only the first CONFIG_HEADER.
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$config_h =~ s/ .*//;
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# Support "outfile[:infile]", defaulting infile="outfile.in".
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($config_h, $config_h_in) = split (':', $config_h, 2);
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$config_h_in ||= "$config_h.in";
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# %SYMBOL might contain things like `F77_FUNC(name,NAME)', but we keep
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# only the name of the macro.
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%symbol = map { s/\(.*//; $_ => 1 } keys %symbol;
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my $out = new Autom4te::XFile (">$tmp/config.hin");
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# Don't write "do not edit" -- it will get copied into the
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# config.h, which it's ok to edit.
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print $out "/* $config_h_in. Generated from $ARGV[0] by autoheader. */\n";
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# Dump the top.
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if ($config_h_top)
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{
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my $in = new Autom4te::XFile ($config_h_top);
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while ($_ = $in->getline)
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{
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print $out $_;
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}
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}
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# Dump `acconfig.h', except for its bottom portion.
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if ($acconfig_h)
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{
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my $in = new Autom4te::XFile ($acconfig_h);
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while ($_ = $in->getline)
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{
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last if /\@BOTTOM\@/;
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next if /\@TOP\@/;
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print $out $_;
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}
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}
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# Dump the templates from `configure.ac'.
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foreach (sort keys %verbatim)
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{
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print $out "$verbatim{$_}\n";
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}
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# Dump bottom portion of `acconfig.h'.
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if ($acconfig_h)
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{
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my $in = new Autom4te::XFile ($acconfig_h);
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my $dump = 0;
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while ($_ = $in->getline)
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{
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print $out $_ if $dump;
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$dump = 1 if /\@BOTTOM\@/;
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}
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}
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# Dump the bottom.
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if ($config_h_bot)
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{
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my $in = new Autom4te::XFile ($config_h_bot);
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while ($_ = $in->getline)
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{
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print $out $_;
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}
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}
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$out->close;
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# Check that all the symbols have a template.
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{
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my $in = new Autom4te::XFile ("$tmp/config.hin");
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while ($_ = $in->getline)
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{
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my ($symbol) = /^\#\s*\w+\s+(\w+)/
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or next;
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delete $symbol{$symbol};
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}
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foreach (sort keys %symbol)
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{
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print STDERR "$me: missing template: $_\n";
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}
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exit 1
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if keys %symbol;
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}
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update_file ("$tmp/config.hin", "$config_h_in");
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