mirror of
git://git.sv.gnu.org/autoconf
synced 2024-12-15 02:20:10 +08:00
299 lines
7.9 KiB
Perl
299 lines
7.9 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, 2003
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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 $datadir = $ENV{'autom4te_perllibdir'} || '@datadir@';
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unshift @INC, "$datadir";
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# Override SHELL. On DJGPP SHELL may not be set to a shell
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# that can handle redirection and quote arguments correctly,
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# e.g.: COMMAND.COM. For DJGPP always use the shell that configure
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# has detected.
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$ENV{'SHELL'} = '@SHELL@' if ($^O eq 'dos');
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}
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use Autom4te::ChannelDefs;
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use Autom4te::Channels;
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use Autom4te::Configure_ac;
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use Autom4te::FileUtils;
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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'} || '@bindir@/@autom4te-name@';
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local $config_h;
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my $config_h_in;
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my @prepend_include;
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my @include;
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# $HELP
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# -----
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$help = "\
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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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" . Autom4te::ChannelDefs::usage () . "
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Library directories:
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-B, --prepend-include=DIR prepend directory DIR to search path
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-I, --include=DIR append directory DIR to search path
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Report bugs to <bug-autoconf\@gnu.org>.
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";
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# $VERSION
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# --------
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$version = "\
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autoheader (@PACKAGE_NAME@) @VERSION@
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Written by Roland McGrath and Akim Demaille.
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Copyright (C) 2003 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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";
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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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parse_WARNINGS;
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getopt ('I|include=s' => \@include,
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'B|prepend-include=s' => \@prepend_include,
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'W|warnings=s' => \&parse_warnings);
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if (! @ARGV)
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{
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my $configure_ac = require_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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switch_warning 'obsolete';
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parse_args;
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# Preach.
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my $config_h_top = find_file ("config.h.top?",
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reverse (@prepend_include), @include);
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my $config_h_bot = find_file ("config.h.bot?",
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reverse (@prepend_include), @include);
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my $acconfig_h = find_file ("acconfig.h?",
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reverse (@prepend_include), @include);
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if ($config_h_top || $config_h_bot || $acconfig_h)
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{
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my $msg = << "END";
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Using auxiliary files such as \`acconfig.h\', \`config.h.bot\'
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and \`config.h.top\', to define templates for \`config.h.in\'
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is deprecated and discouraged.
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Using the third argument of \`AC_DEFINE\' and
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\`AC_DEFINE_UNQUOTED\' allows to define a template without
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\`acconfig.h\':
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AC_DEFINE([NEED_FUNC_MAIN], 1,
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[Define if a function \`main\' is needed.])
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More sophisticated templates can also be produced, see the
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documentation.
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END
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$msg =~ s/^ /WARNING: /gm;
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msg 'obsolete', $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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$autoconf .= join (' ', map { "--prepend-include=$_" } @prepend_include);
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$autoconf .= ' --debug' if $debug;
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$autoconf .= ' --force' if $force;
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$autoconf .= ' --verbose' if $verbose;
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# ----------------------- #
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# Real work starts here. #
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# ----------------------- #
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# Source what the traces are trying to tell us.
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verb "$me: running $autoconf to trace from $ARGV[0]";
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xsystem ("$autoconf"
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# If you change this list, update the
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# `Autoheader-preselections' section of autom4te.in.
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. ' --trace AC_CONFIG_HEADERS:\'$$config_h ||= \'"\'"\'$1\'"\'"\';\''
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. ' --trace AH_OUTPUT:\'$$verbatim{\'"\'"\'$1\'"\'"\'} = \'"\'"\'$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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debug "$me: \`do'ing $tmp/traces.pl:\n" . `sed 's/^/| /' $tmp/traces.pl`;
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do "$tmp/traces.pl";
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warn "couldn't parse $tmp/traces.pl: $@" if $@;
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error "error: AC_CONFIG_HEADERS not found in $ARGV[0]"
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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 $out "\n$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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my $suggest_ac_define = 1;
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while ($_ = $in->getline)
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{
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my ($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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msg 'syntax', "warning: missing template: $_";
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if ($suggest_ac_define)
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{
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msg 'syntax', "Use AC_DEFINE([$_], [], [Description])";
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$suggest_ac_define = 0;
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}
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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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### Setup "GNU" style for perl-mode and cperl-mode.
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## Local Variables:
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## perl-indent-level: 2
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## perl-continued-statement-offset: 2
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## perl-continued-brace-offset: 0
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## perl-brace-offset: 0
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## perl-brace-imaginary-offset: 0
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## perl-label-offset: -2
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## cperl-indent-level: 2
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## cperl-brace-offset: 0
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## cperl-continued-brace-offset: 0
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## cperl-label-offset: -2
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## cperl-extra-newline-before-brace: t
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## cperl-merge-trailing-else: nil
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## cperl-continued-statement-offset: 2
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## End:
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