autoconf/bin/autoheader.in

261 lines
6.6 KiB
Perl

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