5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
8 # autoheader -- create `config.h.in' from `configure.ac'
10 # Copyright (C) 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2002,
11 # 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
13 # This program is free software; you can redistribute it and/or modify
14 # it under the terms of the GNU General Public License as published by
15 # the Free Software Foundation; either version 2, or (at your option)
18 # This program is distributed in the hope that it will be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 # GNU General Public License for more details.
23 # You should have received a copy of the GNU General Public License
24 # along with this program; if not, write to the Free Software
25 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
28 # Written by Roland McGrath.
29 # Rewritten in Perl by Akim Demaille.
33 my $datadir = $ENV{'autom4te_perllibdir'} || '@datadir@';
34 unshift @INC, "$datadir";
36 # Override SHELL. On DJGPP SHELL may not be set to a shell
37 # that can handle redirection and quote arguments correctly,
38 # e.g.: COMMAND.COM. For DJGPP always use the shell that configure
40 $ENV{'SHELL'} = '@SHELL@' if ($^O eq 'dos');
43 use Autom4te::ChannelDefs;
44 use Autom4te::Channels;
45 use Autom4te::Configure_ac;
46 use Autom4te::FileUtils;
47 use Autom4te::General;
51 # Using `do FILE', we need `local' vars.
52 use vars qw ($config_h %verbatim %symbol);
55 my $autom4te = $ENV{'AUTOM4TE'} || '@bindir@/@autom4te-name@';
64 $help = "Usage: $0 [OPTION] ... [TEMPLATE-FILE]
66 Create a template file of C \`\#define\' statements for \`configure\' to
67 use. To this end, scan TEMPLATE-FILE, or \`configure.ac\' if present,
68 or else \`configure.in\'.
70 -h, --help print this help, then exit
71 -V, --version print version number, then exit
72 -v, --verbose verbosely report processing
73 -d, --debug don\'t remove temporary files
74 -f, --force consider all files obsolete
75 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
77 " . Autom4te::ChannelDefs::usage () . "
80 -B, --prepend-include=DIR prepend directory DIR to search path
81 -I, --include=DIR append directory DIR to search path
83 Report bugs to <bug-autoconf\@gnu.org>.
89 $version = "autoheader (@PACKAGE_NAME@) @VERSION@
90 Written by Roland McGrath and Akim Demaille.
92 Copyright (C) 2006 Free Software Foundation, Inc.
93 This is free software; see the source for copying conditions. There is NO
94 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
105 # Process any command line arguments.
111 getopt ('I|include=s' => \@include,
112 'B|prepend-include=s' => \@prepend_include,
113 'W|warnings=s' => \&parse_warnings);
117 my $configure_ac = require_configure_ac;
118 push @ARGV, $configure_ac;
128 switch_warning 'obsolete';
132 my $config_h_top = find_file ("config.h.top?",
133 reverse (@prepend_include), @include);
134 my $config_h_bot = find_file ("config.h.bot?",
135 reverse (@prepend_include), @include);
136 my $acconfig_h = find_file ("acconfig.h?",
137 reverse (@prepend_include), @include);
138 if ($config_h_top || $config_h_bot || $acconfig_h)
141 Using auxiliary files such as \`acconfig.h\', \`config.h.bot\'
142 and \`config.h.top\', to define templates for \`config.h.in\'
143 is deprecated and discouraged.
145 Using the third argument of \`AC_DEFINE\' and
146 \`AC_DEFINE_UNQUOTED\' allows one to define a template without
149 AC_DEFINE([NEED_FUNC_MAIN], 1,
150 [Define if a function \`main\' is needed.])
152 More sophisticated templates can also be produced, see the
155 $msg =~ s/^ /WARNING: /gm;
156 msg 'obsolete', $msg;
160 my $autoconf = "'$autom4te' --language=autoconf ";
161 $autoconf .= join (' ', map { "--include='$_'" } @include);
162 $autoconf .= join (' ', map { "--prepend-include='$_'" } @prepend_include);
163 $autoconf .= ' --debug' if $debug;
164 $autoconf .= ' --force' if $force;
165 $autoconf .= ' --verbose' if $verbose;
167 # ----------------------- #
168 # Real work starts here. #
169 # ----------------------- #
171 # Source what the traces are trying to tell us.
172 verb "$me: running $autoconf to trace from $ARGV[0]";
174 # If you change this list, update the
175 # `Autoheader-preselections' section of autom4te.in.
176 . ' --trace AC_CONFIG_HEADERS:\'$$config_h ||= \'"\'"\'$1\'"\'"\';\''
177 . ' --trace AH_OUTPUT:\'$$verbatim{\'"\'"\'$1\'"\'"\'} = \'"\'"\'$2\'"\'"\';\''
178 . ' --trace AC_DEFINE_TRACE_LITERAL:\'$$symbol{\'"\'"\'$1\'"\'"\'} = 1;\''
179 . " $ARGV[0] >$tmp/traces.pl");
181 local (%verbatim, %symbol);
182 debug "$me: \`do'ing $tmp/traces.pl:\n" . `sed 's/^/| /' $tmp/traces.pl`;
184 warn "couldn't parse $tmp/traces.pl: $@" if $@;
187 error "error: AC_CONFIG_HEADERS not found in $ARGV[0]";
191 # We template only the first CONFIG_HEADER.
192 $config_h =~ s/ .*//;
193 # Support "outfile[:infile]", defaulting infile="outfile.in".
194 ($config_h, $config_h_in) = split (':', $config_h, 2);
195 $config_h_in ||= "$config_h.in";
197 # %SYMBOL might contain things like `F77_FUNC(name,NAME)', but we keep
198 # only the name of the macro.
199 %symbol = map { s/\(.*//; $_ => 1 } keys %symbol;
201 my $out = new Autom4te::XFile (">$tmp/config.hin");
203 # Don't write "do not edit" -- it will get copied into the
204 # config.h, which it's ok to edit.
205 print $out "/* $config_h_in. Generated from $ARGV[0] by autoheader. */\n";
210 my $in = new Autom4te::XFile ($config_h_top);
211 while ($_ = $in->getline)
217 # Dump `acconfig.h', except for its bottom portion.
220 my $in = new Autom4te::XFile ($acconfig_h);
221 while ($_ = $in->getline)
223 last if /\@BOTTOM\@/;
229 # Dump the templates from `configure.ac'.
230 foreach (sort keys %verbatim)
232 print $out "\n$verbatim{$_}\n";
235 # Dump bottom portion of `acconfig.h'.
238 my $in = new Autom4te::XFile ($acconfig_h);
240 while ($_ = $in->getline)
242 print $out $_ if $dump;
243 $dump = 1 if /\@BOTTOM\@/;
250 my $in = new Autom4te::XFile ($config_h_bot);
251 while ($_ = $in->getline)
259 # Check that all the symbols have a template.
261 my $in = new Autom4te::XFile ("$tmp/config.hin");
262 my $suggest_ac_define = 1;
263 while ($_ = $in->getline)
265 my ($symbol) = /^\#\s*\w+\s+(\w+)/
267 delete $symbol{$symbol};
269 foreach (sort keys %symbol)
271 msg 'syntax', "warning: missing template: $_";
272 if ($suggest_ac_define)
274 msg 'syntax', "Use AC_DEFINE([$_], [], [Description])";
275 $suggest_ac_define = 0;
283 update_file ("$tmp/config.hin", "$config_h_in", $force);
285 ### Setup "GNU" style for perl-mode and cperl-mode.
287 ## perl-indent-level: 2
288 ## perl-continued-statement-offset: 2
289 ## perl-continued-brace-offset: 0
290 ## perl-brace-offset: 0
291 ## perl-brace-imaginary-offset: 0
292 ## perl-label-offset: -2
293 ## cperl-indent-level: 2
294 ## cperl-brace-offset: 0
295 ## cperl-continued-brace-offset: 0
296 ## cperl-label-offset: -2
297 ## cperl-extra-newline-before-brace: t
298 ## cperl-merge-trailing-else: nil
299 ## cperl-continued-statement-offset: 2