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, 2007 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 3 of the License, or
16 # (at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
26 # Written by Roland McGrath.
27 # Rewritten in Perl by Akim Demaille.
31 my $datadir = $ENV{'autom4te_perllibdir'} || '@datadir@';
32 unshift @INC, "$datadir";
34 # Override SHELL. On DJGPP SHELL may not be set to a shell
35 # that can handle redirection and quote arguments correctly,
36 # e.g.: COMMAND.COM. For DJGPP always use the shell that configure
38 $ENV{'SHELL'} = '@SHELL@' if ($^O eq 'dos');
41 use Autom4te::ChannelDefs;
42 use Autom4te::Channels;
43 use Autom4te::Configure_ac;
44 use Autom4te::FileUtils;
45 use Autom4te::General;
49 # Using `do FILE', we need `local' vars.
50 use vars qw ($config_h %verbatim %symbol);
53 my $autom4te = $ENV{'AUTOM4TE'} || '@bindir@/@autom4te-name@';
62 $help = "Usage: $0 [OPTION] ... [TEMPLATE-FILE]
64 Create a template file of C \`\#define\' statements for \`configure\' to
65 use. To this end, scan TEMPLATE-FILE, or \`configure.ac\' if present,
66 or else \`configure.in\'.
68 -h, --help print this help, then exit
69 -V, --version print version number, then exit
70 -v, --verbose verbosely report processing
71 -d, --debug don\'t remove temporary files
72 -f, --force consider all files obsolete
73 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
75 " . Autom4te::ChannelDefs::usage () . "
78 -B, --prepend-include=DIR prepend directory DIR to search path
79 -I, --include=DIR append directory DIR to search path
81 Report bugs to <bug-autoconf\@gnu.org>.
87 $version = "autoheader (@PACKAGE_NAME@) @VERSION@
88 Copyright (C) @RELEASE_YEAR@ Free Software Foundation, Inc.
89 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
90 This is free software: you are free to change and redistribute it.
91 There is NO WARRANTY, to the extent permitted by law.
93 Written by Roland McGrath and Akim Demaille.
104 # Process any command line arguments.
110 getopt ('I|include=s' => \@include,
111 'B|prepend-include=s' => \@prepend_include,
112 'W|warnings=s' => \&parse_warnings);
116 my $configure_ac = require_configure_ac;
117 push @ARGV, $configure_ac;
127 switch_warning 'obsolete';
131 my $config_h_top = find_file ("config.h.top?",
132 reverse (@prepend_include), @include);
133 my $config_h_bot = find_file ("config.h.bot?",
134 reverse (@prepend_include), @include);
135 my $acconfig_h = find_file ("acconfig.h?",
136 reverse (@prepend_include), @include);
137 if ($config_h_top || $config_h_bot || $acconfig_h)
140 Using auxiliary files such as \`acconfig.h\', \`config.h.bot\'
141 and \`config.h.top\', to define templates for \`config.h.in\'
142 is deprecated and discouraged.
144 Using the third argument of \`AC_DEFINE\' and
145 \`AC_DEFINE_UNQUOTED\' allows one to define a template without
148 AC_DEFINE([NEED_FUNC_MAIN], 1,
149 [Define if a function \`main\' is needed.])
151 More sophisticated templates can also be produced, see the
154 $msg =~ s/^ /WARNING: /gm;
155 msg 'obsolete', $msg;
159 my $autoconf = "'$autom4te' --language=autoconf ";
160 $autoconf .= join (' ', map { "--include='$_'" } @include);
161 $autoconf .= join (' ', map { "--prepend-include='$_'" } @prepend_include);
162 $autoconf .= ' --debug' if $debug;
163 $autoconf .= ' --force' if $force;
164 $autoconf .= ' --verbose' if $verbose;
166 # ----------------------- #
167 # Real work starts here. #
168 # ----------------------- #
170 # Source what the traces are trying to tell us.
171 verb "$me: running $autoconf to trace from $ARGV[0]";
173 # If you change this list, update the
174 # `Autoheader-preselections' section of autom4te.in.
175 . ' --trace AC_CONFIG_HEADERS:\'$$config_h ||= \'"\'"\'$1\'"\'"\';\''
176 . ' --trace AH_OUTPUT:\'$$verbatim{\'"\'"\'$1\'"\'"\'} = \'"\'"\'$2\'"\'"\';\''
177 . ' --trace AC_DEFINE_TRACE_LITERAL:\'$$symbol{\'"\'"\'$1\'"\'"\'} = 1;\''
178 . " $ARGV[0] >$tmp/traces.pl");
180 local (%verbatim, %symbol);
181 debug "$me: \`do'ing $tmp/traces.pl:\n" . `sed 's/^/| /' $tmp/traces.pl`;
183 warn "couldn't parse $tmp/traces.pl: $@" if $@;
186 error "error: AC_CONFIG_HEADERS not found in $ARGV[0]";
190 # We template only the first CONFIG_HEADER.
191 $config_h =~ s/ .*//;
192 # Support "outfile[:infile]", defaulting infile="outfile.in".
193 ($config_h, $config_h_in) = split (':', $config_h, 2);
194 $config_h_in ||= "$config_h.in";
196 # %SYMBOL might contain things like `F77_FUNC(name,NAME)', but we keep
197 # only the name of the macro.
198 %symbol = map { s/\(.*//; $_ => 1 } keys %symbol;
200 my $out = new Autom4te::XFile (">$tmp/config.hin");
202 # Don't write "do not edit" -- it will get copied into the
203 # config.h, which it's ok to edit.
204 print $out "/* $config_h_in. Generated from $ARGV[0] by autoheader. */\n";
209 my $in = new Autom4te::XFile ($config_h_top);
210 while ($_ = $in->getline)
216 # Dump `acconfig.h', except for its bottom portion.
219 my $in = new Autom4te::XFile ($acconfig_h);
220 while ($_ = $in->getline)
222 last if /\@BOTTOM\@/;
228 # Dump the templates from `configure.ac'.
229 foreach (sort keys %verbatim)
231 print $out "\n$verbatim{$_}\n";
234 # Dump bottom portion of `acconfig.h'.
237 my $in = new Autom4te::XFile ($acconfig_h);
239 while ($_ = $in->getline)
241 print $out $_ if $dump;
242 $dump = 1 if /\@BOTTOM\@/;
249 my $in = new Autom4te::XFile ($config_h_bot);
250 while ($_ = $in->getline)
258 # Check that all the symbols have a template.
260 my $in = new Autom4te::XFile ("$tmp/config.hin");
261 my $suggest_ac_define = 1;
262 while ($_ = $in->getline)
264 my ($symbol) = /^\#\s*\w+\s+(\w+)/
266 delete $symbol{$symbol};
268 foreach (sort keys %symbol)
270 msg 'syntax', "warning: missing template: $_";
271 if ($suggest_ac_define)
273 msg 'syntax', "Use AC_DEFINE([$_], [], [Description])";
274 $suggest_ac_define = 0;
282 update_file ("$tmp/config.hin", "$config_h_in", $force);
284 ### Setup "GNU" style for perl-mode and cperl-mode.
286 ## perl-indent-level: 2
287 ## perl-continued-statement-offset: 2
288 ## perl-continued-brace-offset: 0
289 ## perl-brace-offset: 0
290 ## perl-brace-imaginary-offset: 0
291 ## perl-label-offset: -2
292 ## cperl-indent-level: 2
293 ## cperl-brace-offset: 0
294 ## cperl-continued-brace-offset: 0
295 ## cperl-label-offset: -2
296 ## cperl-extra-newline-before-brace: t
297 ## cperl-merge-trailing-else: nil
298 ## cperl-continued-statement-offset: 2