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) 1992-1994, 1996, 1998-2015 Free Software Foundation,
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 $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';
32 unshift @INC, "$pkgdatadir";
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>.
82 GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.
83 General help using GNU software: <http://www.gnu.org/gethelp/>.
89 $version = "autoheader (@PACKAGE_NAME@) @VERSION@
90 Copyright (C) @RELEASE_YEAR@ Free Software Foundation, Inc.
91 License GPLv3+/Autoconf: GNU GPL version 3 or later
92 <http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
93 This is free software: you are free to change and redistribute it.
94 There is NO WARRANTY, to the extent permitted by law.
96 Written by Roland McGrath and Akim Demaille.
107 # Process any command line arguments.
113 getopt ('I|include=s' => \@include,
114 'B|prepend-include=s' => \@prepend_include,
115 'W|warnings=s' => \&parse_warnings);
119 my $configure_ac = require_configure_ac;
120 push @ARGV, $configure_ac;
130 switch_warning 'obsolete';
134 my $config_h_top = find_file ("config.h.top?",
135 reverse (@prepend_include), @include);
136 my $config_h_bot = find_file ("config.h.bot?",
137 reverse (@prepend_include), @include);
138 my $acconfig_h = find_file ("acconfig.h?",
139 reverse (@prepend_include), @include);
140 if ($config_h_top || $config_h_bot || $acconfig_h)
143 Using auxiliary files such as 'acconfig.h', 'config.h.bot'
144 and 'config.h.top', to define templates for 'config.h.in'
145 is deprecated and discouraged.
147 Using the third argument of 'AC_DEFINE_UNQUOTED' and
148 'AC_DEFINE' allows one to define a template without
151 AC_DEFINE([NEED_FUNC_MAIN], 1,
152 [Define if a function 'main' is needed.])
154 More sophisticated templates can also be produced, see the
157 $msg =~ s/^ /WARNING: /gm;
158 msg 'obsolete', $msg;
162 my $autoconf = "'$autom4te' --language=autoconf ";
163 $autoconf .= join (' --include=', '', map { shell_quote ($_) } @include);
164 $autoconf .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include);
165 $autoconf .= ' --debug' if $debug;
166 $autoconf .= ' --force' if $force;
167 $autoconf .= ' --verbose' if $verbose;
169 # ----------------------- #
170 # Real work starts here. #
171 # ----------------------- #
173 # Source what the traces are trying to tell us.
174 verb "$me: running $autoconf to trace from $ARGV[0]";
175 my $quoted_tmp = shell_quote ($tmp);
177 # If you change this list, update the
178 # 'Autoheader-preselections' section of autom4te.in.
179 . ' --trace AC_CONFIG_HEADERS:\'$$config_h ||= \'"\'"\'$1\'"\'"\';\''
180 . ' --trace AH_OUTPUT:\'$$verbatim{\'"\'"\'$1\'"\'"\'} = \'"\'"\'$2\'"\'"\';\''
181 . ' --trace AC_DEFINE_TRACE_LITERAL:\'$$symbol{\'"\'"\'$1\'"\'"\'} = 1;\''
182 . " " . shell_quote ($ARGV[0]) . " >$quoted_tmp/traces.pl");
184 local (%verbatim, %symbol);
185 debug "$me: 'do'ing $tmp/traces.pl:\n" . `sed 's/^/| /' $quoted_tmp/traces.pl`;
187 warn "couldn't parse $tmp/traces.pl: $@" if $@;
190 error "error: AC_CONFIG_HEADERS not found in $ARGV[0]";
194 # We template only the first CONFIG_HEADER.
195 $config_h =~ s/ .*//;
196 # Support "outfile[:infile]", defaulting infile="outfile.in".
197 ($config_h, $config_h_in) = split (':', $config_h, 2);
198 $config_h_in ||= "$config_h.in";
200 # %SYMBOL might contain things like 'F77_FUNC(name,NAME)', but we keep
201 # only the name of the macro.
202 %symbol = map { s/\(.*//; $_ => 1 } keys %symbol;
204 my $out = new Autom4te::XFile ("> " . open_quote ("$tmp/config.hin"));
206 # Don't write "do not edit" -- it will get copied into the
207 # config.h, which it's ok to edit.
208 print $out "/* $config_h_in. Generated from $ARGV[0] by autoheader. */\n";
213 my $in = new Autom4te::XFile ("< " . open_quote ($config_h_top));
214 while ($_ = $in->getline)
220 # Dump 'acconfig.h', except for its bottom portion.
223 my $in = new Autom4te::XFile ("< " . open_quote ($acconfig_h));
224 while ($_ = $in->getline)
226 last if /\@BOTTOM\@/;
232 # Dump the templates from 'configure.ac'.
233 foreach (sort keys %verbatim)
235 print $out "\n$verbatim{$_}\n";
238 # Dump bottom portion of 'acconfig.h'.
241 my $in = new Autom4te::XFile ("< " . open_quote ($acconfig_h));
243 while ($_ = $in->getline)
245 print $out $_ if $dump;
246 $dump = 1 if /\@BOTTOM\@/;
253 my $in = new Autom4te::XFile ("< " . open_quote ($config_h_bot));
254 while ($_ = $in->getline)
262 # Check that all the symbols have a template.
264 my $in = new Autom4te::XFile ("< " . open_quote ("$tmp/config.hin"));
265 my $suggest_ac_define = 1;
266 while ($_ = $in->getline)
268 my ($symbol) = /^\#\s*\w+\s+(\w+)/
270 delete $symbol{$symbol};
272 foreach (sort keys %symbol)
274 msg 'syntax', "warning: missing template: $_";
275 if ($suggest_ac_define)
277 msg 'syntax', "Use AC_DEFINE([$_], [], [Description])";
278 $suggest_ac_define = 0;
286 update_file ("$tmp/config.hin", "$config_h_in", $force);
288 ### Setup "GNU" style for perl-mode and cperl-mode.
290 ## perl-indent-level: 2
291 ## perl-continued-statement-offset: 2
292 ## perl-continued-brace-offset: 0
293 ## perl-brace-offset: 0
294 ## perl-brace-imaginary-offset: 0
295 ## perl-label-offset: -2
296 ## cperl-indent-level: 2
297 ## cperl-brace-offset: 0
298 ## cperl-continued-brace-offset: 0
299 ## cperl-label-offset: -2
300 ## cperl-extra-newline-before-brace: t
301 ## cperl-merge-trailing-else: nil
302 ## cperl-continued-statement-offset: 2