1#! @PERL@ 2# -*- Perl -*- 3# @configure_input@ 4 5eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac' 6 if 0; 7 8# autoheader -- create `config.h.in' from `configure.ac' 9 10# Copyright (C) 1992-1994, 1996, 1998-2012 Free Software Foundation, 11# Inc. 12 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. 17 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. 22 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/>. 25 26# Written by Roland McGrath. 27# Rewritten in Perl by Akim Demaille. 28 29BEGIN 30{ 31 my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@'; 32 unshift @INC, "$pkgdatadir"; 33 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 37 # has detected. 38 $ENV{'SHELL'} = '@SHELL@' if ($^O eq 'dos'); 39} 40 41use Autom4te::ChannelDefs; 42use Autom4te::Channels; 43use Autom4te::Configure_ac; 44use Autom4te::FileUtils; 45use Autom4te::General; 46use Autom4te::XFile; 47use strict; 48 49# Using `do FILE', we need `local' vars. 50use vars qw ($config_h %verbatim %symbol); 51 52# Lib files. 53my $autom4te = $ENV{'AUTOM4TE'} || '@bindir@/@autom4te-name@'; 54local $config_h; 55my $config_h_in; 56my @prepend_include; 57my @include; 58 59 60# $HELP 61# ----- 62$help = "Usage: $0 [OPTION]... [TEMPLATE-FILE] 63 64Create a template file of C \`\#define\' statements for \`configure\' to 65use. To this end, scan TEMPLATE-FILE, or \`configure.ac\' if present, 66or else \`configure.in\'. 67 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 74 75" . Autom4te::ChannelDefs::usage () . " 76 77Library directories: 78 -B, --prepend-include=DIR prepend directory DIR to search path 79 -I, --include=DIR append directory DIR to search path 80 81Report bugs to <bug-autoconf\@gnu.org>. 82GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>. 83General help using GNU software: <http://www.gnu.org/gethelp/>. 84"; 85 86 87# $VERSION 88# -------- 89$version = "autoheader (@PACKAGE_NAME@) @VERSION@ 90Copyright (C) @RELEASE_YEAR@ Free Software Foundation, Inc. 91License GPLv3+/Autoconf: GNU GPL version 3 or later 92<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html> 93This is free software: you are free to change and redistribute it. 94There is NO WARRANTY, to the extent permitted by law. 95 96Written by Roland McGrath and Akim Demaille. 97"; 98 99 100## ---------- ## 101## Routines. ## 102## ---------- ## 103 104 105# parse_args () 106# ------------- 107# Process any command line arguments. 108sub parse_args () 109{ 110 my $srcdir; 111 112 parse_WARNINGS; 113 getopt ('I|include=s' => \@include, 114 'B|prepend-include=s' => \@prepend_include, 115 'W|warnings=s' => \&parse_warnings); 116 117 if (! @ARGV) 118 { 119 my $configure_ac = require_configure_ac; 120 push @ARGV, $configure_ac; 121 } 122} 123 124 125## -------------- ## 126## Main program. ## 127## -------------- ## 128 129mktmpdir ('ah'); 130switch_warning 'obsolete'; 131parse_args; 132 133# Preach. 134my $config_h_top = find_file ("config.h.top?", 135 reverse (@prepend_include), @include); 136my $config_h_bot = find_file ("config.h.bot?", 137 reverse (@prepend_include), @include); 138my $acconfig_h = find_file ("acconfig.h?", 139 reverse (@prepend_include), @include); 140if ($config_h_top || $config_h_bot || $acconfig_h) 141 { 142 my $msg = << "END"; 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. 146 147 Using the third argument of \`AC_DEFINE\' and 148 \`AC_DEFINE_UNQUOTED\' allows one to define a template without 149 \`acconfig.h\': 150 151 AC_DEFINE([NEED_FUNC_MAIN], 1, 152 [Define if a function \`main\' is needed.]) 153 154 More sophisticated templates can also be produced, see the 155 documentation. 156END 157 $msg =~ s/^ /WARNING: /gm; 158 msg 'obsolete', $msg; 159 } 160 161# Set up autoconf. 162my $autoconf = "'$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 $verbose; 168 169# ----------------------- # 170# Real work starts here. # 171# ----------------------- # 172 173# Source what the traces are trying to tell us. 174verb "$me: running $autoconf to trace from $ARGV[0]"; 175my $quoted_tmp = shell_quote ($tmp); 176xsystem ("$autoconf" 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]) . " >$quoted_tmp/traces.pl"); 183 184local (%verbatim, %symbol); 185debug "$me: \`do'ing $tmp/traces.pl:\n" . `sed 's/^/| /' $quoted_tmp/traces.pl`; 186do "$tmp/traces.pl"; 187warn "couldn't parse $tmp/traces.pl: $@" if $@; 188unless ($config_h) 189 { 190 error "error: AC_CONFIG_HEADERS not found in $ARGV[0]"; 191 exit 1; 192 } 193 194# We template only the first CONFIG_HEADER. 195$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"; 199 200# %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; 203 204my $out = new Autom4te::XFile ("> " . open_quote ("$tmp/config.hin")); 205 206# Don't write "do not edit" -- it will get copied into the 207# config.h, which it's ok to edit. 208print $out "/* $config_h_in. Generated from $ARGV[0] by autoheader. */\n"; 209 210# Dump the top. 211if ($config_h_top) 212 { 213 my $in = new Autom4te::XFile ("< " . open_quote ($config_h_top)); 214 while ($_ = $in->getline) 215 { 216 print $out $_; 217 } 218 } 219 220# Dump `acconfig.h', except for its bottom portion. 221if ($acconfig_h) 222 { 223 my $in = new Autom4te::XFile ("< " . open_quote ($acconfig_h)); 224 while ($_ = $in->getline) 225 { 226 last if /\@BOTTOM\@/; 227 next if /\@TOP\@/; 228 print $out $_; 229 } 230 } 231 232# Dump the templates from `configure.ac'. 233foreach (sort keys %verbatim) 234 { 235 print $out "\n$verbatim{$_}\n"; 236 } 237 238# Dump bottom portion of `acconfig.h'. 239if ($acconfig_h) 240 { 241 my $in = new Autom4te::XFile ("< " . open_quote ($acconfig_h)); 242 my $dump = 0; 243 while ($_ = $in->getline) 244 { 245 print $out $_ if $dump; 246 $dump = 1 if /\@BOTTOM\@/; 247 } 248 } 249 250# Dump the bottom. 251if ($config_h_bot) 252 { 253 my $in = new Autom4te::XFile ("< " . open_quote ($config_h_bot)); 254 while ($_ = $in->getline) 255 { 256 print $out $_; 257 } 258 } 259 260$out->close; 261 262# Check that all the symbols have a template. 263{ 264 my $in = new Autom4te::XFile ("< " . open_quote ("$tmp/config.hin")); 265 my $suggest_ac_define = 1; 266 while ($_ = $in->getline) 267 { 268 my ($symbol) = /^\#\s*\w+\s+(\w+)/ 269 or next; 270 delete $symbol{$symbol}; 271 } 272 foreach (sort keys %symbol) 273 { 274 msg 'syntax', "warning: missing template: $_"; 275 if ($suggest_ac_define) 276 { 277 msg 'syntax', "Use AC_DEFINE([$_], [], [Description])"; 278 $suggest_ac_define = 0; 279 } 280 281 } 282 exit 1 283 if keys %symbol; 284} 285 286update_file ("$tmp/config.hin", "$config_h_in", $force); 287 288### Setup "GNU" style for perl-mode and cperl-mode. 289## Local Variables: 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: 2 303## End: 304