5 # aclocal - create aclocal.m4 by scanning configure.in
6 # Copyright (C) 1996 Free Software Foundation, Inc.
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2, or (at your option)
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
23 # Written by Tom Tromey <tromey@cygnus.com>.
25 eval 'exec @PERL@ -S $0 ${1+"$@"}'
28 # aclocal - scan configure.in and generate aclocal.m4.
31 $VERSION = "@VERSION@";
32 $PACKAGE = "@PACKAGE@";
34 # Note that this isn't pkgdatadir, but a separate directory.
35 $acdir = "@datadir@/aclocal";
46 $output_file = 'aclocal.m4';
48 # Which macros have been seen.
51 # Which files have been seen.
54 # Map macro names to file names.
57 # Map file names to file contents.
81 # Now part of autoconf proper, under a different name.
85 # These aren't quite obsolete.
92 $obsolete_rx = '(' . join ('|', @obsolete_macros) . ')';
94 # Matches a macro definition.
95 $ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";
97 # Matches an AC_REQUIRE line.
98 $ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";
102 &parse_arguments (@ARGV);
103 &scan_m4_files ($acdir);
113 ################################################################
115 # Print usage and exit.
118 local ($status) = @_;
120 print "Usage: aclocal [OPTIONS] ...\n";
122 --acdir=DIR directory holding config files
123 --help print this help, then exit
124 --output=FILE put output in FILE (default aclocal.m4)
125 --verbose don't be silent
126 --version print version number, then exit
128 Report bugs to <bug-gnu-utils\@prep.ai.mit.edu>\n";
133 # Parse command line.
136 local (@arglist) = @_;
140 if ($arglist[0] =~ /^--acdir=(.+)$/)
144 elsif ($arglist[0] =~/^--output=(.+)$/)
148 elsif ($arglist[0] eq '--verbose')
152 elsif ($arglist[0] eq '--version')
154 print "aclocal (GNU $PACKAGE) $VERSION\n";
155 print "Copyright (C) 1996 Free Software Foundation, Inc.\n";
156 print "aclocal comes with ABSOLUTELY NO WARRANTY.\n";
157 print "You may redistribute copies of aclocal\n";
158 print "under the terms of the GNU General Public License.\n";
159 print "For more information about these matters, see the file named COPYING.\n";
162 elsif ($arglist[0] eq '--help')
168 die "aclocal: unrecognized option -- \`$arglist[0]'\nTry \`aclocal --help' for more information.\n";
175 ################################################################
179 open (CONFIGURE, "configure.in")
180 || die "aclocal: couldn't open \`configure.in': $!\n";
182 # Make sure we include acinclude.m4 if it exists.
183 if (-f 'acinclude.m4')
185 &add_file ('acinclude.m4');
190 # Remove comments from current line.
197 warn "aclocal: configure.in: $.: obsolete macro \`$_'\n";
202 # Search for things we know about. The "search" sub is
203 # constructed dynamically, above.
210 ################################################################
212 # Check macros in acinclude.m4. If one is not used, warn.
217 foreach $key (keys %map)
219 next unless $map{$key} eq 'acinclude.m4';
220 if (! $macro_seen{$key})
222 warn "aclocal: macro \`$key' defined in acinclude.m4 but never used\n";
227 ################################################################
229 # Scan all the installed m4 files and construct a map.
234 # First, scan acinclude.m4 if it exists.
235 if (-f 'acinclude.m4')
237 $file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
240 opendir (DIR, $m4dir)
241 || die "aclocal: couldn't open directory \`$m4dir': $!\n";
242 local ($file, $fullfile, $expr);
243 foreach $file (sort grep (! /^\./, readdir (DIR)))
245 # Only examine .m4 files.
246 next unless $file =~ /\.m4$/;
248 # Skip some files when running out of srcdir.
249 next if $file eq 'aclocal.m4';
251 $fullfile = $m4dir . '/' . $file;
252 $file_contents{$fullfile} = &scan_file ($fullfile);
256 # Construct a new function that does the searching. We use a
257 # function (instead of just evalling $search in the loop) so that
258 # "die" is correctly and easily propagated if run.
259 local ($search, $expr, $key);
260 foreach $key (keys %map)
262 # EXPR is a regexp matching the name of the macro.
263 ($expr = $key) =~ s/(\W)/\\$1/g;
264 $search .= "&add_macro ('" . $key . "') if /" . $expr . "/;\n";
266 eval 'sub search { ' . $search . '};';
267 die "internal error: $@\n search is $search " if $@;
270 ################################################################
272 # Add a macro to the output.
278 return if $macro =~ /^AC_/;
280 if (! defined $map{$macro})
282 warn "aclocal: macro \`$macro' required but not defined\n";
287 print STDERR "saw macro $macro\n" if $verbosity;
288 $macro_seen{$macro} = 1;
289 &add_file ($map{$macro});
292 # Add a file to output.
297 # Only add a file once.
298 return if ($file_seen{$file});
299 $file_seen{$file} = 1;
301 $output .= $file_contents{$file} . "\n";
303 foreach (split ("\n", $file_contents{$file}))
305 if (/$ac_require_rx/g)
310 # This function constructed dynamically.
315 foreach $macro (@rlist)
321 # Scan a single M4 file. Return contents.
327 || die "aclocal: couldn't open \`$file': $!\n";
328 local ($contents) = '';
338 if (!defined $map{$1})
342 # Allow acinclude.m4 to override other macro files.
343 elsif ($map{$1} ne 'acinclude.m4' || $file eq 'acinclude.m4')
345 warn "aclocal: $file: $.: duplicated macro \`$1'\n";
348 print STDERR "Found macro $1 in $file: $.\n" if $verbosity;
356 ################################################################
361 return if ! length ($output);
363 print STDERR "Writing aclocal.m4\n" if $verbosity;
365 open (ACLOCAL, "> aclocal.m4")
366 || die "aclocal: couldn't open \`aclocal.m4' for writing: $!\n";
367 print ACLOCAL "dnl aclocal.m4 generated automatically by aclocal $VERSION\n\n";
368 print ACLOCAL $output;