5 # aclocal - create aclocal.m4 by scanning configure.in
6 # Copyright (C) 1996, 1997 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.
91 $obsolete_rx = '(' . join ('|', @obsolete_macros) . ')';
93 # Matches a macro definition.
94 $ac_defun_rx = "AC_DEFUN\\(\\[?([^],)\n]+)\\]?";
96 # Matches an AC_REQUIRE line.
97 $ac_require_rx = "AC_REQUIRE\\(\\[?([^])]*)\\]?\\)";
101 local (@dirlist) = &parse_arguments (@ARGV);
102 &scan_m4_files ($acdir, @dirlist);
112 ################################################################
114 # Print usage and exit.
117 local ($status) = @_;
119 print "Usage: aclocal [OPTIONS] ...\n\n";
120 print "Generate aclocal.m4 by scanning configure.in\n
121 --acdir=DIR directory holding config files
122 --help print this help, then exit
123 -I DIR add directory to search list for .m4 files
124 --output=FILE put output in FILE (default aclocal.m4)
125 --verbose don't be silent
126 --version print version number, then exit
128 Report bugs to <automake-bugs\@prep.ai.mit.edu>.\n";
133 # Parse command line.
136 local (@arglist) = @_;
141 if ($arglist[0] =~ /^--acdir=(.+)$/)
145 elsif ($arglist[0] =~/^--output=(.+)$/)
149 elsif ($arglist[0] eq '-I')
152 push (@dirlist, $arglist[0]);
154 elsif ($arglist[0] eq '--verbose')
158 elsif ($arglist[0] eq '--version')
160 print "aclocal (GNU $PACKAGE) $VERSION\n\n";
161 print "Copyright (C) 1996, 1997 Free Software Foundation, Inc.\n";
162 print "This is free software; see the source for copying conditions. There is NO\n";
163 print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n";
164 print "Written by Tom Tromey <tromey\@cygnus.com>\n";
167 elsif ($arglist[0] eq '--help')
173 die "aclocal: unrecognized option -- \`$arglist[0]'\nTry \`aclocal --help' for more information.\n";
182 ################################################################
186 open (CONFIGURE, "configure.in")
187 || die "aclocal: couldn't open \`configure.in': $!\n";
189 # Make sure we include acinclude.m4 if it exists.
190 if (-f 'acinclude.m4')
192 &add_file ('acinclude.m4');
197 # Remove comments from current line.
204 warn "aclocal: configure.in: $.: obsolete macro \`$_'\n";
209 # Search for things we know about. The "search" sub is
210 # constructed dynamically, above.
217 ################################################################
219 # Check macros in acinclude.m4. If one is not used, warn.
224 foreach $key (keys %map)
226 next unless $map{$key} eq 'acinclude.m4';
227 if (! $macro_seen{$key})
229 # FIXME: should print line number of acinclude.m4.
230 warn "aclocal: macro \`$key' defined in acinclude.m4 but never used\n";
235 ################################################################
237 # Scan all the installed m4 files and construct a map.
240 local (@dirlist) = @_;
242 # First, scan acinclude.m4 if it exists.
243 if (-f 'acinclude.m4')
245 $file_contents{'acinclude.m4'} = &scan_file ('acinclude.m4');
249 foreach $m4dir (@dirlist)
251 opendir (DIR, $m4dir)
252 || die "aclocal: couldn't open directory \`$m4dir': $!\n";
253 local ($file, $fullfile, $expr);
254 foreach $file (sort grep (! /^\./, readdir (DIR)))
256 # Only examine .m4 files.
257 next unless $file =~ /\.m4$/;
259 # Skip some files when running out of srcdir.
260 next if $file eq 'aclocal.m4';
262 $fullfile = $m4dir . '/' . $file;
263 $file_contents{$fullfile} = &scan_file ($fullfile);
268 # Construct a new function that does the searching. We use a
269 # function (instead of just evalling $search in the loop) so that
270 # "die" is correctly and easily propagated if run.
271 local ($search, $expr, $key) = '';
272 foreach $key (keys %map)
274 # EXPR is a regexp matching the name of the macro.
275 ($expr = $key) =~ s/(\W)/\\$1/g;
276 $search .= "&add_macro ('" . $key . "') if /" . $expr . "/;\n";
278 eval 'sub search { ' . $search . '};';
279 die "internal error: $@\n search is $search " if $@;
282 ################################################################
284 # Add a macro to the output.
289 # We want to ignore AC_ macros. However, if an AC_ macro is
290 # defined in (eg) acinclude.m4, then we want to make sure we mark
292 return if $macro =~ /^AC_/ && ! defined $map{$macro};
294 if (! defined $map{$macro})
296 warn "aclocal: macro \`$macro' required but not defined\n";
301 print STDERR "saw macro $macro\n" if $verbosity;
302 $macro_seen{$macro} = 1;
303 &add_file ($map{$macro});
306 # Add a file to output.
311 # Only add a file once.
312 return if ($file_seen{$file});
313 $file_seen{$file} = 1;
315 $output .= $file_contents{$file} . "\n";
317 foreach (split ("\n", $file_contents{$file}))
319 if (/$ac_require_rx/g)
324 # This function constructed dynamically.
329 foreach $macro (@rlist)
335 # Scan a single M4 file. Return contents.
341 || die "aclocal: couldn't open \`$file': $!\n";
342 local ($contents) = '';
352 if (!defined $map{$1})
356 # Allow acinclude.m4 to override other macro files.
357 elsif ($map{$1} ne 'acinclude.m4' || $file eq 'acinclude.m4')
359 warn "aclocal: $file: $.: duplicated macro \`$1'\n";
362 print STDERR "Found macro $1 in $file: $.\n" if $verbosity;
370 ################################################################
375 return if ! length ($output);
377 print STDERR "Writing aclocal.m4\n" if $verbosity;
379 open (ACLOCAL, "> aclocal.m4")
380 || die "aclocal: couldn't open \`aclocal.m4' for writing: $!\n";
381 print ACLOCAL "dnl aclocal.m4 generated automatically by aclocal $VERSION\n";
383 dnl Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
384 dnl This Makefile.in is free software; the Free Software Foundation
385 dnl gives unlimited permission to copy and/or distribute it,
386 dnl with or without modifications, as long as this notice is preserved.
388 dnl This program is distributed in the hope that it will be useful,
389 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
390 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
391 dnl PARTICULAR PURPOSE.
394 print ACLOCAL $output;