2 # Check a gnulib module.
4 # Copyright (C) 2005, 2006 Free Software Foundation, Inc.
6 # This file is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
22 # Read a module description file and derive the set of files
23 # included directly by any .c or .h file listed in the `Files:' section.
24 # Take the union of all such sets for any dependent modules.
25 # Then, compare that set with the set derived from the names
26 # listed in the various Files: sections.
28 # This script makes no attempt to diagnose invalid or empty
29 # module-description files.
31 # Written by Jim Meyering
34 # for each .m4 file listed in the Files: section(s)
35 # parse it for AC_LIBSOURCES directives, and accumulate the set
36 # of files `required' via all AC_LIBSOURCES.
37 # If this set is not empty, ensure that it contains
38 # the same (.c and .h only?) files as are listed in the Files: sections.
44 my $COPYRIGHT_NOTICE = "Copyright (C) 2006 Free Software Foundation, Inc.\n".
45 "This is free software. You may redistribute copies of it under the terms of\n".
46 "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n".
47 "There is NO WARRANTY, to the extent permitted by law.\n";
49 (my $VERSION = '$Revision: 1.5 $ ') =~ tr/[0-9].//cd;
50 (my $ME = $0) =~ s|.*/||;
52 use constant ST_INIT => 1;
53 use constant ST_FILES => 2;
54 use constant ST_DEPENDENTS => 3;
56 # Parse a module file (returning list of Files: names and
57 # list of dependent-modules.
58 # my ($file, $dep) = parse_module_file $module_file;
59 sub parse_module_file ($)
61 my ($module_file) = @_;
63 open FH, '<', $module_file
64 or die "$ME: can't open `$module_file' for reading: $!\n";
70 while (defined (my $line = <FH>))
72 if ($state eq ST_INIT)
74 if ($line =~ /^Files:$/)
78 elsif ($line =~ /^Depends-on:$/)
80 $state = ST_DEPENDENTS;
94 if ($state eq ST_FILES)
98 elsif ($state eq ST_DEPENDENTS)
106 # my @t = sort keys %file_set;
107 # print "files: @t\n";
108 # my @u = sort keys %dep_set;
109 # print "dependents: @u\n";
111 return (\%file_set, \%dep_set);
114 # Extract the set of files required for this module, including
115 # those required via dependent modules.
127 my ($exit_code) = @_;
128 my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
131 print $STREAM "Try `$ME --help' for more information.\n";
136 Usage: $ME [OPTIONS] FILE...
138 Read a module description file and derive the set of files
139 included directly by any .c or .h file listed in the `Files:' section.
140 Take the union of all such sets for any dependent modules.
141 Then, compare that set with the set derived from the names
142 listed in the various Files: sections.
146 --help display this help and exit
147 --version output version information and exit
154 sub find_included_lib_files ($)
159 my %special_non_dup = ( 'fnmatch_loop.c' => 1, 'regex.c' => 1 );
163 or die "$ME: can't open `$file' for reading: $!\n";
165 while (defined (my $line = <FH>))
167 # Ignore test-driver code at end of file.
168 $line =~ m!^\#if(def)? TEST_!
171 $line =~ m!^\s*\#\s*include\s+"!
176 exists $inc{$line} && ! exists $special_non_dup{$line}
177 and warn "$ME: $file: duplicate inclusion of $line\n";
188 # Exempt headers like unlocked-io.h that are `#include'd
189 # but not necessarily used.
190 'unlocked-io.h' => 1,
192 # Give gettext.h a free pass only when included from lib/error.c,
193 # since we've made that exception solely to make the error
194 # module easier to use -- at RMS's request.
195 'lib/error.c:gettext.h' => 1,
197 # The full-read module shares code with the full-write module.
198 'lib/full-write.c:full-read.h' => 1,
200 # The safe-write module shares code with the safe-read module.
201 'lib/safe-read.c:safe-write.h' => 1,
203 # The use of obstack.h in the hash module is conditional, off by default.
204 'lib/hash.c:obstack.h' => 1,
206 # The fts-lgpl module doesn't actually use fts-cycle.c and unistd-safer.h.
207 'lib/fts.c:fts-cycle.c' => 1,
208 'lib/fts.c:unistd-safer.h' => 1,
216 my %module_all_files;
224 exists $seen_module{$m}
226 $seen_module{$m} = 1;
227 my ($file, $dep) = parse_module_file $m;
229 foreach my $f (keys %$file)
231 $module_all_files{$f} = 1;
235 my @t = sort keys %module_all_files;
236 # warn "ALL files: @t\n";
238 # Derive from %module_all_files (by parsing the .c and .h files therein),
239 # the list of all #include'd files that reside in lib/.
240 foreach my $f (keys %module_all_files)
244 # FIXME: this is too naive
245 my $inc = find_included_lib_files "../$f";
246 foreach my $i (sort keys %$inc)
248 my $lib_file = "lib/$i";
249 exists $exempt_header{"$f:$i"}
250 || exists $exempt_header{$i}
252 !exists $module_all_files{$lib_file} && -f "../lib/$i"
253 and warn "$f: $i is `#include'd, but not "
254 . "listed in module's Files: section\n";
256 #my @t = sort keys %$inc;
257 #print "** $f: @t\n";
264 help => sub { usage 0 },
265 version => sub { print "$ME version $VERSION\n$COPYRIGHT_NOTICE"; exit },
269 and (warn "$ME: missing FILE argument\n"), usage 1;
271 foreach my $module (@ARGV)
273 check_module $module;