3 # Script to create Makefile-style dependencies.
5 # Usage: perl mkdep.pl [-s path-separator] [-o obj-ext] dir... > deps
12 $barrier = "#-- Everything below is generated by mkdep.pl - do not edit --#\n";
15 # Scan files for dependencies
23 sysopen(FILE, $file, O_RDONLY)
24 or return; # If not openable, assume generated
26 while ( defined($line = <FILE>) ) {
28 $line =~ s:/\*.*\*/::g;
30 if ( $line =~ /^\s*\#\s*include\s+\"(.*)\"\s*$/ ) {
33 push(@xdeps, $nf) unless ( defined($deps{$nf}) );
37 $deps{$file} = [@mdeps];
39 foreach $file ( @xdeps ) {
44 # %deps contains direct dependencies. This subroutine resolves
45 # indirect dependencies that result.
51 foreach $dep ( @{$deps{$file}} ) {
53 foreach $idep ( alldeps($dep) ) {
60 # This converts a filename from host syntax to target syntax
61 # This almost certainly works only on relative filenames...
62 sub convert_file($$) {
64 my(@fspec) = (basename($file));
65 while ( ($file = dirname($file)) ne File::Spec->curdir() &&
66 $file ne File::Spec->rootdir() ) {
67 unshift(@fspec, basename($file));
71 # This means kill path completely. Used with Makes who do
72 # path searches, but doesn't handle output files in subdirectories,
73 # like OpenWatcom WMAKE.
74 return $fspec[scalar(@fspec)-1];
76 return join($sep, @fspec);
81 # Insert dependencies into a Makefile
85 $nexttemp++; # Unique serial number for each temp file
86 my($tmp) = File::Spec->catfile(dirname($file), 'tmp.'.$nexttemp);
88 sysopen(IN, $file, O_RDONLY)
89 or die "$0: Cannot open input: $file\n";
90 sysopen(OUT, $tmp, O_WRONLY|O_CREAT|O_TRUNC, 0666)
91 or die "$0: Cannot open output: $tmp\n";
94 my($obj) = '.o'; # Defaults
96 my($maxline) = 78; # Seems like a reasonable default
98 while ( defined($line = <IN>) ) {
99 if ( $line =~ /^\s*\#\s*@([a-z0-9-]+):\s*\"([^\"]*)\"/ ) {
100 $parm = $1; $val = $2;
101 if ( $parm eq 'object-ending' ) {
103 } elsif ( $parm eq 'path-separator' ) {
105 } elsif ( $parm eq 'line-width' ) {
108 } elsif ( $line eq $barrier ) {
109 last; # Stop reading input at barrier line
115 my $dfile, $ofile, $str, $sl, $len;
120 foreach $dfile ( sort(keys(%deps)) ) {
121 if ( $dfile =~ /\.[Cc]$/ ) {
122 $ofile = $dfile; $ofile =~ s/\.[Cc]$//;
123 $str = convert_file($ofile,$sep).$obj.':';
126 foreach $dep ($dfile, alldeps($dfile)) {
127 $str = convert_file($dep,$sep);
128 $sl = length($str)+1;
129 if ( $len+$sl > $maxline-2 ) {
130 print OUT " \\\n ", $str;
142 (unlink($file) && rename($tmp, $file))
143 or die "$0: Failed to change $tmp -> $file\n";
155 while ( defined($arg = shift(@ARGV)) ) {
156 if ( $arg eq '-m' ) {
158 push(@mkfiles, $arg);
159 } elsif ( $arg eq '-M' ) {
160 $mkmode = 1; # Futher filenames are output Makefile names
161 } elsif ( $arg eq '--' && $mkmode ) {
163 } elsif ( $arg =~ /^-/ ) {
164 die "Unknown option: $arg\n";
167 push(@mkfiles, $arg);
174 foreach $dir ( @files ) {
175 opendir(DIR, $dir) or die "$0: Cannot open directory: $dir";
177 while ( $file = readdir(DIR) ) {
178 $path = ($dir eq File::Spec->curdir())
179 ? $file : File::Spec->catfile($dir,$file);
180 if ( $file =~ /\.[Cc]$/ ) {
187 foreach $mkfile ( @mkfiles ) {
188 insert_deps($mkfile);