Force rebuild of symlinked modules when the source file changes

[user/henk/code/inspircd.git] / make / calcdep.pl

diff --git a/make/calcdep.pl b/make/calcdep.pl
index 92d2cc3e07a6622af67a34bc351b16d4ec903c7b..a4bb7f4d6e44c7738eb6fff80158cca51def9227 100755 (executable)
--- a/make/calcdep.pl
+++ b/make/calcdep.pl
@@ -1,10 +1,7 @@
 #!/usr/bin/perl
 use strict;
 use warnings;
-
-# This used to be a wrapper around cc -M; however, this is a very slow
-# operation and we don't conditionally include our own files often enough
-# to justify the full preprocesor invocation for all ~200 files.
+use Getopt::Long;
 
 my %f2dep;
 
@@ -15,15 +12,28 @@ sub gendep {
        return $f2dep{$f} if exists $f2dep{$f};
        $f2dep{$f} = '';
        my %dep;
-       open my $in, '<', $f;
+       my $link = readlink $f;
+       if (defined $link) {
+               $link = "$basedir/$link" unless $link =~ m#^/#;
+               $dep{$link}++;
+       }
+       open my $in, '<', $f or die "Could not read $f";
        while (<$in>) {
                if (/^\s*#\s*include\s*"([^"]+)"/) {
                        my $inc = $1;
+                       next if $inc eq 'inspircd_version.h' && $f eq '../include/inspircd.h';
+                       my $found = 0;
                        for my $loc ("$basedir/$inc", "../include/$inc") {
                                next unless -e $loc;
+                               $found++;
                                $dep{$loc}++;
                                $dep{$_}++ for split / /, gendep $loc;
                        }
+                       if ($found == 0 && $inc ne 'inspircd_win32wrapper.h') {
+                               print STDERR "WARNING: could not find header $inc for $f\n";
+                       } elsif ($found > 1 && $basedir ne '../include') {
+                               print STDERR "WARNING: ambiguous include $inc in $f\n";
+                       }
                }
        }
        close $in;
@@ -31,10 +41,10 @@ sub gendep {
        $f2dep{$f};
 }
 
-for my $file (@ARGV) {
-       next unless $file =~ /cpp$/;
+sub dep_cpp {
+       my $file = shift;
        gendep $file;
-       my($path,$base) = $file =~ m#^((?:.*/)?)([^/]+)\.cpp#;
+       my($path,$base) = $file =~ m#^((?:.*/)?)([^/]+)\.cpp# or die "Bad file $file";
        my $cmd = "$path.$base.d";
        my $ext = $path eq 'modules/' || $path eq 'commands/' ? '.so' : '.o';
        my $out = "$path$base$ext";
@@ -43,5 +53,62 @@ for my $file (@ARGV) {
        print OUT "$out: $file $f2dep{$file}\n";
        print OUT "\t@../make/unit-cc.pl \$(VERBOSE) $file $out\n";
        print OUT "$cmd: $file $f2dep{$file}\n";
-       print OUT "\t../make/calcdep.pl $file\n";
+       print OUT "\t../make/calcdep.pl -file $file\n";
+}
+
+sub dep_dir {
+       my $dir = shift;
+       if ($dir =~ m#^(.*?)([^/]+)/?$#) {
+               my($path,$base) = ($1,$2);
+               my $cmd = "$path.$base.d";
+               my $out = "$path$base.so";
+               opendir DIR, $dir;
+               my $ofiles = join ' ', grep s/(.*)\.cpp$/$path$base\/$1.o/, readdir DIR;
+               closedir DIR;
+               open OUT, '>', $cmd;
+               print OUT "$out: $ofiles\n\t".'$(RUNCC) $(PICLDFLAGS) -o $@ '
+                       .$ofiles."\n";
+               print OUT "$cmd: $dir\n\t".'@../make/calcdep.pl -file '."$path$base\n";
+       } else {
+               print STDERR "Cannot generate depencency for $dir\n";
+               exit 1;
+       }
+}
+
+my($all,$quiet, $file);
+GetOptions(
+       'all' => \$all,
+       'quiet' => \$quiet,
+       'file=s' => \$file,
+);
+
+if (!$all && !defined $file) {
+       print "Use: $0 {-all|-file filename} [-quiet]\n";
+       exit 1;
+}
+
+if (defined $file) {
+       if (-f $file) {
+               dep_cpp $file;
+       } elsif (-d $file) {
+               dep_dir $file;
+       } else {
+               print STDERR "Can't generate dependencies for $file\n";
+               exit 1;
+       }
+} else {
+       my @files = (<*.cpp>, <commands/*.cpp>, <modes/*.cpp>, <modules/*.cpp>, <modules/m_*/*.cpp>);
+       push @files, "socketengines/$ENV{SOCKETENGINE}.cpp", "threadengines/threadengine_pthread.cpp";
+       for my $file (@files) {
+               dep_cpp $file;
+       }
+
+       my @dirs = grep -d, <modules/m_*>;
+       for my $dir (@dirs) {
+               dep_dir $dir;
+       }
+
+       s#([^/]+)\.cpp#.$1.d# for @files;
+       s#([^/]+)/?$#.$1.d# for @dirs;
+       print join ' ', @files, @dirs;
 }