#!@PERL@ -w
# By Greg J. Badros -- 17-July-1998
# Use w/ AT&T's graphviz (aka "dot") package

use strict;
# grab all the source files
my @files = <*.[ch]>;
*OUT=*STDOUT;
print OUT <<END
digraph G {
  page = "8.5,11";
  orientation = "landscape";
  ratio = "auto";
/*  concentrate = "true"; merge edges */
END
  ;

foreach my $file (@files) {
  open(IN,"<$file") or die "Cannot open $file: $!";
  print_incl_deps_for($file,\*IN);
}
print OUT "}\n";

sub print_incl_deps_for {
  my ($filename,$fh) = @_;
  while (<$fh>) {
    if (/^\s*\#\s*include\s*["<](.*?)[">]/) {
      # ignore .x files
      next if ($1 =~ /\.x$/);
      print OUT "\"$filename\" -> \"$1\";\n";
    }
  }
}