+# Copy all Makefile.in to Makefile (except top-level)
+use File::Find;
+use IO::File;
+find(sub {
+ return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
+ my $in = IO::File->new($_, "r") or
+ die sprintf "Error reading Makefile.in in %s: !$\n",
+ $File::Find::dir;
+ my $out = IO::File->new("Makefile", "w") or
+ die sprintf "Error writing Makefile in %s: !$\n",
+ $File::Find::dir;
+ print $out "# Generated from $_, do not edit\n";
+ while (my $line = <$in>) { print $out $line }
+ $in->close() or
+ die sprintf "Error reading Makefile.in in %s: !$\n",
+ $File::Find::dir;
+ $out->close() or
+ die sprintf "Error writing Makefile in %s: !$\n",
+ $File::Find::dir;
+ }, ".");
+