for my $extra (keys(%extras)) {
next unless $extras{$extra} =~ m/enabled/; # only process enabled extras.
my $abs_extra = File::Spec->catfile($abs_srcdir, "extra", $extra);
for my $extra (keys(%extras)) {
next unless $extras{$extra} =~ m/enabled/; # only process enabled extras.
my $abs_extra = File::Spec->catfile($abs_srcdir, "extra", $extra);