build: ensure that reordering of KCONFIG lines are handled properly and that the final result does not depend on the package scan order

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32788 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 4 insertions, 1 deletions

diff --git a/scripts/kconfig.pl b/scripts/kconfig.pl
index 811327353..b91cdf397 100755
--- a/scripts/kconfig.pl
+++ b/scripts/kconfig.pl
@@ -73,7 +73,10 @@ sub config_add($$$) {
 		my %cfg = %$_;
 		
 		foreach my $config (keys %cfg) {
-			next if $mod_plus and $config{$config} and $config{$config} eq "y";
+			if ($mod_plus and $config{$config}) {
+				next if $config{$config} eq "y";
+				next if $cfg{$config} eq '#undef';
+			}
 			$config{$config} = $cfg{$config};
 		}
 	}