diff -r ec603d1371b9 -r eacd3115e674 scripts/build/libc/glibc.sh
--- a/scripts/build/libc/glibc.sh	Sat Nov 16 16:16:51 2013 +0100
+++ b/scripts/build/libc/glibc.sh	Mon Jan 06 20:05:14 2014 +0100
@@ -32,9 +32,9 @@
             nptl)   continue;;
         esac
 
-        case "${CT_LIBC_GLIBC_PORTS_EXTERNAL}" in
-            y)   ;;
-            *)   continue;;
+        case "${addon}:${CT_LIBC_GLIBC_PORTS_EXTERNAL}" in
+            ports:y)    ;;
+            ports:*)    continue;;
         esac
 
         if ! CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}"     \