diff -r d3af3efce68c -r a797ad9c7bd5 scripts/build/libc/glibc.sh
--- a/scripts/build/libc/glibc.sh	Thu Nov 11 00:29:53 2010 +0100
+++ b/scripts/build/libc/glibc.sh	Thu Nov 11 01:11:17 2010 +0100
@@ -373,6 +373,10 @@
         extra_config+=("--disable-versioning")
     fi
 
+    if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
+        extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
+    fi
+
     case "$(do_libc_add_ons_list ,)" in
         "") ;;
         *)  extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;