diff -r 096845dbd877 -r 48cefdec12eb scripts/build/libc/glibc-eglibc.sh-common
--- a/scripts/build/libc/glibc-eglibc.sh-common	Mon Nov 21 23:35:21 2011 +0100
+++ b/scripts/build/libc/glibc-eglibc.sh-common	Tue Dec 13 11:51:07 2011 +0100
@@ -67,9 +67,9 @@
 
 # Usage: do_libc_backend param=value [...]
 #   Parameter           : Definition                            : Type      : Default
-#   libc_mode           : 'startfiles' or 'final'               : string    : final
+#   libc_mode           : 'startfiles' or 'final'               : string    : (none)
 do_libc_backend() {
-    local libc_mode=final
+    local libc_mode
     local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
     local extra_cc_args
     local -a extra_config
@@ -81,11 +81,11 @@
         shift
     done
 
-    if [ "${libc_mode}" = "startfiles" ]; then
-        CT_DoStep INFO "Installing C library headers & start files"
-    else # libc_mode = final
-        CT_DoStep INFO "Installing C library"
-    fi
+    case "${libc_mode}" in
+        startfiles) CT_DoStep INFO "Installing C library headers & start files";;
+        final)      CT_DoStep INFO "Installing C library";;
+        *)          CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
+    esac
     mkdir -p "${CT_BUILD_DIR}/build-libc-${libc_mode}"
     cd "${CT_BUILD_DIR}/build-libc-${libc_mode}"