diff -r e27d2bd82790 -r a1370757e6a1 scripts/build/debug/300-gdb.sh
--- a/scripts/build/debug/300-gdb.sh	Thu Jan 21 22:45:09 2010 +0100
+++ b/scripts/build/debug/300-gdb.sh	Wed Feb 17 23:47:47 2010 +0100
@@ -99,9 +99,8 @@
         cd "${CT_BUILD_DIR}/build-gdb-cross"
 
         cross_extra_config=("${extra_config[@]}")
-        if [ "${CT_GMP_MPFR}" = "y" ]; then
-            cross_extra_config+=("--with-gmp=${CT_PREFIX_DIR}" "--with-mpfr=${CT_PREFIX_DIR}")
-        fi
+        [ -z "${CT_GMP}"    ] || cross_extra_config+=("--with-gmp=${CT_PREFIX_DIR}")
+        [ -z "${CT_MPFR}"   ] || cross_extra_config+=("--with-mpfr=${CT_PREFIX_DIR}")
         case "${CT_THREADS}" in
             none)   cross_extra_config+=("--disable-threads");;
             *)      cross_extra_config+=("--enable-threads");;