- pass configure args for the -target compiler

toolchain/gcc/gcc-uclibc-4.x.mk

@@ -393,6 +393,7 @@ $(GCC_BUILD_DIR3)/.prepared: $(GCC_BUILD_DIR2)/.libs_installed $(GCC_TARGET_PRER
 $(GCC_BUILD_DIR3)/.configured: $(GCC_BUILD_DIR3)/.prepared
 	(cd $(GCC_BUILD_DIR3); rm -rf config.cache; \
 		$(TARGET_CONFIGURE_OPTS) \
+		$(TARGET_CONFIGURE_ARGS) \
 		$(TARGET_GCC_FLAGS) \
 		$(GCC_SRC_DIR)/configure \
 		--prefix=/usr \