+GCC_VERSION := $(call cc-version)
+ifneq ($(shell if [ -z $(GCC_VERSION) ] ; then echo "bad"; fi ;),)
+$(error Sorry, couldn't find ($(cc-version)).)
+endif
+ifneq ($(shell if [ $(GCC_VERSION) -lt 0303 ] ; then echo "bad"; fi ;),)
+$(error Sorry, your compiler is too old ($(GCC_VERSION)). GCC v3.3 or above is required.)
+endif
+