diff --git a/GNUmakefile b/GNUmakefile
index 28aea719..17dc2f79 100755
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -154,13 +154,13 @@ CXXFLAGS += -DCRYPTOPP_DISABLE_ASM
 endif
 endif
 
-ifeq ($(GCC_COMPILER)$(GAS210_OR_LATER),10)	# .intel_syntax wasn't supported until GNU assembler 2.10
+ifeq ($(GCC_COMPILER)$(MACPORTS_COMPILER)$(GAS210_OR_LATER),100)	# .intel_syntax wasn't supported until GNU assembler 2.10
 CXXFLAGS += -DCRYPTOPP_DISABLE_ASM
 else
-ifeq ($(GCC_COMPILER)$(GAS217_OR_LATER),10)
+ifeq ($(GCC_COMPILER)$(MACPORTS_COMPILER)$(GAS217_OR_LATER),100)
 CXXFLAGS += -DCRYPTOPP_DISABLE_SSSE3
 else
-ifeq ($(GCC_COMPILER)$(GAS219_OR_LATER),10)
+ifeq ($(GCC_COMPILER)$(MACPORTS_COMPILER)$(GAS219_OR_LATER),100)
 CXXFLAGS += -DCRYPTOPP_DISABLE_AESNI
 endif
 endif