--- cryptopp-5.6.2/GNUmakefile.orig	2014-03-16 23:04:04.185871759 +0100
+++ cryptopp-5.6.2/GNUmakefile	2014-03-16 23:30:49.726841806 +0100
@@ -38,8 +38,6 @@
 ifneq ($(GCC42_OR_LATER),0)
 ifeq ($(UNAME),Darwin)
 CXXFLAGS += -arch x86_64 -arch i386
-else
-CXXFLAGS += -march=native
 endif
 endif