--- ./GNUmakefile.orig	2013-02-20 15:30:52.000000000 -0500
+++ ./GNUmakefile	2014-02-05 14:26:22.994957010 -0500
@@ -1,4 +1,4 @@
-CXXFLAGS = -DNDEBUG -g -O2
+#CXXFLAGS = -DNDEBUG -g -O2
 # -O3 fails to link on Cygwin GCC version 4.5.3
 # -fPIC is supported. Please report any breakage of -fPIC as a bug.
 # CXXFLAGS += -fPIC
@@ -38,8 +38,6 @@
 ifneq ($(GCC42_OR_LATER),0)
 ifeq ($(UNAME),Darwin)
 CXXFLAGS += -arch x86_64 -arch i386
-else
-CXXFLAGS += -march=native
 endif
 endif
 
@@ -165,7 +163,7 @@
 	$(RANLIB) $@
 
 libcryptopp.so: $(LIBOBJS)
-	$(CXX) -shared -o $@ $(LIBOBJS)
+	$(CXX) -shared -o $@ $(CXXFLAGS) $(LDFLAGS) $(LIBOBJS)
 
 cryptest.exe: libcryptopp.a $(TESTOBJS)
 	$(CXX) -o $@ $(CXXFLAGS) $(TESTOBJS) ./libcryptopp.a $(LDFLAGS) $(LDLIBS)