diff --git a/Makefile.incl.in b/Makefile.incl.in
index 7f6b30d..bb9d249 100644
--- a/Makefile.incl.in
+++ b/Makefile.incl.in
@@ -619,7 +619,7 @@
   ALLLIBS = ${LIBS} -L/usr/lib -L/usr/local/lib
   SHLIBSUFFIX=.dylib
   CC1 = ${CXX} $(CPPFLAGS) $(CXXFLAGS) $(PLATFORM_COMPILE_OPTIONS)
-  CC4 = ${CC} $(CXXFLAGS) $(PLATFORM_COMPILE_OPTIONS)
+  CC4 = ${CC} $(CPPFLAGS) $(CFLAGS) $(PLATFORM_COMPILE_OPTIONS)
   LIB = $(LIB_NAME).$(LIB_MAJOR_VER).$(LIB_MINOR_VER)$(SHLIBSUFFIX)
   SO_NAME = $(LIB_NAME).$(LIB_MAJOR_VER)$(SHLIBSUFFIX)
   MAKE_SHARED = ${CXX} $(CXXFLAGS) -D${PLATFORM} -dynamiclib -prebind -seg1addr 0x38000000  -compatibility_version 1 -current_version $(LIB_MAJOR_DOT_VER) -install_name ${PREFIX}/lib/${LINK_NAME} ${LDFLAGS}
diff --git a/samples/Makefile.in b/samples/Makefile.in
index 6ad73e4..d81803d 100644
--- a/samples/Makefile.in
+++ b/samples/Makefile.in
@@ -178,7 +178,7 @@
 
 $(XSL_BIN_DIR)/SimpleXPathCAPI: $(XSL_OBJ_DIR)/SimpleXPathCAPI.o
 	$(LINK) $(XSL_BUILD_OPTIONS) $(PLATFORM_LIB_LINK_OPTIONS)  \
-	${EXTRA_LINK_OPTIONS} $^ $(XALAN_LIB) $(ALLLIBS) $(CXXFLAGS) -o $@  \
+	${EXTRA_LINK_OPTIONS} $^ $(XALAN_LIB) $(ALLLIBS) $(CFLAGS) -o $@  \
 	$(OTHER_LINK_PARAMETERS)
 
 $(XSL_OBJ_DIR)/%.o:$(SAMPLES_DIR)/SimpleXPathCAPI/%.c