--- a/Makefile.in
+++ b/Makefile.in
@@ -43,6 +43,7 @@ CODESIGN_IDENTITY =	Developer ID
 CPPFLAGS	=	@CPPFLAGS@
 CSFLAGS		=	-s "$(CODESIGN_IDENTITY)" --timestamp @CSFLAGS@
 CXXFLAGS	=	$(ARCHFLAGS) @CXXFLAGS@ $(OPTIM)
+CPPFLAGS	=	@CPPFLAGS@
 GUILIBS		=	@GUILIBS@
 LDFLAGS		=	$(ARCHFLAGS) @LDFLAGS@ $(OPTIM)
 LIBS		=	@LIBS@
