--- a/Makefile	2010-10-10 17:16:16.289144951 +0200
+++ b/Makefile	2010-10-10 17:16:32.057909483 +0200
@@ -19,7 +19,7 @@
 endif
 
 CFLAGS := -D_BSD_SOURCE -I$(CURDIR)/include/ \
-	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS)
+	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS) $(CPPFLAGS)
 ifneq ($(GCCVER),2)
   CFLAGS := $(CFLAGS) -std=c99
 else