--- a/Makefile	2010-10-10 17:41:56.469136747 +0200
+++ b/Makefile	2010-10-10 17:42:11.929143955 +0200
@@ -19,7 +19,7 @@
   WARNFLAGS := $(WARNFLAGS) -Werror
 endif
 CFLAGS := -D_BSD_SOURCE -I$(CURDIR)/include/ \
-	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS)
+	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS) $(CPPFLAGS)
 ifneq ($(GCCVER),2)
   CFLAGS := $(CFLAGS) -std=c99
 else