--- a/Makefile	2010-10-10 05:26:39.439706253 +0200
+++ b/Makefile	2010-10-10 05:27:16.699713741 +0200
@@ -16,7 +16,7 @@
 	-Wmissing-declarations -Wnested-externs -Werror -pedantic \
 	-Wno-overlength-strings # For nsglobe.c
 CFLAGS := -g -std=c99 -D_BSD_SOURCE -I$(CURDIR)/include/ \
-	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS)
+	-I$(CURDIR)/src $(WARNFLAGS) $(CFLAGS) $(CPPFLAGS)
 
 # TODO: probably want to retrieve SDL from pkg-config
 TESTLDFLAGS = -Wl,--whole-archive -l$(COMPONENT) -Wl,--no-whole-archive -lSDL -lxcb-icccm -lxcb -lxcb-image -lxcb-keysyms