Index: src/Makefile
==================================================================
--- src/Makefile
+++ src/Makefile
@@ -44,8 +44,8 @@
 	${OBJC_PROPERTIES_M}	\
 	${OBJC_SYNC_M}
 
 include ../buildsys.mk
 
-CPPFLAGS += -I..
+CPPFLAGS += -I.. ${LIB_CPPFLAGS}
 OBJCFLAGS += ${LIB_CFLAGS}
 LD = ${OBJC}