--- Makefile.orig	2004-05-04 18:51:56.042411000 +0200
+++ Makefile	2004-05-04 18:52:19.623826080 +0200
@@ -36,6 +36,7 @@
 
 install: all
 	mkdir -p $(INSTALL_PREFIX)/usr/lib
+	mkdir -p $(INSTALL_PREFIX)/usr/include
 	install -m 644 libzap.a $(INSTALL_PREFIX)/usr/lib
 	install -m 644 zap.h $(INSTALL_PREFIX)/usr/include
 	install -m 755 libzap.so.1 $(INSTALL_PREFIX)/usr/lib