$NetBSD: patch-Makefile,v 1.2 2013/06/11 14:52:40 jaapb Exp $

--- Makefile.orig	2012-12-07 15:15:22.000000000 +0000
+++ Makefile
@@ -52,19 +52,20 @@ files/META.tyxml: files/META.in Makefile
 	  $< > $@
 
 install:
+	mkdir -p ${INSTALLDIR}
 	$(OCAMLFIND) install ${PACKAGENAME} \
-	  -patch-version ${VERSION} \
+	  -patch-version ${VERSION} -destdir ${INSTALLDIR} \
 	  files/META ${INTF} ${IMPL} ${NATIMPL} \
 	  ${MLI_TO_INSTALL}
 
 install-byte:
 	$(OCAMLFIND) install ${PACKAGENAME} \
-	  -patch-version ${VERSION} \
+	  -patch-version ${VERSION} -destdir ${INSTALLDIR} \
 	  files/META ${INTF} ${IMPL} ${MLI_TO_INSTALL}
 
 install-opt:
 	$(OCAMLFIND) install ${PACKAGENAME} \
-	  -patch-version ${VERSION} \
+	  -patch-version ${VERSION} -destdir ${INSTALLDIR} \
 	  files/META ${INTF} ${NATIMPL} ${MLI_TO_INSTALL}
 
 uninstall: