$NetBSD: patch-Makefile,v 1.1 2016/06/25 14:47:54 jaapb Exp $

Install in correct location
--- Makefile.orig	2016-03-22 14:13:51.000000000 +0000
+++ Makefile
@@ -2,7 +2,7 @@
 
 SETUP := setup.exe
 NAME := ppx_optcomp
-PREFIX = $(shell grep ^prefix= setup.data | cut -d\" -f 2)
+#PREFIX = $(shell grep ^prefix= setup.data | cut -d\" -f 2)
 
 # Default rule
 default: build
@@ -30,7 +30,7 @@ $(NAME).install: js-utils/gen_install.ml
 	ocaml -I js-utils js-utils/gen_install.ml
 
 install: $(NAME).install
-	opam-installer -i --prefix $(PREFIX) $(NAME).install
+	opam-installer -i --prefix ${DESTDIR}$(PREFIX) --libdir ${OCAML_SITELIBDIR}  $(NAME).install
 
 uninstall: $(NAME).install
 	opam-installer -u --prefix $(PREFIX) $(NAME).install