Resurrected Darwin patch for ocaml

ocaml/Makefile

@@ -99,6 +99,16 @@ REPLACE_AWK+=		tools/ocaml-instr-report
 do-test:
 	cd ${WRKSRC}/testsuite && ${MAKE_PROGRAM} all
 
+.if ${OPSYS} == "Darwin"
+.PHONY: fix-darwin-install-name
+post-install: fix-darwin-install-name
+fix-darwin-install-name:
+	for f in ${DESTDIR}${PREFIX}/lib/ocaml/*.so \
+		${DESTDIR}${PREFIX}/lib/ocaml/stublibs/*.so; do \
+		install_name_tool -id `${ECHO} $$f | ${SED} -e 's,${DESTDIR},,g'` $$f; \
+	done
+.endif
+
 #post-install:
 #	set -e ; cd ${DESTDIR}${PREFIX}/lib/ocaml/${PKGMANDIR}/man1;	\
 #	for m in *; do							\