$OpenBSD$
--- Makefile.ocamlmakefile.orig	Sun Mar 29 19:31:41 2015
+++ Makefile.ocamlmakefile	Sun Mar 29 19:32:00 2015
@@ -196,6 +196,8 @@ SOURCES = \
 
 PACKS = str findlib yojson unix
 
+-include Makefile.config
+
 ifeq "$(NATIVE)" "false"
 ocamlmerlin $(RESULT): byte-code
 else
