$NetBSD: patch-Makefile,v 1.2 2017/09/08 11:51:36 jaapb Exp $

Use MAKE_JOBS rather than default number
--- Makefile.orig	2017-08-18 23:51:31.000000000 +0000
+++ Makefile
@@ -2,10 +2,10 @@ INSTALL_ARGS := $(if $(PREFIX),--prefix 
 BIN := ./_build/default/bin/main.exe
 
 default: boot.exe
-	./boot.exe -j 4 --dev
+	./boot.exe -j ${MAKE_JOBS} --dev
 
 release: boot.exe
-	./boot.exe -j 4
+	./boot.exe -j ${MAKE_JOBS}
 
 boot.exe: bootstrap.ml
 	ocaml bootstrap.ml
