$NetBSD$

--- src/arch/netbsd/mcontext/Makefile.orig	2017-11-02 06:34:51.949371629 +0000
+++ src/arch/netbsd/mcontext/Makefile
@@ -0,0 +1,9 @@
+top_builddir=../../../..
+include $(top_builddir)/Makefile.conf
+
+CFILES = context.c
+SFILES = asm.S
+
+all:  lib
+
+include $(REALTOPDIR)/src/Makefile.common