diff --git a/share/mk/Makefile b/share/mk/Makefile
index 45885a34c885..e8a0d93b7c7d 100644
--- a/share/mk/Makefile
+++ b/share/mk/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.27 1999/09/14 01:31:11 perry Exp $
+#	$NetBSD: Makefile,v 1.28 2000/05/02 03:43:15 sjg Exp $
 #	@(#)Makefile	8.1 (Berkeley) 6/8/93
 
 .include <bsd.own.mk>
@@ -6,7 +6,7 @@
 .if ${MKSHARE} != "no"
 FILES=	bsd.README bsd.crypto.mk bsd.doc.mk bsd.dep.mk \
 	bsd.depall.mk bsd.files.mk bsd.hostprog.mk \
-	bsd.inc.mk bsd.info.mk bsd.kinc.mk bsd.kmod.mk \
+	bsd.inc.mk bsd.info.mk bsd.kernobj.mk bsd.kinc.mk bsd.kmod.mk \
 	bsd.lib.mk bsd.links.mk bsd.man.mk bsd.nls.mk \
 	bsd.obj.mk bsd.own.mk bsd.prog.mk \
 	bsd.subdir.mk bsd.sys.mk sys.mk
diff --git a/share/mk/bsd.kernobj.mk b/share/mk/bsd.kernobj.mk
new file mode 100644
index 000000000000..ac139bef327c
--- /dev/null
+++ b/share/mk/bsd.kernobj.mk
@@ -0,0 +1,26 @@
+#	$NetBSD: bsd.kernobj.mk,v 1.1 2000/05/02 03:43:15 sjg Exp $
+
+#   KERNSRCDIR points to kernel source; it is set by default to ../sys,
+#	but can be overridden.
+#   KERNARCHDIR is the directory under kernel source that holds the md
+#	stuff.  Default is arch/${MACHINE}.
+#   KERNOBJDIR is the kernel build directory, it defaults to
+#	${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile/KERNELNAME
+#	if ${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
+#	exists otherwise it defaults to
+#	${KERNSRCDIR}/${KERNARCHDIR}/compile/KERNELNAME, but can be
+#	overridden.  Or
+#   KERNCONFDIR is where the configuration files for kernels are found;
+#	default is ${KERNSRCDIR}/${KERNARCHDIR}/conf but can be overridden.
+
+# we need a top level Makefile.inc to set BSDSRCDIR
+KERNSRCDIR?=	${BSDSRCDIR}/sys
+# just incase ${MACHINE} is not always correct
+KERNARCHDIR?=	arch/${MACHINE}
+
+.if exists(${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile)
+KERNOBJDIR?=	${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
+.else
+KERNOBJDIR?=	${KERNSRCDIR}/${KERNARCHDIR}/compile
+.endif
+KERNCONFDIR?=	${KERNSRCDIR}/${KERNARCHDIR}/conf