Add mk and h files needed for cross compilation

share/mk/bsd.kernobj.mk

@@ -0,0 +1,26 @@
+#	$NetBSD: bsd.kernobj.mk,v 1.13 2010/01/25 00:43:00 christos Exp $
+
+# KERNSRCDIR	Is the location of the top of the kernel src.
+# 		It defaults to `${NETBSDSRCDIR}/sys'.
+#
+# KERNARCHDIR	Is the location of the machine dependent kernel sources.
+#		It defaults to `arch/${MACHINE}', but may be overridden
+#		in case ${MACHINE} is not correct.
+#
+# KERNCONFDIR	Is where the configuration files for kernels are found.
+#		It defaults to `${KERNSRCDIR}/${KERNARCHDIR}/conf'.
+#
+# KERNOBJDIR	Is the kernel build directory.  The kernel GENERIC for
+# 		instance will be compiled in ${KERNOBJDIR}/GENERIC.
+# 		The default is the .OBJDIR of
+#		`${KERNSRCDIR}/${KERNARCHDIR}/compile'.
+#
+
+.include <bsd.own.mk>
+
+KERNSRCDIR?=	${NETBSDSRCDIR}/sys
+KERNARCHDIR?=	arch/${MACHINE}
+KERNCONFDIR?=	${KERNSRCDIR}/${KERNARCHDIR}/conf
+.if !defined(KERNOBJDIR) && exists(${KERNSRCDIR}/${KERNARCHDIR}/compile)
+KERNOBJDIR!=	cd "${KERNSRCDIR}/${KERNARCHDIR}/compile" && ${PRINTOBJDIR}
+.endif