1# $FreeBSD$ 2 3# Search for kernel source tree in standard places. 4.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. \ 5 ${.CURDIR}/../../../../.. /sys /usr/src/sys 6.if !defined(SYSDIR) && exists(${_dir}/kern/) && exists(${_dir}/conf/kmod.mk) 7SYSDIR= ${_dir} 8.endif 9.endfor 10.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) || \ 11 !exists(${SYSDIR}/conf/kmod.mk) 12.error Unable to locate the kernel source tree. Set SYSDIR to override. 13.endif 14 15.include "${SYSDIR}/conf/dtb.mk" 16 17.include <bsd.sys.mk> 18