freebsd-dev/share/mk/bsd.kmod.mk
Bryan Drewery 4f6de62991 Use known SRCTOP if possible to determine SYSDIR.
Suggested by:	sjg
Sponsored by:	Dell EMC
2018-04-12 20:48:17 +00:00

21 lines
594 B
Makefile

# $FreeBSD$
# Search for kernel source tree in standard places.
.if empty(KERNBUILDDIR)
.if !defined(SYSDIR)
.for _dir in ${SRCTOP:D${SRCTOP}/sys} \
${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. \
${.CURDIR}/../../../../.. /sys /usr/src/sys
.if !defined(SYSDIR) && exists(${_dir}/kern/) && exists(${_dir}/conf/kmod.mk)
SYSDIR= ${_dir:tA}
.endif
.endfor
.endif
.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) || \
!exists(${SYSDIR}/conf/kmod.mk)
.error Unable to locate the kernel source tree. Set SYSDIR to override.
.endif
.endif
.include "${SYSDIR}/conf/kmod.mk"