> On Jan 8, 2015, at 12:49 PM, NGie Cooper <yaneurab...@gmail.com> wrote: > > On Thu, Jan 8, 2015 at 10:28 AM, Warner Losh <i...@freebsd.org> wrote: >> Author: imp >> Date: Thu Jan 8 18:28:06 2015 >> New Revision: 276846 >> URL: https://svnweb.freebsd.org/changeset/base/276846 >> >> Log: >> Add infrastructure to build dtb files from dts files. > > ... > >> Added: head/share/mk/bsd.dtb.mk >> ============================================================================== >> --- /dev/null 00:00:00 1970 (empty, because file is newly added) >> +++ head/share/mk/bsd.dtb.mk Thu Jan 8 18:28:06 2015 (r276846) >> @@ -0,0 +1,17 @@ >> +# $FreeBSD$ >> + >> +# Search for kernel source tree in standard places. >> +.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. \ >> + ${.CURDIR}/../../../../.. /sys /usr/src/sys >> +.if !defined(SYSDIR) && exists(${_dir}/kern/) && >> exists(${_dir}/conf/kmod.mk) >> +SYSDIR= ${_dir} >> +.endif >> +.endfor >> +.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) || \ >> + !exists(${SYSDIR}/conf/kmod.mk) >> +.error Unable to locate the kernel source tree. Set SYSDIR to override. >> +.endif >> + >> +.include "${SYSDIR}/conf/dtb.mk" >> + >> +.include <bsd.sys.mk> > > ... > >> +# Search for kernel source tree in standard places. >> +.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys >> +.if !defined(SYSDIR) && exists(${_dir}/kern/) >> +SYSDIR= ${_dir} >> +.endif >> +.endfor >> +.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) >> +.error "can't find kernel source tree" >> +.endif > > Why is ${SYSDIR} being checked for in bsd.dtb.mk and dtb.mk?
SYSDIR may not exist if dtb.mk was included directly. Warner
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