freebsd-nq/tools/build/options/WITHOUT_UNIFIED_OBJDIR
Bryan Drewery dfa099890c Add option UNIFIED_OBJDIR, on by default, which moves the default build OBJDIR.
This changes the build OBJDIR from the older style of /usr/obj/<srcdir> for
native builds, and /usr/obj/<target>.<target_arch>/<srcdir> for cross builds to
a new simpler format of /usr/obj/<srcdir>/<target>.<target_arch>.  This
new format is used regardless of cross or native build.  It allows
easier management of multiple source tree object directories.

The UNIFIED_OBJDIR option will be removed and its feature made permanent
for the 12.0 release.

Relnotes:	yes (don't note UNIFIED_OBJDIR option since it will be removed)
Prior work:	D3711 D874
Reviewed by:	gjb, sjg
Discussed at:	https://lists.freebsd.org/pipermail/freebsd-arch/2016-May/017805.html
Discussed with:	emaste
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12840
2017-11-01 21:22:05 +00:00

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.\" $FreeBSD$
Set to use the historical object directory format for
.Xr build 7
targets.
For native-builds and builds done directly in sub-directories the format of
.Pa ${MAKEOBJDIRPREFIX}/${.CURDIR}
is used,
while for cross-builds
.Pa ${MAKEOBJDIRPREFIX}/${TARGET}.${TARGET_ARCH}/${.CURDIR}
is used.
.Pp
This option is transitional and will be removed before the 12.0 release,
at which time
.va WITH_UNIFIED_OBJDIR
will be enabled permanently.