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Modernize the MAKE_JUST_KERNELS hint in the top-level makefile.

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It doesn't make sense to limit to -j12 anymore, build scalability
is better than it used to be.  Fold the hint into the description
of the universe target.

Reviewed by:	imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D20342
This commit is contained in:
Mark Johnston 2019-05-24 15:45:43 +00:00
parent b7ebd3eff2
commit 707b2d6586
1 changed files with 2 additions and 7 deletions
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9
Makefile
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@ -4,7 +4,8 @@
# The user-driven targets are: # The user-driven targets are:
# #
# universe - *Really* build *everything* (buildworld and # universe - *Really* build *everything* (buildworld and
# all kernels on all architectures). # all kernels on all architectures). Define the
# MAKE_JUST_KERNELS variable to only build kernels.
# tinderbox - Same as universe, but presents a list of failed build # tinderbox - Same as universe, but presents a list of failed build
# targets and exits with an error if there were any. # targets and exits with an error if there were any.
# buildworld - Rebuild *everything*, including glue to help do # buildworld - Rebuild *everything*, including glue to help do
@ -45,12 +46,6 @@
# native-xtools-install # native-xtools-install
# - Install the files to the given DESTDIR/NXTP where # - Install the files to the given DESTDIR/NXTP where
# NXTP defaults to /nxb-bin. # NXTP defaults to /nxb-bin.
#
# "quick" way to test all kernel builds:
# _jflag=`sysctl -n hw.ncpu`
# _jflag=$(($_jflag * 2))
# [ $_jflag -gt 12 ] && _jflag=12
# make universe -DMAKE_JUST_KERNELS JFLAG=-j${_jflag}
# #
# This makefile is simple by design. The FreeBSD make automatically reads # This makefile is simple by design. The FreeBSD make automatically reads
# the /usr/share/mk/sys.mk unless the -m argument is specified on the # the /usr/share/mk/sys.mk unless the -m argument is specified on the