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Merge from CheriBSD:

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commit 1d1b908107
Author: Brooks Davis <brooks@one-eyed-alien.net>
Date:   Fri Mar 28 16:24:45 2014 +0000

    Add a long needed seatbelt.

    Exit with an error when make is called without a target at the top level
    rather than poluting the source tree and causing use confusion in future
    builds.

commit a9d9aa341b
Author: Brooks Davis <brooks@one-eyed-alien.net>
Date:   Tue Apr 29 16:06:12 2014 +0000

    Simplify seatbelt added in 1d1b908 based in feedback.

    Discussed with:	imp@FreeBSD.org

Reviewed by:	imp
Sponsored by:	DARPA, AFRL
This commit is contained in:
Brooks Davis 2014-04-29 16:57:25 +00:00
parent 68bbdd0e71
commit 4b55d3602f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=265097
1 changed files with 11 additions and 2 deletions
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13
Makefile
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@ -238,8 +238,17 @@ tinderbox toolchains kernel-toolchains: .MAKE
${TGTS}:
${_+_}@cd ${.CURDIR}; ${_MAKE} ${.TARGET}
# Set a reasonable default
.MAIN: all
# The historic default "all" target creates files which may cause stale
# or (in the cross build case) unlinkable results. Fail with an error
# when no target is given. The users can explicitly specify "all"
# if they want the historic behavior.
.MAIN: _guard
_guard:
@echo
@echo "Explicit target required (use \"all\" for historic behavior)"
@echo
@false
STARTTIME!= LC_ALL=C date
CHECK_TIME!= find ${.CURDIR}/sys/sys/param.h -mtime -0s ; echo