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Add a note to src/Makefile that explains that 'rm' runs twice because the

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second invocation only needs to operate on files with the immutable flag
set.

Submitted by:		arundel (via private email) (original version)
Discussed on:		-toolchain@
MFC after:		3 days
This commit is contained in:
Glen Barber 2011-11-20 19:05:32 +00:00
parent 034235528f
commit 123ba50fdc
1 changed files with 4 additions and 1 deletions
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Makefile
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@ -185,7 +185,10 @@ buildworld: upgrade_checks
# files with chflags set, so this unsets them and tries the 'rm' a
# second time. There are situations where this target will be cleaning
# some directories via more than one method, but that duplication is
# needed to correctly handle all the possible situations.
# needed to correctly handle all the possible situations. Removing all
# files without the immutable flag set in the first 'rm' instance saves
# time, because 'chflags' will need to operate on fewer files (with the
# immutable flag set) afterwards.
#
BW_CANONICALOBJDIR:=${MAKEOBJDIRPREFIX}${.CURDIR}
cleanworld: