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Makefile: unexport O

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After bee5745ccc2 ("Makefile: don't depend on the umask"), any use
of "make O=<dir>" would leak $O into the enviroment for submakes,
and it's inherited by package makefiles. Some package makefiles have
protections to make sure they don't use the value of $O if it comes from
the enviroment (Linux), but some don't (uClibc).

This caused build failures when using a different output dir.

Fix this by unconditionally unexporting the O variable, since we never
need to have it set in the environment for packages, it should be only
internally used by BR.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Guido Martínez 2015-07-25 16:07:39 -03:00 committed by Thomas Petazzoni
parent c44cf2cc97
commit 2e32330c4a
1 changed files with 1 additions and 0 deletions
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Makefile
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@ -329,6 +329,7 @@ unexport CONFIG_SITE
unexport QMAKESPEC
unexport TERMINFO
unexport MACHINE
unexport O
GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)