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tools: gpio: Use !building_out_of_srctree to determine srctree

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make TARGETS=gpio kselftest fails with:

Makefile:23: tools/build/Makefile.include: No such file or directory

When the gpio tool make is invoked from tools Makefile, srctree is
cleared and the current logic check for srctree equals to empty
string to determine srctree location from CURDIR.

When the build in invoked from selftests/gpio Makefile, the srctree
is set to "." and the same logic used for srctree equals to empty is
needed to determine srctree.

Check building_out_of_srctree undefined as the condition for both
cases to fix "make TARGETS=gpio kselftest" build failure.

Cc: stable@vger.kernel.org
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Shuah Khan 2019-09-26 19:16:41 -06:00 committed by Bartosz Golaszewski
parent 7d194c2100
commit 4a6a6f5c4a
1 changed files with 5 additions and 1 deletions
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6
tools/gpio/Makefile
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@ -3,7 +3,11 @@ include ../scripts/Makefile.include
bindir ?= /usr/bin
ifeq ($(srctree),)
# This will work when gpio is built in tools env. where srctree
# isn't set and when invoked from selftests build, where srctree
# is set to ".". building_out_of_srctree is undefined for in srctree
# builds
ifndef building_out_of_srctree
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
endif