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selftests: gpio: Find libmount with pkg-config if available 

If pkg-config is available, use it to define the CFLAGS and
LDLIBS needed for libmount; else, use the current hard-coded
paths and options.

Using pkg-config is very helpful for cross-compilation
environments, and is sometimes readily available on developer
boxes to ensure we get the right compiler/linker options for
the given package.

Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan <shuah@kernel.org>
This commit is contained in:
Daniel Díaz 2018-10-16 16:46:59 -05:00 committed by Shuah Khan
parent 7492902e8d
commit 694f1f926c
1 changed files with 8 additions and 2 deletions
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10
tools/testing/selftests/gpio/Makefile
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@ -1,7 +1,13 @@
# SPDX-License-Identifier: GPL-2.0
CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/
LDLIBS += -lmount -I/usr/include/libmount
MOUNT_CFLAGS := $(shell pkg-config --cflags mount 2>/dev/null)
MOUNT_LDLIBS := $(shell pkg-config --libs mount 2>/dev/null)
ifeq ($(MOUNT_LDLIBS),)
MOUNT_LDLIBS := -lmount -I/usr/include/libmount
endif
CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(MOUNT_CFLAGS)
LDLIBS += $(MOUNT_LDLIBS)
TEST_PROGS := gpio-mockup.sh
TEST_FILES := gpio-mockup-sysfs.sh