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authorMichael Ellerman <mpe@ellerman.id.au>2020-11-04 21:08:42 +1100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-06-03 09:00:31 +0200
commiteeb3f0b0c3514f37d0df66d11d4afe9d9cfff603 (patch)
tree65e15e1a79967e2b7472a29b9416954aabb72392 /tools/testing/selftests
parent008f98f1dbac4a409dcfe58498dfab298ae7a80d (diff)
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selftests/gpio: Fix build when source tree is read only
[ Upstream commit b68c1c65dec5fb5186ebd33ce52059b4c6db8500 ] Currently the gpio selftests fail to build if the source tree is read only: make -j 160 -C tools/testing/selftests TARGETS=gpio make[1]: Entering directory '/linux/tools/testing/selftests/gpio' make OUTPUT=/linux/tools/gpio/ -C /linux/tools/gpio make[2]: Entering directory '/linux/tools/gpio' mkdir -p /linux/tools/gpio/include/linux 2>&1 || true ln -sf /linux/tools/gpio/../../include/uapi/linux/gpio.h /linux/tools/gpio/include/linux/gpio.h ln: failed to create symbolic link '/linux/tools/gpio/include/linux/gpio.h': Read-only file system This happens because we ask make to build ../../../gpio (tools/gpio) without pointing OUTPUT away from the source directory. To fix it we create a subdirectory of the existing OUTPUT directory, called tools-gpio, and tell tools/gpio to build in there. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r--tools/testing/selftests/gpio/Makefile14
1 files changed, 9 insertions, 5 deletions
diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile
index 615c8a953ade..acf4088a9891 100644
--- a/tools/testing/selftests/gpio/Makefile
+++ b/tools/testing/selftests/gpio/Makefile
@@ -17,14 +17,18 @@ KSFT_KHDR_INSTALL := 1
include ../lib.mk
GPIODIR := $(realpath ../../../gpio)
-GPIOOBJ := gpio-utils.o
+GPIOOUT := $(OUTPUT)/tools-gpio/
+GPIOOBJ := $(GPIOOUT)/gpio-utils.o
override define CLEAN
$(RM) $(TEST_GEN_PROGS_EXTENDED)
- $(MAKE) -C $(GPIODIR) OUTPUT=$(GPIODIR)/ clean
+ $(RM) -rf $(GPIOOUT)
endef
-$(TEST_GEN_PROGS_EXTENDED): $(GPIODIR)/$(GPIOOBJ)
+$(TEST_GEN_PROGS_EXTENDED): $(GPIOOBJ)
-$(GPIODIR)/$(GPIOOBJ):
- $(MAKE) OUTPUT=$(GPIODIR)/ -C $(GPIODIR)
+$(GPIOOUT):
+ mkdir -p $@
+
+$(GPIOOBJ): $(GPIOOUT)
+ $(MAKE) OUTPUT=$(GPIOOUT) -C $(GPIODIR)