selftests/powerpc: Fix build failure in ebb tests
We use OUTPUT directory as TMPOUT for checking no-pie option. Since commitf2f02ebd8f
("kbuild: improve cc-option to clean up all temporary files") when building powerpc/ from selftests directory, the OUTPUT directory points to powerpc/pmu/ebb/ and gets removed when checking for -no-pie option in try-run routine, subsequently build fails with the following: $ make -C powerpc ... TARGET=ebb; BUILD_TARGET=$OUTPUT/$TARGET; mkdir -p $BUILD_TARGET; make OUTPUT=$BUILD_TARGET -k -C $TARGET all make[2]: Entering directory '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb' make[2]: *** No rule to make target 'Makefile'. make[2]: Failed to remake makefile 'Makefile'. make[2]: *** No rule to make target 'ebb.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'ebb_handler.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'trace.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'busy_loop.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: Target 'all' not remade because of errors. Fix this by adding a suffix to the OUTPUT directory so that the failure is avoided. Fixes:9686813f6e
("selftests/powerpc: Fix try-run when source tree is not writable") Signed-off-by: Harish <harish@linux.ibm.com> [mpe: Mention that commit that triggered the breakage] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200625165721.264904-1-harish@linux.ibm.com
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c1ed1754f2
Коммит
896066aa06
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@ -7,7 +7,7 @@ noarg:
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# The EBB handler is 64-bit code and everything links against it
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CFLAGS += -m64
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TMPOUT = $(OUTPUT)/
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TMPOUT = $(OUTPUT)/TMPDIR/
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# Toolchains may build PIE by default which breaks the assembly
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no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
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$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)
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