896066aa06
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 $TARGET all make[2]: Entering directory '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb' make[2]: *** No rule to make target 'Makefile'. make[2]: Failed to remake makefile 'Makefile'. make[2]: *** No rule to make target 'ebb.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'ebb_handler.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'trace.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: *** No rule to make target 'busy_loop.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'. make[2]: Target 'all' not remade because of errors. Fix this by adding a suffix to the OUTPUT directory so that the failure is avoided. Fixes:9686813f6e("selftests/powerpc: Fix try-run when source tree is not writable") Signed-off-by: Harish <harish@linux.ibm.com> [mpe: Mention that commit that triggered the breakage] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200625165721.264904-1-harish@linux.ibm.com
38 lines
1.2 KiB
Makefile
38 lines
1.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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include ../../../../../../scripts/Kbuild.include
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noarg:
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$(MAKE) -C ../../
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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)/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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LDFLAGS += $(no-pie-option)
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TEST_GEN_PROGS := reg_access_test event_attributes_test cycles_test \
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cycles_with_freeze_test pmc56_overflow_test \
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ebb_vs_cpu_event_test cpu_event_vs_ebb_test \
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cpu_event_pinned_vs_ebb_test task_event_vs_ebb_test \
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task_event_pinned_vs_ebb_test multi_ebb_procs_test \
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multi_counter_test pmae_handling_test \
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close_clears_pmcc_test instruction_count_test \
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fork_cleanup_test ebb_on_child_test \
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ebb_on_willing_child_test back_to_back_ebbs_test \
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lost_exception_test no_handler_test \
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cycles_with_mmcr2_test
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top_srcdir = ../../../../../..
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include ../../../lib.mk
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$(TEST_GEN_PROGS): ../../harness.c ../../utils.c ../event.c ../lib.c \
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ebb.c ebb_handler.S trace.c busy_loop.S
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$(OUTPUT)/instruction_count_test: ../loop.S
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$(OUTPUT)/lost_exception_test: ../lib.c
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