Re: [PATCH 2/2] tools: do not include scripts/Kbuild.include

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On 15.04.21 09:27, Masahiro Yamada wrote:
Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to
scripts/Makefile.compiler"), some kselftests fail to build.

The tools/ directory opted out Kbuild, and went in a different
direction. They copy any kind of files to the tools/ directory
in order to do whatever they want to do in their world.

tools/build/Build.include mimics scripts/Kbuild.include, but some
tool Makefiles included the Kbuild one to import a feature that is
missing in tools/build/Build.include:

  - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector"
    only if supported") included scripts/Kbuild.include from
    tools/thermal/tmon/Makefile to import the cc-option macro.

  - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do
    not support -no-pie") included scripts/Kbuild.include from
    tools/testing/selftests/kvm/Makefile to import the try-run macro.

  - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang
    failures") included scripts/Kbuild.include from
    tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR
    target.

  - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for
    unrecognized option") included scripts/Kbuild.include from
    tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the
    try-run macro.

Copy what they want there, and stop including scripts/Kbuild.include
from the tool Makefiles.

Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@xxxxxxxxxxxxx/
Fixes: d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler")
Reported-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
Reported-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>

When applying this on top of d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler")

I still do get

# ==== Test Assertion Failure ====
#   lib/kvm_util.c:142: vm->fd >= 0
#   pid=315635 tid=315635 - Invalid argument
#      1	0x0000000001002f4b: vm_open at kvm_util.c:142
#      2	 (inlined by) vm_create at kvm_util.c:258
#      3	0x00000000010015ef: test_add_max_memory_regions at set_memory_region_test.c:351
#      4	 (inlined by) main at set_memory_region_test.c:397
#      5	0x000003ff971abb89: ?? ??:0
#      6	0x00000000010017ad: .annobin_abi_note.c.hot at crt1.o:?
#   KVM_CREATE_VM ioctl failed, rc: -1 errno: 22
not ok 7 selftests: kvm: set_memory_region_test # exit=254

and the testcase compilation does not pickup the pgste option.



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