# git rev-parse -q --verify 2f050d49e589cc23e2aa40628d9154e9569aee43^{commit}
2f050d49e589cc23e2aa40628d9154e9569aee43
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2f050d49e589cc23e2aa40628d9154e9569aee43
# git clean -qxdf
# < git log -1
# commit 2f050d49e589cc23e2aa40628d9154e9569aee43
# Author: Nathan Chancellor <natechancellor@gmail.com>
# Date:   Sun Aug 11 19:32:15 2019 -0700
# 
#     powerpc: Avoid clang warnings around setjmp and longjmp
#     
#     Commit aea447141c7e ("powerpc: Disable -Wbuiltin-requires-header when
#     setjmp is used") disabled -Wbuiltin-requires-header because of a
#     warning about the setjmp and longjmp declarations.
#     
#     r367387 in clang added another diagnostic around this, complaining
#     that there is no jmp_buf declaration.
#     
#       In file included from ../arch/powerpc/xmon/xmon.c:47:
#       ../arch/powerpc/include/asm/setjmp.h:10:13: error: declaration of
#       built-in function 'setjmp' requires the declaration of the 'jmp_buf'
#       type, commonly provided in the header <setjmp.h>.
#       [-Werror,-Wincomplete-setjmp-declaration]
#       extern long setjmp(long *);
#                   ^
#       ../arch/powerpc/include/asm/setjmp.h:11:13: error: declaration of
#       built-in function 'longjmp' requires the declaration of the 'jmp_buf'
#       type, commonly provided in the header <setjmp.h>.
#       [-Werror,-Wincomplete-setjmp-declaration]
#       extern void longjmp(long *, long);
#                   ^
#       2 errors generated.
#     
#     Take the same approach as the above commit by disabling the warning
#     for the same reason, we provide our own longjmp/setjmp function.
#     
#     Cc: stable@vger.kernel.org # 4.19+
#     Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
#     Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20190812023214.107817-1-natechancellor@gmail.com
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 2f050d49e589cc23e2aa40628d9154e9569aee43
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/powerpc-next_sparc64-defconfig_sparc64
# Build took: 0:00:42.648406