# git rev-parse -q --verify b753101a4ac0b906064a72feec43f5b80a1fe2e5^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify b753101a4ac0b906064a72feec43f5b80a1fe2e5^{commit}
b753101a4ac0b906064a72feec43f5b80a1fe2e5
# git checkout -q -f -B kisskb b753101a4ac0b906064a72feec43f5b80a1fe2e5
# git clean -qxdf
# < git log -1
# commit b753101a4ac0b906064a72feec43f5b80a1fe2e5
# Merge: c7850ae4d71c 00d76a0c1943
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Apr 11 09:46:12 2020 -0700
# 
#     Merge tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
#     
#     Pull more Kbuild updates from Masahiro Yamada:
#     
#      - raise minimum supported binutils version to 2.23
#     
#      - remove old CONFIG_AS_* macros that we know binutils >= 2.23 supports
#     
#      - move remaining CONFIG_AS_* tests to Kconfig from Makefile
#     
#      - enable -Wtautological-compare warnings to catch more issues
#     
#      - do not support GCC plugins for GCC <= 4.7
#     
#      - fix various breakages of 'make xconfig'
#     
#      - include the linker version used for linking the kernel into
#        LINUX_COMPILER, which is used for the banner, and also exposed to
#        /proc/version
#     
#      - link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y, which
#        allows us to remove the lib-ksyms.o workaround, and to solve the last
#        known issue of the LLVM linker
#     
#      - add dummy tools in scripts/dummy-tools/ to enable all compiler tests
#        in Kconfig, which will be useful for distro maintainers
#     
#      - support the single switch, LLVM=1 to use Clang and all LLVM utilities
#        instead of GCC and Binutils.
#     
#      - support LLVM_IAS=1 to enable the integrated assembler, which is still
#        experimental
#     
#     * tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (36 commits)
#       kbuild: fix comment about missing include guard detection
#       kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
#       kbuild: replace AS=clang with LLVM_IAS=1
#       kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig
#       kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y
#       MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory
#       kbuild: remove -I$(srctree)/tools/include from scripts/Makefile
#       kbuild: do not pass $(KBUILD_CFLAGS) to scripts/mkcompile_h
#       Documentation/llvm: fix the name of llvm-size
#       kbuild: mkcompile_h: Include $LD version in /proc/version
#       kconfig: qconf: Fix a few alignment issues
#       kconfig: qconf: remove some old bogus TODOs
#       kconfig: qconf: fix support for the split view mode
#       kconfig: qconf: fix the content of the main widget
#       kconfig: qconf: Change title for the item window
#       kconfig: qconf: clean deprecated warnings
#       gcc-plugins: drop support for GCC <= 4.7
#       kbuild: Enable -Wtautological-compare
#       x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2
#       crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean'
#       ...
# < /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 b753101a4ac0b906064a72feec43f5b80a1fe2e5
# < make -s -j 48 ARCH=sparc O=/kisskb/build/linus_sparc-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# < make -s -j 48 ARCH=sparc O=/kisskb/build/linus_sparc-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  help
# make -s -j 48 ARCH=sparc O=/kisskb/build/linus_sparc-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  olddefconfig
# make -s -j 48 ARCH=sparc O=/kisskb/build/linus_sparc-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]
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return oldval == cmparg;
                 ^
/kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here
  int oldval, ret;
      ^
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc-defconfig_sparc64
# Build took: 0:00:54.285123