# git rev-parse -q --verify 49362029a00b1c8af81d635333806e3d0dc8fdc1^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
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 49362029a00b1c8af81d635333806e3d0dc8fdc1^{commit}
49362029a00b1c8af81d635333806e3d0dc8fdc1
# git checkout -q -f -B kisskb 49362029a00b1c8af81d635333806e3d0dc8fdc1
# git clean -qxdf
# < git log -1
# commit 49362029a00b1c8af81d635333806e3d0dc8fdc1
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Sun Dec 13 01:54:30 2020 +0900
# 
#     kbuild: LD_VERSION redenomination
#     
#     Commit ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion
#     macros") introduced scripts/ld-version.sh for GCC LTO.
#     
#     At that time, this script handled 5 version fields because GCC LTO
#     needed the downstream binutils. (https://lkml.org/lkml/2014/4/8/272)
#     
#     The code snippet from the submitted patch was as follows:
#     
#         # We need HJ Lu's Linux binutils because mainline binutils does not
#         # support mixing assembler and LTO code in the same ld -r object.
#         # XXX check if the gcc plugin ld is the expected one too
#         # XXX some Fedora binutils should also support it. How to check for that?
#         ifeq ($(call ld-ifversion,-ge,22710001,y),y)
#             ...
#     
#     However, GCC LTO was not merged into the mainline after all.
#     (https://lkml.org/lkml/2014/4/8/272)
#     
#     So, the 4th and 5th fields were never used, and finally removed by
#     commit 0d61ed17dd30 ("ld-version: Drop the 4th and 5th version
#     components").
#     
#     Since then, the last 4-digits returned by this script is always zeros.
#     
#     Remove the meaningless last 4-digits. This makes the version format
#     consistent with GCC_VERSION, CLANG_VERSION, LLD_VERSION.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
#     Acked-by: Will Deacon <will@kernel.org>
#     Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 49362029a00b1c8af81d635333806e3d0dc8fdc1
# < make -s -j 8 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  defconfig
# < make -s -j 8 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 8 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 8 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  
/kisskb/src/fs/btrfs/tree-checker.c: In function 'check_root_item':
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: missing braces around initializer [-Wmissing-braces]
  struct btrfs_root_item ri = { 0 };
         ^
/kisskb/src/fs/btrfs/tree-checker.c:1071:9: warning: (near initialization for 'ri.inode') [-Wmissing-braces]
Completed OK
# rm -rf /kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9
# Build took: 0:06:29.688706