# git rev-parse -q --verify 49362029a00b1c8af81d635333806e3d0dc8fdc1^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# 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-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 49362029a00b1c8af81d635333806e3d0dc8fdc1
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pmac32_defconfig
# Added to kconfig CONFIG_SMP=y
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4145:warning: override: reassigning to symbol SMP
# make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xad7a84) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xb00000)
Completed OK
# rm -rf /kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5
# Build took: 0:02:09.917282