# git rev-parse -q --verify 402928b58ec62b42b11992a7b51ff2f56ed65a18^{commit}
402928b58ec62b42b11992a7b51ff2f56ed65a18
already have revision, skipping fetch
# git checkout -q -f -B kisskb 402928b58ec62b42b11992a7b51ff2f56ed65a18
# git clean -qxdf
# < git log -1
# commit 402928b58ec62b42b11992a7b51ff2f56ed65a18
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Wed Dec 6 22:55:48 2023 +1100
# 
#     powerpc/Makefile: Auto detect cross compiler
#     
#     If no cross compiler is specified, try to auto detect one.
#     
#     Look for various combinations, matching:
#       powerpc(64(le)?)?(-unknown)?-linux(-gnu)?-
#     
#     There are more possibilities, but the above is known to find a compiler
#     on Fedora and Ubuntu (which use linux-gnu-), and also detects the
#     kernel.org cross compilers (which use linux-).
#     
#     This allows cross compiling with simply:
#     
#      # Ubuntu
#      $ sudo apt install gcc-powerpc-linux-gnu
#      # Fedora
#      $ sudo dnf install gcc-powerpc64-linux-gnu
#     
#      $ make ARCH=powerpc defconfig
#      $ make ARCH=powerpc -j 4
#     
#     Inspired by arch/parisc/Makefile.
#     
#     Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://msgid.link/20231206115548.1466874-4-mpe@ellerman.id.au
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 402928b58ec62b42b11992a7b51ff2f56ed65a18
# make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-next_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  defconfig
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# Added to kconfig 
# < make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-next_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-next_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
.config:3757:warning: override: reassigning to symbol DEBUG_INFO_BTF
# make -s -j 160 ARCH=s390 O=/kisskb/build/powerpc-next_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_defconfig_s390x-gcc13
# Build took: 0:04:47.042200