# git rev-parse -q --verify edd4d23d290772d75891f7cf35eb6bb66f2e4fe5^{commit}
edd4d23d290772d75891f7cf35eb6bb66f2e4fe5
already have revision, skipping fetch
# git checkout -q -f -B kisskb edd4d23d290772d75891f7cf35eb6bb66f2e4fe5
# git clean -qxdf
# < git log -1
# commit edd4d23d290772d75891f7cf35eb6bb66f2e4fe5
# Author: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
# Date:   Sat Nov 9 13:12:16 2019 +0100
# 
#     kbuild: tell sparse about the $ARCH
#     
#     Sparse uses the same executable for all archs and uses flags
#     like -m64, -mbig-endian or -D__arm__ for arch-specific parameters.
#     But Sparse also uses value from the host machine used to build
#     Sparse as default value for the target machine.
#     
#     This works, of course, well for native build but can create
#     problems when cross-compiling, like defining both '__i386__'
#     and '__arm__' when cross-compiling for arm on a x86-64 machine.
#     
#     Fix this by explicitely telling sparse the target architecture.
#     
#     Reported-by: Ben Dooks <ben.dooks@codethink.co.uk>
#     Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
#     Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 edd4d23d290772d75891f7cf35eb6bb66f2e4fe5
# < make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  defconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
cc1: error: unrecognized command line option '-mtune=zEC12'cc1: error: unrecognized command line option '-mtune=zEC12'

make[2]: *** [/kisskb/src/scripts/Makefile.build:99: scripts/mod/devicetable-offsets.s] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:266: scripts/mod/empty.o] Error 1
make[1]: *** [/kisskb/src/Makefile:1112: prepare0] Error 2
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/kbuild_s390-defconfig_s390x
# Build took: 0:00:04.570348