# git gc
# git rev-parse -q --verify 7c4548d2cc817320b4d7fca9beb30a455121ec7d^{commit}
# git fetch -q -n -f https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/kspp
# git rev-parse -q --verify 7c4548d2cc817320b4d7fca9beb30a455121ec7d^{commit}
7c4548d2cc817320b4d7fca9beb30a455121ec7d
# git checkout -q -f -B kisskb 7c4548d2cc817320b4d7fca9beb30a455121ec7d
# git clean -qxdf
# < git log -1
# commit 7c4548d2cc817320b4d7fca9beb30a455121ec7d
# Author: Gustavo A. R. Silva <gustavoars@kernel.org>
# Date:   Mon Jul 12 00:57:54 2021 -0500
# 
#     Makefile: Enable -Wimplicit-fallthrough for Clang
#     
#     With the recent fixes for fallthrough warnings, it is now possible to
#     enable -Wimplicit-fallthrough for Clang.
#     
#     Notice that since we have adopted the new pseudo-keyword macro
#     fallthrough; we also want to avoid having more /* fall through */
#     comments being introduced. Contrary to GCC, Clang doesn't recognize
#     any comments as implicit fall-through markings when the
#     -Wimplicit-fallthrough option is enabled. So, in order to avoid
#     more comments being introduced, we need to use the option
#     -Wimplicit-fallthrough=5 for GCC.
#     
#     Co-developed-by: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-ld --version
# < git log --format=%s --max-count=1 7c4548d2cc817320b4d7fca9beb30a455121ec7d
# < make -s -j 10 ARCH=i386 O=/kisskb/build/gustavoars_i386-allnoconfig_i386-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-  allnoconfig
# < make -s -j 10 ARCH=i386 O=/kisskb/build/gustavoars_i386-allnoconfig_i386-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-  help
# make -s -j 10 ARCH=i386 O=/kisskb/build/gustavoars_i386-allnoconfig_i386-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-  olddefconfig
# make -s -j 10 ARCH=i386 O=/kisskb/build/gustavoars_i386-allnoconfig_i386-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/i386-linux/bin/i386-linux-  
Completed OK
# rm -rf /kisskb/build/gustavoars_i386-allnoconfig_i386-gcc4.9
# Build took: 0:06:36.989501