# git rev-parse -q --verify f9d7adc7b0d6617fe778552d1f2a893ed39b961a^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify f9d7adc7b0d6617fe778552d1f2a893ed39b961a^{commit}
f9d7adc7b0d6617fe778552d1f2a893ed39b961a
# git checkout -q -f -B kisskb f9d7adc7b0d6617fe778552d1f2a893ed39b961a
# git clean -qxdf
# < git log -1
# commit f9d7adc7b0d6617fe778552d1f2a893ed39b961a
# Author: Masahiro Yamada <yamada.masahiro@socionext.com>
# Date:   Mon May 13 15:22:17 2019 +0900
# 
#     kbuild: remove 'addtree' and 'flags' magic for header search paths
#     
#     The 'addtree' and 'flags' in scripts/Kbuild.include are so compilecated
#     and ugly.
#     
#     As I mentioned in [1], Kbuild should stop automatic prefixing of header
#     search path options.
#     
#     Instead, in-kernel Makefiles should explicitly add $(srctree)/ to
#     the search paths in the srctree.
#     
#     Kbuild still caters to add $(srctree)/$(src) and $(objtree)/$(obj)
#     to the header search path for O= building, but never touches extra
#     compiler options from ccflags-y etc.
#     
#     Going forward, in-kernel Makefiles should explicitly specify
#     $(srctree)/ if extra search paths are needed.
#     
#      Example)    ccflags-y += -I $(srctree)/foo/bar
#     
#     You do not have to change external module Makefiles because $(src)
#     is already an absolute path for external modules.
#     
#      Example)    ccflags-y += -I $(src)/foo/bar
#     
#     [1]: https://patchwork.kernel.org/patch/9632347/
#     
#     Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
# < /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 f9d7adc7b0d6617fe778552d1f2a893ed39b961a
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# make -s -j 24 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
<stdin>:1388:2: warning: #warning syscall open_tree not implemented [-Wcpp]
<stdin>:1391:2: warning: #warning syscall move_mount not implemented [-Wcpp]
<stdin>:1394:2: warning: #warning syscall fsopen not implemented [-Wcpp]
<stdin>:1397:2: warning: #warning syscall fsconfig not implemented [-Wcpp]
<stdin>:1400:2: warning: #warning syscall fsmount not implemented [-Wcpp]
<stdin>:1403:2: warning: #warning syscall fspick not implemented [-Wcpp]
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1658:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return oldval == cmparg;
                 ^
/kisskb/src/kernel/futex.c:1633:6: note: 'oldval' was declared here
  int oldval, ret;
      ^
WARNING: vmlinux.o(.text+0x3128): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:early_setup()
The function start_here_multiplatform() references
the function __init early_setup().
This is often because start_here_multiplatform lacks a __init 
annotation or the annotation of early_setup is wrong.

WARNING: vmlinux.o(.text+0x3164): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/kbuild_powernv_defconfig_ppc64le-gcc5
# Build took: 0:03:32.081875