# git rev-parse -q --verify 2d00aee21a5d4966e086d98f9d710afb92fb14e8^{commit}
2d00aee21a5d4966e086d98f9d710afb92fb14e8
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2d00aee21a5d4966e086d98f9d710afb92fb14e8
# git clean -qxdf
# < git log -1
# commit 2d00aee21a5d4966e086d98f9d710afb92fb14e8
# Merge: 126195c972a2 86cdd2fdc4e3
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Oct 5 12:56:59 2019 -0700
# 
#     Merge tag 'kbuild-fixes-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
#     
#     Pull Kbuild fixes from Masahiro Yamada:
#     
#      - remove unneeded ar-option and KBUILD_ARFLAGS
#     
#      - remove long-deprecated SUBDIRS
#     
#      - fix modpost to suppress false-positive warnings for UML builds
#     
#      - fix namespace.pl to handle relative paths to ${objtree}, ${srctree}
#     
#      - make setlocalversion work for /bin/sh
#     
#      - make header archive reproducible
#     
#      - fix some Makefiles and documents
#     
#     * tag 'kbuild-fixes-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
#       kheaders: make headers archive reproducible
#       kbuild: update compile-test header list for v5.4-rc2
#       kbuild: two minor updates for Documentation/kbuild/modules.rst
#       scripts/setlocalversion: clear local variable to make it work for sh
#       namespace: fix namespace.pl script to support relative paths
#       video/logo: do not generate unneeded logo C files
#       video/logo: remove unneeded *.o pattern from clean-files
#       integrity: remove pointless subdir-$(CONFIG_...)
#       integrity: remove unneeded, broken attempt to add -fshort-wchar
#       modpost: fix static EXPORT_SYMBOL warnings for UML build
#       kbuild: correct formatting of header in kbuild module docs
#       kbuild: remove SUBDIRS support
#       kbuild: remove ar-option and KBUILD_ARFLAGS
# < /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 2d00aee21a5d4966e086d98f9d710afb92fb14e8
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
In file included from /kisskb/src/include/linux/list.h:9:0,
                 from /kisskb/src/include/linux/wait.h:7,
                 from /kisskb/src/include/linux/wait_bit.h:8,
                 from /kisskb/src/include/linux/fs.h:6,
                 from /kisskb/src/fs/btrfs/send.c:7:
/kisskb/src/fs/btrfs/send.c: In function 'process_extent':
/kisskb/src/include/linux/kernel.h:37:33: warning: 'clone_src_i_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define IS_ALIGNED(x, a)  (((x) & ((typeof(x))(a) - 1)) == 0)
                                 ^
/kisskb/src/fs/btrfs/send.c:5088:6: note: 'clone_src_i_size' was declared here
  u64 clone_src_i_size;
      ^
WARNING: vmlinux.o(.text+0x31e4): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init()
The function __boot_from_prom() references
the function __init prom_init().
This is often because __boot_from_prom lacks a __init 
annotation or the annotation of prom_init is wrong.

WARNING: vmlinux.o(.text+0x33c8): 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/linus_ppc64le_defconfig_ppc64le-gcc5
# Build took: 0:02:47.456312