# git rev-parse -q --verify 815f0ddb346c196018d4d8f8f55c12b83da1de3f^{commit}
815f0ddb346c196018d4d8f8f55c12b83da1de3f
already have revision, skipping fetch
# git checkout -q -f -B kisskb 815f0ddb346c196018d4d8f8f55c12b83da1de3f
# git clean -qxdf
# < git log -1
# commit 815f0ddb346c196018d4d8f8f55c12b83da1de3f
# Author: Nick Desaulniers <ndesaulniers@google.com>
# Date:   Wed Aug 22 16:37:24 2018 -0700
# 
#     include/linux/compiler*.h: make compiler-*.h mutually exclusive
#     
#     Commit cafa0010cd51 ("Raise the minimum required gcc version to 4.6")
#     recently exposed a brittle part of the build for supporting non-gcc
#     compilers.
#     
#     Both Clang and ICC define __GNUC__, __GNUC_MINOR__, and
#     __GNUC_PATCHLEVEL__ for quick compatibility with code bases that haven't
#     added compiler specific checks for __clang__ or __INTEL_COMPILER.
#     
#     This is brittle, as they happened to get compatibility by posing as a
#     certain version of GCC.  This broke when upgrading the minimal version
#     of GCC required to build the kernel, to a version above what ICC and
#     Clang claim to be.
#     
#     Rather than always including compiler-gcc.h then undefining or
#     redefining macros in compiler-intel.h or compiler-clang.h, let's
#     separate out the compiler specific macro definitions into mutually
#     exclusive headers, do more proper compiler detection, and keep shared
#     definitions in compiler_types.h.
#     
#     Fixes: cafa0010cd51 ("Raise the minimum required gcc version to 4.6")
#     Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
#     Suggested-by: Eli Friedman <efriedma@codeaurora.org>
#     Suggested-by: Joe Perches <joe@perches.com>
#     Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-gcc --version
# < git log --format=%s --max-count=1 815f0ddb346c196018d4d8f8f55c12b83da1de3f
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_allmodconfig+ppc64le_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  allmodconfig
# Added to kconfig CONFIG_CPU_LITTLE_ENDIAN=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# yes \n | make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_allmodconfig+ppc64le_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_allmodconfig+ppc64le_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  
In file included from /kisskb/src/include/linux/io.h:25:0,
                 from /kisskb/src/include/linux/of_address.h:7,
                 from /kisskb/src/drivers/ata/ahci_qoriq.c:18:
/kisskb/src/drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset':
/kisskb/src/arch/powerpc/include/asm/io.h:160:2: warning: 'px_is' may be used uninitialized in this function [-Wmaybe-uninitialized]
  __asm__ __volatile__("sync;"#insn"%U0%X0 %1,%0"   \
  ^
/kisskb/src/drivers/ata/ahci_qoriq.c:86:14: note: 'px_is' was declared here
  u32 px_cmd, px_is, px_val;
              ^
In file included from /kisskb/src/include/linux/io.h:25:0,
                 from /kisskb/src/include/linux/of_address.h:7,
                 from /kisskb/src/drivers/ata/ahci_qoriq.c:18:
/kisskb/src/arch/powerpc/include/asm/io.h:160:2: warning: 'px_cmd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  __asm__ __volatile__("sync;"#insn"%U0%X0 %1,%0"   \
  ^
/kisskb/src/drivers/ata/ahci_qoriq.c:86:6: note: 'px_cmd' was declared here
  u32 px_cmd, px_is, px_val;
      ^
/kisskb/src/drivers/bluetooth/hci_h5.c:920:22: warning: 'rtl_vnd' defined but not used [-Wunused-variable]
 static struct h5_vnd rtl_vnd = {
                      ^
WARNING: vmlinux.o(.text+0x36b4): 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+0x3944): 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+0x3978): 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_allmodconfig+ppc64le_ppc64le
# Build took: 0:26:28.181345