releases/4.4.165/kbuild-clang-fix-build-failures-with-sparse-check.patch

   1 From foo@baz Wed Nov 21 18:50:39 CET 2018
   2 From: David Lin <dtwlin@google.com>
   3 Date: Fri, 20 Oct 2017 14:09:13 -0700
   4 Subject: kbuild: clang: fix build failures with sparse check
   5
   6 From: David Lin <dtwlin@google.com>
   7
   8 commit bb3f38c3c5b759163e09b9152629cc789731de47 upstream.
   9
  10 We should avoid using the space character when passing arguments to
  11 clang, because static code analysis check tool such as sparse may
  12 misinterpret the arguments followed by spaces as build targets hence
  13 cause the build to fail.
  14
  15 Signed-off-by: David Lin <dtwlin@google.com>
  16 Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
  17 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19 ---
  20  Makefile |    4 ++--
  21  1 file changed, 2 insertions(+), 2 deletions(-)
  22
  23 --- a/Makefile
  24 +++ b/Makefile
  25 @@ -614,11 +614,11 @@ all: vmlinux
  26
  27  ifeq ($(cc-name),clang)
  28  ifneq ($(CROSS_COMPILE),)
  29 -CLANG_TARGET   := -target $(notdir $(CROSS_COMPILE:%-=%))
  30 +CLANG_TARGET   := --target=$(notdir $(CROSS_COMPILE:%-=%))
  31  GCC_TOOLCHAIN  := $(realpath $(dir $(shell which $(LD)))/..)
  32  endif
  33  ifneq ($(GCC_TOOLCHAIN),)
  34 -CLANG_GCC_TC   := -gcc-toolchain $(GCC_TOOLCHAIN)
  35 +CLANG_GCC_TC   := --gcc-toolchain=$(GCC_TOOLCHAIN)
  36  endif
  37  KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
  38  KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)