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BaseTools/tools_def: suppress GCC predefined macros in DTB compilation 

The standard GCC preprocessor we use to preprocess device tree source
files has a whole bunch of macros predefined, among which

  #define __linux 1
  #define __linux__ 1
  #define __gnu_linux__ 1
  #define linux 1

This causes a property like 'linux,code' to be converted into '1,code'
which is obviously wrong. So let's get rid of all the predefined macros
by passing -undef to the preprocessor command line.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Ard Biesheuvel 2017-10-26 11:06:48 +01:00
parent 1894a7c64c
commit 8512fc5731
1 changed files with 1 additions and 1 deletions
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BaseTools/Conf/tools_def.template
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@ -4369,7 +4369,7 @@ DEFINE GCC_VFRPP_FLAGS = -x c -E -P -DVFRCOMPILE --include $(DEST_DI
DEFINE GCC_ASLPP_FLAGS = -x c -E -include AutoGen.h
DEFINE GCC_ASLCC_FLAGS = -x c
DEFINE GCC_WINDRES_FLAGS = -J rc -O coff
DEFINE GCC_DTCPP_FLAGS = -E -x assembler-with-cpp -imacros $(DEST_DIR_DEBUG)/AutoGen.h -nostdinc
DEFINE GCC_DTCPP_FLAGS = -E -x assembler-with-cpp -imacros $(DEST_DIR_DEBUG)/AutoGen.h -nostdinc -undef
DEFINE GCC_IA32_RC_FLAGS = -I binary -O elf32-i386 -B i386 --rename-section .data=.hii
DEFINE GCC_X64_RC_FLAGS = -I binary -O elf64-x86-64 -B i386 --rename-section .data=.hii
DEFINE GCC_IPF_RC_FLAGS = -I binary -O elf64-ia64-little -B ia64 --rename-section .data=.hii