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  • Masahiro Yamada's avatar
    kbuild: check CONFIG_AS_IS_LLVM instead of LLVM_IAS · 52cc02b9
    Masahiro Yamada authored
    LLVM_IAS is the user interface to set the -(no-)integrated-as flag,
    and it should be used only for that purpose.
    
    LLVM_IAS is checked in some places to determine the assembler type,
    but it is not precise.
    
    For example,
    
     $ make CC=gcc LLVM_IAS=1
    
    ... will use the GNU assembler (i.e. binutils) since LLVM_IAS=1 is
    effective only when $(CC) is clang.
    
    Of course, 'CC=gcc LLVM_IAS=1' is an odd combination, but the build
    system can be more robust against such insane input.
    
    Commit ba64beb1
    
     ("kbuild: check the minimum assembler version in
    Kconfig") introduced CONFIG_AS_IS_GNU/LLVM, which is more precise
    because Kconfig checks the version string from the assembler in use.
    
    Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
    Reviewed-by: default avatarNick Desaulniers <ndesaulniers@google.com>
    Reviewed-by: default avatarNathan Chancellor <nathan@kernel.org>
    52cc02b9