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7ab44e9ee5
As noted in the comment, -mtune= has been supported since GCC 3.4. The minimum required version of GCC to build the kernel (as specified in Documentation/process/changes.rst) is GCC 4.9. tune is not immediately expanded. Instead it defines a macro that will test via cc-option later values for -mtune=. But we can skip the test whether to use -mtune= vs. -mcpu=. Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>