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-mtune=native was not being passed to the compiler on x86-64 as the default if MMAKE_CTUNE was not set.#316

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lukester1975:fix-mtune
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-mtune=native was not being passed to the compiler on x86-64 as the default if MMAKE_CTUNE was not set.#316
lukester1975 wants to merge 1 commit intoXilinx-CNS:v8_1from
lukester1975:fix-mtune

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@lukester1975
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Hello again

I assume this wasn't intended behaviour (also cf. the other arches), otherwise that MMAKE_CARCH ?= -mtune=native should presumably be removed?

Before: ... -m64 -Wall ...
After: ... -m64 -mtune=native -Wall ...

Thanks

@lukester1975 lukester1975 requested a review from a team as a code owner January 14, 2026 10:34
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