适用于所有 x64 平台的 gcc 通用行军 [英] gcc generic march for all the x64 platforms

问题描述

GCC 具有 -march= 和 -mtune 选项，如此处.但是对于 x64 平台选择哪个选项作为通用选项并不明显.比如说，-mtune= 有 generic 值，但是 -march= 对于 x64 没有.

GCC have -march= and -mtune option as described here. But it is not obvious which of the options to choose for x64 platform as generic one. Say, -mtune= have the generic value, but -march= for x64 have no.

我怀疑 -march=nocona(随处可见)甚至 -march=i686 -m64 是解决方案，但我不确定.

I suspect that -march=nocona (as frequently seen everywhere) or even -march=i686 -m64 is the solution, but I'm not sure.

推荐答案

通用的 x86-64 -march 是 -march=x86-64.

The generic x86-64 -march is -march=x86-64.

它通常是面向 x86-64 的 GCC 的默认设置，但可以在 configure 时通过将适当的值传递给 --with- 来更改该默认值拱形.

It is usually the default for GCC targeting x86-64, but that default can be changed at configure time by passing appropriate value to --with-arch.

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