Re: PPC64: gcc currently compiles for power4 by default, causing glibc's sqrtf to fail on e6500

[Bas Vermeulen <bas@daedalean.ai>]

I get that. But configure in the gcc sources doesn't actually process those. So while they are in rules2, it doesn't actually change anything.

See https://github.com/gcc-mirror/gcc/blob/da8dff89fa9398f04b107e388cb706517ced9505/configure and search for with-cpu (which would catch both --with-cpu-32 and --with-cpu-64), and you won't find it there.

Bas Vermeulen

On Tue, Feb 6, 2018 at 7:25 PM, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:

On 02/06/2018 07:22 PM, Bas Vermeulen wrote:
> I just checked gcc's configure, and that doesn't take --with-cpu= as an argument. It doesn't fail when it has it, but it doesn't actually do anything with it
> either.
> So my patch would be the correct way to handle this.

That's because you have to use --with-cpu-32 and --with-cpu-64, see:

> https://sources.debian.org/src/gcc-7/7.3.0-1/debian/rules2/#L390

It's in the very same file I linked :).

--
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