Re: [PATCH 28/30] configure, meson.build: Mark support for 64-bit LoongArch hosts

[WANG Xuerui]

Hi Richard,

On 9/21/21 21:30, Richard Henderson wrote:
> On 9/20/21 11:02 PM, WANG Xuerui wrote:
>
> > So should I drop the explicit probing for __loongarch64, instead just 
> > probe for __loongarch__ and later #error out the non-__loongarch64 
> > cases individually?
>
> I'm ok with checking the __loongarch64 define, but I thing 
> ARCH=loongarch is sufficient. That name will apply to 
> linux-user/host/$ARCH/ and tcg/$ARCH/.
I just dug deeper into this while waiting for compilations; indeed the 
cpu variable must be "loongarch64" but ARCH could be just "loongarch". 
The $cpu is shoved directly into the meson cross file as CPU family 
name, for which only "loongarch64" is valid [1]. I'll keep probing for 
__loongarch64 but just transform the ARCH value.

[1]: https://mesonbuild.com/Reference-tables.html#cpu-families