Re: Patch adding POWER9 cross compile support

[Tobias Platen]

I ran configure on my Talos II, and got the following error message.

checking for the Guix system type... powerpc64le-linux
configure: error: `powerpc64le-linux' is not a supported platform.
See "GNU Distribution" in the manual, or try `--with-courage'.

Guix already knows about this architecture, but building glibc will fail 
if gcc does not have the float128 datatype. Once I saw this link[1] on 
the guix mailing list, I knew how to solve the build error.

For the second question I could not find an answer.

[1] http://lists.busybox.net/pipermail/buildroot/2017-September/201379.html

Tobias

On 03/10/2019 06:27 PM, Ludovic Courtès wrote:
> Hi Tobias,
>
> Tobias Platen <address@hidden> skribis:
>
> > On 03/06/2019 02:54 PM, Ludovic Courtès wrote:
> > > +                               ,@(if (string-prefix? "powerpc9-" target)
> > > +                                     ;; On POWER9 we need this because XXX.
> > > +                                     '("--with-long-double-128")
> > > +                                     '())
> > > +
> > It needs to be ppc64el I think. I will later do a test in a big endian
> > vm. POWER9 is a bi-endian architecture, and most distros only support
> > little-endian. POWER4 only supports big-endian, and is still supported
> > by some distros. After testing I will send an updated patch.
>
> I don’t think that answers my questions.  :-)
>
> Those were:
>
>    1. What GNU triplet do you use?

>    2. What the reason for this extra configure flag, so we can add it in
>       the comment above in place of XXX?
>
> TIA!
>
> Ludo’.

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