[Rd] R 4.0.0 build error with sysdata.rda on ppc64el architecture

[Iñaki Ucar]

On Thu, 30 Apr 2020 at 02:49, Dirk Eddelbuettel <edd using debian.org> wrote:
>
>
> On 29 April 2020 at 11:22, peter dalgaard wrote:
> | Hum, at least it is not Apple, so maybe you can attach a debugger to the running process? (gdb -p process_id or something like that --- haven't actually done it for a decade). Then at least we can get a stack trace and a clue about where it is looping. Diddling optimization options can also sometimes provide a clue.
>
> (Missed this earlier as the conversation moved off-list.)
>
> And to keep the list abreast, this appears to be related to the long double
> issue on powerpc where needed an extra #define to ensure compilation. That
> commit is the difference in a bisection as I was able to demonstrate. The
> issue can also be circumvented by disabling long double support on the
> platform, but hopefully a better fix can be found.  Bryan Lewis was
> eagle-eyed on this and very helpful. The issue is now back in the hands of R
> Core and I and others will await the news.

Which reminds me that [1] was required for v3.6.2. Could be related?

[1] https://src.fedoraproject.org/rpms/R/blob/master/f/R-3.6.2-ppc64-no-const-long-double.patch

Iñaki