[R-sig-Debian] R 3.6.0 for Debian buster

[Dirk Eddelbuettel]

On 10 May 2019 at 10:52, Johannes Ranke wrote:
| Thanks, that sounds good. But I need some help as I do not know much about 
| autoconf and Debian packaging: Is it enough to patch configure.ac (r76467) or 
| do we need to update configure as well (r76468)?

Again, that would happen in the sources you pick up from me, and per

part1 https://github.com/wch/r-source/commit/d60792d3f404cc970ab33ebee1d4481a770ec15c
part2 https://github.com/wch/r-source/commit/05046138c6fa9b40b9676f6b67498d74281d5030

it only affects gfortran >= 7, and my Debian stable fileserver shows gcc
still the default so no rush.
 
| > In principle I think all Fortran BLAS/LAPACK implementations (refblas
| > and ATLAS) packaged for buster should be recompiled with
| > -fno-optimize-sibling-calls (they may be fine in case they were compiled
| > with older version of gfortran-8, but then the next rebuild will cause
| > trouble): Dirk, any chance you could get the package maintainers to make
| > these changes?
| 
| It seems to me this is of relevance for for Sébastien (Ccing), or more 
| generally for debian-science.

Not really. I do not think anybody concluded our LAPACK/BLAS needed to be
recompiled.  The discussion about this has been going on for a few weeks and
is now also between gcc/gfortran upstream and the lapack folks. See Tomas's
posts on (IIRC) r-devel.

So in short, things are moving, and in the right direction. Also worth
recalling that the _initial findings_ were and still are about a gcc /
gfortran version _not even in Debian unstable yet_ (but the folks in Fedora
once again jumped the gun and they now have that problem with gfortran 9).

Dirk

-- 
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