Bug#961725: libopenblas-dev: On some cpus, openmp and pthread dead-lock

[Dirk Eddelbuettel]

On 30 May 2020 at 15:09, Graham Inggs wrote:
| Hi
| 
| I was able to reproduce this in Ubuntu 20.04 on i7-2600 with the
|     Rscript -e "example(solve)"
| test case.  Rebuilding with
|     export DEB_LDFLAGS_MAINT_STRIP="-Wl,-Bsymbolic-functions"
| in debian/rules solved it for me.
| 
| On Sat, 30 May 2020 at 09:15, Sébastien Villemot <sebastien at debian.org> wrote:
| > Just one question: did you try to rebuild it from source without
| > changing anything? Maybe it’s just the rebuild that fixed it, and not
| > the flag change.
| 
| I confirm that a no-change rebuild had no effect.
| 
| I suspect this is the same problem that was discovered in LP: #1860601
| [1], but I was unable to reproduce it locally.
| I'll take care of fixing this in Ubuntu Groovy and SRU for Ubuntu Focal.

Lovely!  I was wondering how we could possibly reach out and get to someone!

Dirk

| Could we get this fixed in Debian?  At worst, it should be a no-op in
| Debian, and should someone try rebuilding locally with -Bsymbolic-
| functions they won't fall into this trap.
| 
| Regards
| Graham
| 
| 
| [1] https://pad.lv/1860601

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org