[bug#62842] [PATCH 00/11] gnu: maths: dune-*: Update to version 2.9.0

[Felix Gruber]

Hi Ludo’,

On 5/2/23 15:01, Ludovic Courtès wrote:
> Felix Gruber <felgru@posteo.net> skribis:
>
> > This patchset updates all packages belonging to the Dune finite element
> > library to the latest release 2.9.0.
>
> There’s one test failure on aarch64-linux:
>
> --8<---------------cut here---------------start------------->8---
>   99/106 Test  #99: eigenvaluestest ........................Subprocess 
> aborted***Exception:   1.24 sec
> Eigenvalues of Rosser matrix: (-1020.05,0) (0.0980486,0) (-1.05342e-14,0) 
> (1020.05,0) (1020,0) (1019.9,0) (1000,0) (1000,0)
> Eigenvalues of Rosser matrix: (-1020.05,0) (0.0980486,0) (-1.05342e-14,0) 
> (1020.05,0) (1020,0) (1019.9,0) (1000,0) (1000,0)
> Eigenvalues of Rosser matrix: (-1020.05,0) (0.0980486,0) (-1.05342e-14,0) 
> (1020.05,0) (1020,0) (1019.9,0) (1000,0) (1000,0)
> terminate called after throwing an instance of 'Dune::MathError'
>    what():  MathError 
> [testSymmetricFieldMatrix:/tmp/guix-build-dune-common-2.9.0.drv-0/dune-common-2.9.0/dune/common/test/eigenvaluestest.cc:143]:
>  Vector computed by FMatrixHelp::eigenValuesVectors is not an eigenvector
>
> […]
> The following tests FAILED:
>          99 - eigenvaluestest (Subprocess aborted)
> Errors while running CTest
> make: *** [Makefile:74: test] Error 8
> --8<---------------cut here---------------end--------------->8---
>
>  From <https://ci.guix.gnu.org/build/1228281/details>.
>
> Could you take a look and/or report it upstream?

Thanks for letting me know. I've looked into upstream issues/fixes for 
this problem and it seems that these aarch64 test failures are a known 
issue [1]. This bugreport mentions build failures in dune-common's 
Debian package, which nowadays seems to be patched to disable the 
failing tests [2].

[1]: https://gitlab.dune-project.org/core/dune-common/-/issues/262
[2]: 
https://sources.debian.org/src/dune-common/2.9.0-2/debian/patches/disable-long-double-eigenvalue-checks.patch/

I've prepared a patch to apply Debian's patch for disabling the failing 
tests to our dune-common package. You can find it attached to this 
email. Can you test if it fixes the aarch64-linux builds (I don't have 
access to an aarch64 machine)?
I hope that this would also fix the build failures for the other dune-* 
packages on aarch64-linux, which are currently all failing because they 
depend on the broken dune-common package.

Kind regards,
Felix

0001-gnu-dune-common-Fix-build-on-aarch64-linux.patch
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