Bug#981128: libgmsh4: SIGABRT in dolfinx demo from gmsh polynomialBasis via Eigen::compute_inverse

[Drew Parsons]

On 2021-02-14 12:00, Drew Parsons wrote:
> 
> Curiously, my system now gives a completely different gmsh error (gmsh
> 4.7.1+ds1-2).
> gmsh itself is broken:
> 
> $ gmsh
> gmsh: symbol lookup error: /lib/x86_64-linux-gnu/libgmsh.so.4.7:
> undefined symbol: _ZN4voro20voronoicell_neighborC1Ev

That problem is reported, Bug#982616.

As far as dolfinx and eigen alignment goes, dolfinx upstream has decided 
the best way to work around the problem is to remove eigen from 
dolfinx's public interfaces, 
https://github.com/FEniCS/dolfinx/issues/1381 (superseding 
https://github.com/FEniCS/dolfinx/issues/1277)

But Debian is now in freeze and those upstream changes in dolfinx are 
not fully completed and tested yet. bullseye might have to miss out.

But if we can add Bernhard's eigen path to the gmsh build then that will 
remove one axis of inconsistency.

Drew