gold linker conflicts with mpicxx
As I was trying to compile with mpicxx to see it it solves [1] I found that gold linker was conflicting with mpicxx, and that's breaking cmake [2].
I'll keep trying mpicxx and report here. Compiling mpi applications with mpicxx is highly recommended anyway.
[2] https://github.com/dealii/dealii/issues/2820#issuecomment-232329108
EDIT: mpicxx runs smoothly but it does not fix the conflicting mpi versions. The added value for the pipeline is negative since gold linker has to be turned off... I reverted the change.
Edited by bchareyre