Bug#1102465: petsc: PETSc was configured with one MPICH/Open MPI mpi.h version but now appears to be compiling using an older version

[Drew Parsons]

Source: petsc
Followup-For: Bug #1102465
Control: forwarded -1 https://gitlab.com/petsc/petsc/-/work_items/1881

For further reference and further discussion, and to understand
upstream's reasons for the version checks, I raised the question
upstream at

https://gitlab.com/petsc/petsc/-/work_items/1881