Add future ability to test ifx in CI

[mathomp4]

Types of change(s)

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Trivial change (affects only documentation or cleanup)
• Refactor (no functional changes, no api changes)

Checklist

• Tested this change with a run of GEOSgcm
• Ran the Unit Tests (make tests)

Description

This is an update to CI to eventually allow the ability to add ifx. At the moment ifx does not run the MAPL tests (though it can build), it can build GEOSgcm but not run it, and it just cannot build GEOSldas (due to missing HDF4 Fortran headers, see GEOS-ESM/GEOSldas_GridComp#55).

Related Issue

[mathomp4]

Oh yeah. ifx + MAPL means test failures at the moment. See:

https://app.circleci.com/pipelines/github/GEOS-ESM/MAPL/9508/workflows/69823f8f-67cf-4525-a489-5a4adfd828aa/jobs/78296

Perhaps if I can work with @tclune to fix the MAPL.base.tests failure, we'd solve the ExtData2G_case24 case fail as well?

[tclune]

Hmm. That crash is basically in a bit of code that is extracting a C address of an array. The problem must be farther upstream. Also interesting that the stacktrace itself is missing the intermediary lines between GriddedIO and CubedSphereGridFactory.

Quite possibly a compiler bug, but has enough noise that it could also be some latent uninitialized thingo(TM) in our code.