[CMake] CMake 3.11 Fortran submodule parallel compilation fails for a single target

[Brad King]

On 04/11/2018 01:44 PM, Zaak Beekman wrote:
> I thought that CMake had Fortran submodule support as of 3.8 or 3.10.

CMake 3.7 added support to the Fortran dependency scanner to tolerate
the *syntax* of submodules.  Only the main modules are handled for
dependencies though.

Unfortunately we still don't support the actual `.smod` dependencies.
See also:

  https://gitlab.kitware.com/cmake/cmake/issues/17017

-Brad