[CMake] Fortran 9x dependencies

[Brad King]

Warren Turkal wrote:
> Is there a way to override the mechanism for finding dependencies?

No.

> I am trying to work around the crappy support for preprocessed Fortran
> dependency generation. See bug #2361 [1].

Unfortunately we do not have time to solve this problem ourselves right
now.  Your time would probably be best spent on one of the following
CMake changes:

1.)  Re-implement the dependency scanner to do full preprocessing.
2.)  Add a way to override the dependency scanner with a custom
invocation that provides module dependencies and file dependencies in
its output.

We can help you get started if you want to try one of these (I prefer #1).

Fortran module dependencies require a "provides/requires" style of
generated dependencies.  This is implemented in the Makefile generator
in CMake, so somehow the dependency scanning does need to provide
module-level dependencies independently from file-level dependencies
(#include).

-Brad