CFITSIO's Fortran interface

[Ryan Schmidt]

On Feb 10, 2016, at 8:52 AM, Sébastien Maret wrote:

> I am maintaining the Gildas port which depends on the CFITSIO library. CFITSIO has a Fortran interface but it is not built by default: one need to select a specific variant (e.g. +gcc 5) for this. This is a problem for the Gildas because the compilation fails without the Fortran interface:
> https://trac.macports.org/ticket/50543
> 
> Is there a way for a port to depend on a specific variant of another port? If not then how can I solve this?

The require_active_variants procedure in the active_variants 1.1 portgroup.