CFITSIO's Fortran interface

[Sébastien Maret]

Hello,

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?

Thanks in advance for your help.
Sébastien