[MacPorts] #61242: f2c: fix compilation

[MacPorts]

#61242: f2c: fix compilation
---------------------+--------------------
 Reporter:  DanielO  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  f2c
---------------------+--------------------
 f2c is ancient and terrible C code, so just disable all warnings while
 building it.

-- 
Ticket URL: <https://trac.macports.org/ticket/61242>
MacPorts <https://www.macports.org/>
Ports system for macOS