[MacPorts] #40226: root +cocoa build fails.

[MacPorts]

#40226: root +cocoa build fails.
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  Reporter:  david.w.watson@…  |      Owner:  jonesc@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.2.0
Resolution:                    |   Keywords:
      Port:  root              |
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Comment (by jonesc@…):

 Whilst I cannot fix a broken compiler, we can protect the ROOT port from
 opportunistically finding and using whatever 'gfortran', working or
 otherwise, the user has in their PATH when building the port. I have patch
 ready that will only enable the use of fortran if the user explicitly uses
 a compiler setting that provides one (i.e. if they use one of the gcc
 variants). Note the the bit of ROOT that still needs a fortran compiler is
 pretty insignificant these days, so this is no major lose...

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Ticket URL: <https://trac.macports.org/ticket/40226#comment:12>
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