[MacPorts] #20103: Use a common default variant for a recent gcc port in scientific packages

[MacPorts]

#20103: Use a common default variant for a recent gcc port in scientific packages
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 Reporter:  alakazam@…             |       Owner:  macports-tickets@…                   
     Type:  update                 |      Status:  new                                  
 Priority:  Normal                 |   Milestone:                                       
Component:  ports                  |     Version:  1.7.1                                
 Keywords:                         |        Port:  octave arpack                        
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Comment(by takeshi@…):

 Replying to [comment:6 takeshi@…]:
 > OK. I will make gcc43 the default variant and make g95 a variant, where
 possible.
 I tried to use gcc43 (gfortran) as suggested but not completely
 successful.
 We do need g95 :-).

 > I need to update gcc42 to gcc43 fo adaptor.
 > Better to rename gfortran to gcc43 in hdf4.
 Done.

 > I have to swap roles between gcc43 and g95 for fgsl.
 Not successful since gfortran does not support complex(c_double).

 > I need to add gcc43 variant for udunits.
 udunits does not seem to require a fortran compiler at build time.
 gfortran does not work since it seem to have a problem with preprocessor
 (-traditional-cpp).

 > Here is an exception: vis5d+ fails to build with gcc43.
 I left as it is.

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Ticket URL: <http://trac.macports.org/ticket/20103#comment:8>
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