[MacPorts] #46517: octave-tsa @4.2.7 needs gcc dependency

[MacPorts]

#46517: octave-tsa @4.2.7 needs gcc dependency
--------------------------+----------------------------
 Reporter:  ryandesign@…  |      Owner:  mschamschula@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.3
 Keywords:                |       Port:  octave-tsa
--------------------------+----------------------------
 octave-tsa @4.2.7 fails to build on all buildbot builders because:

 {{{
 INCFLAGS="-I/opt/local/include/octave-3.8.2/octave/..
 -I/opt/local/include/octave-3.8.2/octave -I/opt/local/include -include
 cstdlib" mkoctfile --mex covm_mex.cpp -L/opt/local/lib
 -L/opt/local/lib/gcc49/gcc/x86_64-apple-darwin11/4.9.2
 -L/opt/local/lib/gcc49/gcc/x86_64-apple-darwin11/4.9.2/../../.. -lgfortran
 -lquadmath -lm -lgomp     ## Octave
 ld: warning: directory not found for option
 '-L/opt/local/lib/gcc49/gcc/x86_64-apple-darwin11/4.9.2'
 ld: warning: directory not found for option
 '-L/opt/local/lib/gcc49/gcc/x86_64-apple-darwin11/4.9.2/../../..'
 ld: library not found for -lgfortran
 }}}

 It sounds like octave-tsa has a dependency on whatever version of gcc
 octave was built with. You may need to add gcc variants to octave-tsa
 (possibly using the compilers 1.0 portgroup), and use the
 `require_active_variants` procedure in the active_variants 1.1 portgroup
 to ensure that the selected variant matches the one selected for octave.

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Ticket URL: <https://trac.macports.org/ticket/46517>
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