[MacPorts] #38938: Update cadabra and modglue

[MacPorts]

#38938: Update cadabra and modglue
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  Reporter:  kasper.peeters@…  |      Owner:  gwright@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:
Resolution:                    |   Keywords:
      Port:  cadabra modglue   |
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Comment (by kasper.peeters@…):

 Note: cadabra needs a relatively new gcc, and I probably used a bit of a
 hack to force it to pick Apple's gcc-4.2. Neither clang nor llvm produce
 working code (for clang because of unsupported c++ features, for llvm I am
 not sure why). Building with a non-Apple gcc made the code link to two
 different libstdc++ versions at the same time, leading to malloc errors.

 If there is a clean way to enforce building with the Apple gcc that makes
 it pick up precisely the version of libstdc++ to which all other Macports
 libraries are linked, without enforcing a specific version like I did,
 feel free to modify the Portfile.

-- 
Ticket URL: <https://trac.macports.org/ticket/38938#comment:3>
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