[MacPorts] #38938: Update cadabra and modglue

[MacPorts]

#38938: Update cadabra and modglue
-------------------------------+-----------------------
  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 larryv@…):

 Replying to [comment:5 kasper.peeters@…]:
 > I have gcc-4.2 here as well, but if I remember correctly that also
 > produced the double-libstdc++ problem.

 Let’s make sure we’re talking about the same things. As far as MacPorts
 compiler specifications are concerned, `gcc-4.2` refers to Apple’s custom
 GCC 4.2 included with Xcode. Apple’s custom GCC 4.2 provided by MacPorts’s
 `apple-gcc42` port is referred to as `apple-gcc-4.2`. FSF GCC 4.2 provided
 by the MacPorts `gcc42` port is referred to as `macports-gcc-4.2`.

 I see no reason why `gcc-4.2` should compile your software differently
 than `apple-gcc-4.2`. They are more or less the same software.

 > So my question is really: how do I restrict to apple-gcc without
 > restricting to a specific version?

 The only versions of Apple’s GCC are 4.0 and 4.2; there are no newer ones,
 and there never will be. So I think the real question is, how do we (or
 you) fix your build process so that it does not link to multiple libstdc++
 implementations?

 > (It took me quite some time to pin this down. It may thus be a good
 > idea to discuss this problem somewhere more prominently on the
 > Macports pages that discuss compiler choices, as I am apparently not
 > the only one puzzled by these weird malloc errors. In general, as soon
 > as you start excluding the default C++ compiler, all hell breaks
 > loose...).

 You may want to post a message to the [[MailingLists|macports-dev]]
 mailing list.

-- 
Ticket URL: <https://trac.macports.org/ticket/38938#comment:6>
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