[MacPorts] #50448: Change filenames of binary packages built against libc++ on < 10.9

[MacPorts]

#50448: Change filenames of binary packages built against libc++ on < 10.9
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  Reporter:  mojca        |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  High         |  Milestone:
 Component:  base         |    Version:  2.4.0
Resolution:               |   Keywords:
      Port:               |
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Comment (by kencu):

 Better that than start stealth-linking to libgcc's libstdc++ behind the
 scenes on the current old build systems, which is the other option on the
 table that has a chance of moving forward.

 That is interesting, but in the end, I believe will wind up causing lots
 of troubles as ports try to start building against that standard library
 instead of libc++ -- and maintainers lose enthusiasm for trying to support
 two standard library systems.

 I think that road leads to dropping support for <10.9 completely, (we
 already hear that quite often), which is way worse than moving to libc++.

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Ticket URL: <https://trac.macports.org/ticket/50448#comment:14>
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