[MacPorts] #51844: qt4-mac link error lc++ not found

[MacPorts]

#51844: qt4-mac link error lc++ not found
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  Reporter:  kenneth.f.cunningham@…  |      Owner:  michaelld@…
      Type:  defect                  |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  ports                   |    Version:  2.3.4
Resolution:                          |   Keywords:  haspatch
      Port:  qt4-mac                 |
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Comment (by ken.cunningham.webuse@…):

 Thanks. Trying very very hard not to break anything! Works for me on
 several machines.

 the best test for Libc++OnOlderSystems we could come up with on the
 mailing list was to test the macports.conf setting below in Darwin 9 and
 10 (and 11 and 12, perhaps, as they default to libstdc++, but they don't
 need so much massaging as they have libc++ there by default anyway). That
 part I'm not as sure about, and leave that to Jeremy, who so far says only
 9 & 10 need this, and runs country miles around my understanding of
 things.

 if {${configure.cxx_stdlib} eq "libc++"}

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Ticket URL: <https://trac.macports.org/ticket/51844#comment:16>
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