[MacPorts] #49449: pymol: error: no type named 'shared_ptr' in namespace 'std'

[MacPorts]

#49449: pymol: error: no type named 'shared_ptr' in namespace 'std'
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  Reporter:  kathryn.cole@…  |      Owner:  howarth.at.macports@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.4
Resolution:                  |   Keywords:
      Port:  pymol           |
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Comment (by howarth.at.macports@…):

 Upstream is recommending that we build pymol svn with -stdlib=libc++
 passed on CXXFLAGS on 10.7/10.8 (which means that 10.6 and earlier won't
 be able to build pymol unless we use la recent lvm.org clang/libc++). This
 happens to work at the moment because 1) python isn't built against c++ so
 there is no ABI issues and 2) pymol currently doesn't directly link to any
 code built with c++. IMHO, this is a bit fragile in the long run but will
 work for now on 10.7/10.8.

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Ticket URL: <https://trac.macports.org/ticket/49449#comment:7>
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