[MacPorts] #64563: MyPaint @2.0.1: fatal error: 'future' file not found on 10.7/10.8

[MacPorts]

#64563: MyPaint @2.0.1: fatal error: 'future' file not found on 10.7/10.8
-------------------------+-------------------------------
  Reporter:  evanmiller  |      Owner:  ryandesign
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.1
Resolution:  fixed       |   Keywords:  lion mountainlion
      Port:  MyPaint     |
-------------------------+-------------------------------

Comment (by ryandesign):

 Replying to [comment:5 evanmiller]:
 > Is MacPorts mistaken about the system clang's C++11 support?

 I don't think so. With a small test program that includes `<future>`, I am
 able to reproduce the error if I do not use `-stdlib=libc++`, and when I
 do use `-stdlib=libc++` then the problem goes away. This tells us that the
 build is not using this flag, even though it should.

 It is difficult to tell for sure what the build is doing because the build
 system uses silent rules and I do not know how to make it use verbose
 rules. I do not know enough about python build systems to know if that is
 even possible. Without this, I cannot know for certain which compiler is
 actually being used or with which arguments it is being run.

-- 
Ticket URL: <https://trac.macports.org/ticket/64563#comment:6>
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