[MacPorts] #45287: OpenSceneGraph build against libstdc++ (should be libc++)

[MacPorts]

#45287: OpenSceneGraph build against libstdc++ (should be libc++)
-----------------------------+--------------------------------
  Reporter:  hartmut@…       |      Owner:  macports-tickets@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.1
Resolution:                  |   Keywords:
      Port:  OpenSceneGraph  |
-----------------------------+--------------------------------

Comment (by mmoll@…):

 If I comment out these lines everything still compiles fine:
 {{{
 set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++98")
 set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libstdc++")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98 -stdlib=libstdc++ -Wno-
 overloaded-virtual -Wno-conversion")
 }}}
 Is there any downside to this? With the port as it is now, I'm having some
 trouble compiling some other code that depends on OpenSceneGraph and
 various other libraries. Somehow, linking against both libstdc++ and
 libc++ doesn't seem to work well.

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Ticket URL: <https://trac.macports.org/ticket/45287#comment:4>
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