[MacPorts] #55608: dar @2.5.14: error: C++ compiler lack support for c++11 standard

[MacPorts]

#55608: dar @2.5.14: error: C++ compiler lack support for c++11 standard
-------------------------+--------------------------------
  Reporter:  ryandesign  |      Owner:  ryandesign
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  mavericks yosemite
      Port:  dar         |
-------------------------+--------------------------------
Changes (by ryandesign):

 * keywords:  mavericks => mavericks yosemite


Comment:

 Same on Yosemite.

 The error is:

 {{{
 configure:21468: checking for c++11 support
 configure:21482: /usr/bin/clang++ -c -pipe -Os -stdlib=libc++ -arch x86_64
 -I/opt/local/include conftest.cpp >&5
 conftest.cpp:106:2: error: unknown type name 'thread_local'
  thread_local static int test = 0;
  ^
 conftest.cpp:106:15: error: expected unqualified-id
  thread_local static int test = 0;
               ^
 2 errors generated.
 }}}

 Thread local is available in open-source clang 3.3 and later, but Apple
 did not include it until Xcode 8 because they apparently wanted to write a
 different implementation.

 It builds on El Capitan with Xcode clang 800.0.42.1.

 It also builds on Mountain Lion with MacPorts clang 5.

-- 
Ticket URL: <https://trac.macports.org/ticket/55608#comment:1>
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