[MacPorts] #49709: cmake, gnuradio, gr-foo, gr-ieee802-11, gr-ieee802-15-4, volk: just use cxx11 1.0 portgroup

[MacPorts]

#49709: cmake, gnuradio, gr-foo, gr-ieee802-11, gr-ieee802-15-4, volk: just use
cxx11 1.0 portgroup
-------------------------------------------------+-------------------------
  Reporter:  ryandesign@…                        |      Owner:  michaelld@…
      Type:  defect                              |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.3.4
Resolution:                                      |   Keywords:  haspatch
      Port:  cmake gnuradio gr-foo gr-           |
  ieee802-11 gr-ieee802-15-4 volk                |
-------------------------------------------------+-------------------------

Comment (by mojca@…):

 A tiny note about CMake.

 This change might conflict with
 {{{
 platform darwin {
     # TODO: Figure out why using libc++ fails on Lion and fix the
 bootstrap
     #       script to honor CMAKE_OSX_SYSROOT and
 CMAKE_OSX_DEPLOYMENT_TARGET.
     #       Since nothing links against cmake and cmake is just using the
 STL,
     #       we're safe to force libstdc++
     #
     #       https://www.cmake.org/Bug/view.php?id=15039&nbn=16
     if {${os.major} < 12} {
         configure.cxx_stdlib libstdc++
     }
 }
 }}}

 Note that `libstdc++` is not really needed, but due to a bug in `clang`
 shipped with Lion one cannot use the system `clang++` with `libc++`. Just
 make sure that if `libc++` is used, `clang 425` gets blacklisted and
 replaced by `macports-clang-3.4` or later.

-- 
Ticket URL: <https://trac.macports.org/ticket/49709#comment:3>
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