[MacPorts] #55834: LibreCAD: g++-mp-4.8: error: unrecognized command line option '-arch'

[MacPorts]

#55834: LibreCAD: g++-mp-4.8: error: unrecognized command line option '-arch'
------------------------+------------------------
 Reporter:  ryandesign  |      Owner:  librecad@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  LibreCAD
------------------------+------------------------
 LibreCAD fails to build on OS X 10.8 and earlier with:

 {{{
 g++-mp-4.8: error: unrecognized command line option '-arch'
 }}}

 What is going on here? Why does the port force the use of gcc48 on 10.8
 and earlier? That's super strange.

 I see the build uses `-std=c++11`. If the use of gcc48 was an attempt to
 provide a C++11-compatible compiler, please just include the cxx11-1.1
 portgroup and let it handle these details.

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Ticket URL: <https://trac.macports.org/ticket/55834>
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