[MacPorts] #56113: libvpx @1.7.0: Toolchain is unable to link executables

[MacPorts]

#56113: libvpx @1.7.0: Toolchain is unable to link executables
----------------------+----------------------
  Reporter:  korseby  |      Owner:  dbevans
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.4.2
Resolution:           |   Keywords:
      Port:  libvpx   |
----------------------+----------------------

Comment (by kencu):

 It would appear you may have run into this bug: [ticket:53784].

 WHY you are running into this is less clear, but for some reason I notice
 your port is trying to build with macports-clang-3.9 instead of the Xcode
 version.

 The recommended fix by the MacPorts guru is to do this:
 {{{
 sudo port -v install ld64 +ld64_xcode
 }}}

 By the way, I see you have installed MacPorts into a custom prefix, `/opt`
 instead of `/opt/local`. Certainly your option to do that, but in doing
 so, you are missing out on all the premade binaries that MacPorts offers,
 that are set up for a prefix of `/opt/local`. Something to ponder.

--
Ticket URL: <https://trac.macports.org/ticket/56113#comment:4>
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