[MacPorts] #57093: caffe update fails after protobuf3 upgrade

[MacPorts]

#57093: caffe update fails after protobuf3 upgrade
-----------------------+--------------------
  Reporter:  jwhowse4  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.5.3
Resolution:            |   Keywords:
      Port:  caffe     |
-----------------------+--------------------

Comment (by kencu):

 in essence, we need to get `-std=c++11` onto each CXX build line, and hope
 for no conflicts with the caffe code.

 In practice, so far, this is proving to be rather difficult.

-- 
Ticket URL: <https://trac.macports.org/ticket/57093#comment:1>
MacPorts <https://www.macports.org/>
Ports system for macOS