[MacPorts] #67536: Is it possible to provide cmake.config file?

[MacPorts]

#67536: Is it possible to provide cmake.config file?
--------------------------+---------------------------------
 Reporter:  barracuda156  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  protobuf3-cpp, grpc
--------------------------+---------------------------------
 Upstream of `grpc` has broken finding `protobuf` in
 https://github.com/grpc/grpc/commit/303e568f275cb4d34c807af4fba0c23af7944f06
 Specifying lib and include dirs directly does not seem to work.

-- 
Ticket URL: <https://trac.macports.org/ticket/67536>
MacPorts <https://www.macports.org/>
Ports system for macOS