Support batch generation with import

[alx696]

Is your feature request related to a problem? Please describe.
son.proto import father.proto from different go_package but same dir. Cant execute protoc:

x@x-ThinkPad-T460:~/go/src/lilu.red/proto$ protoc --go_out=plugins=grpc:$GOPATH/src *.proto
2019/01/18 15:32:06 protoc-gen-go: error:inconsistent package import paths: "lilu.red/proto/father", "lilu.red/proto/son"
--go_out: protoc-gen-go: Plugin failed with status code 1.

Must protoc one by one manual:

x@x-ThinkPad-T460:~/go/src/lilu.red/proto$ protoc --go_out=plugins=grpc:$GOPATH/src father.proto
x@x-ThinkPad-T460:~/go/src/lilu.red/proto$ protoc --go_out=plugins=grpc:$GOPATH/src son.proto

If lots of proto, not good any more. I can protoc son.proto first, no error alert. Imply no required check, why alert error:inconsistent package import paths?

Describe the solution you'd like
Batch generation with one protoc:

$ protoc --go_out=plugins=grpc:$GOPATH/src *.proto

Describe alternatives you've considered
Automatically generated one by one.

Additional context
father.proto

syntax = "proto3";

package auto.grpc.father;
option go_package = "lilu.red/proto/father";

message Info {
  string name = 1;
}

son.proto

syntax = "proto3";

package auto.grpc.son;
option go_package = "lilu.red/proto/son";

import "father.proto";

service SonService {
  rpc Insert (Info) returns (Info) {
  }
}

message Info {
  string id = 1; //auto set
  string name = 2;
  father.Info father = 3;
}

[lpflpf]

I had the same question, have you solved it?

[alx696]

@lpflpf No...

[dsnet]

Duplicate of #39