'protoc-gen-go: unable to determine Go import path for "simple.proto"

I have simple proto file with following content.

syntax="proto3";

package main;

message Person {
      string name = 1;
      int32 age = 2; 
}

I am trying to generate go code for it using protoc. I run:

protoc --go_out=. simple.proto

I receive following error:

protoc-gen-go: unable to determine Go import path for "simple.proto"

Please specify either:
        • a "go_package" option in the .proto source file, or
        • a "M" argument on the command line.

main.go, go.mod and simple.proto is in the same folder. Both protoc and protoc-gen-go are defined in PATH enviroement.

go protocol-buffers protoc

Solution 1:^[1]

You are missing option go_package.

The name you will give to option go_package will be the name of the package that will be generated by the protoc. By doing so, you can import thus access message fields.

Solution 2:^[2]

You forgot to linkedlist the file with it by adding:

option go_package = "./";

You need to linkedlist it first to make it work. It was same issues here

Solution 3:^[3]

Protoc requires that the package be specified, then the solution is to add

option go_package = "./your-package-name";

to make your file looks like the following:

syntax="proto3";

package main;

option go_package = "./your-package-name";

message Person {
      string name = 1;
      int32 age = 2; 
}

then you can run the command e.g:

protoc -I src/ --go_out=src/ src/simple/simple.proto

where --go_out=src/ specifies where your file will be generated then the relative path to your proto file.

Note: Don't forget to prefix the option go_package with ./

Solution 4:^[4]

I have a similar problem.

I thought protocol buffers were supposed to be language neutral. If we are adding go_package to the proto files, then if we try to compile these proto files to a different language, we will have to make changes to the files.

The solutions I have seen works if you are looking at generating only go files.

Solution 5:^[5]

first make sure you installed compiler correctly

sudo apt install protobuf-compiler
sudo apt install golang-goprotobuf-dev

use this command

protoc -I=src/ --go_out=src/ src/simple.proto

-I = IPATH -Specify the directory in which to search for imports
--go_out= output directory

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	blockByblock
Solution 2	Panji Tri Wahyudi
Solution 3
Solution 4	Future Man
Solution 5

'protoc-gen-go: unable to determine Go import path for "simple.proto"

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]