Support Apple arm64 arch

[zephyrpathsofglory]

when I run prototool generate in my Macbook pro M1 chip, it prints unsupported value for runtime.GOARCH: arm64, then I searched the repo and found this function in internal/protoc/downloader.go:

func getUnameSUnameMPaths(goos string, goarch string) (string, string, error) {
	var unameS string
	switch goos {
	case "darwin":
		unameS = "Darwin"
	case "linux":
		unameS = "Linux"
	default:
		return "", "", fmt.Errorf("unsupported value for runtime.GOOS: %v", goos)
	}
	var unameM string
	switch goarch {
	case "amd64":
		unameM = "x86_64"
	default:
		return "", "", fmt.Errorf("unsupported value for runtime.GOARCH: %v", goarch)
	}
	return unameS, unameM, nil
}

So I guess it is a bug of prototool and composed this issue to ask for some help.

[jinsuojinsuo]

The same problem

[totmaxim]

forgot about mac m1 users ?

[mehuled]

Facing the same issue, is there any workaround until this is fixed?

[hanksudo]

Facing the same issue, is there any workaround until this is fixed?

In my case, I just add arm64 to the switch. Works for me.

https://github.com/hanksudo/prototool/commit/3086a4b512489fd4bb77d4f0377a961047925bd7

[ddiaz914]

Any updates on this one?

[shettyh]

Seems like protobuf is not publishing precompiled binaries for Apple ARM machines yet. More details here https://github.com/protocolbuffers/protobuf/issues/8428

[freisenhauer]

Seems like protobuf now supports apple arm. I'd really like to use the prototool docker image on apple silicon (though that would mean linux arm, not apple arm)! Currently, with rosetta2, it's not possible to use it. qemu throws a segfault.

qemu: uncaught target signal 11 (Segmentation fault) - core dumped

[peterdemartini]

I still get the same error

[hsqds]

I was looking for solution and found this https://hub.docker.com/r/decoder89/prototool-m1/tags Works for me