Create a symbol link file named protoc-gen-goctl from goctl (#1076)

tools/goctl/rpc/cli/cli.go

@@ -4,22 +4,17 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
-	"runtime"
+
+	"github.com/urfave/cli"
 
 	"github.com/tal-tech/go-zero/tools/goctl/rpc/generator"
 	"github.com/tal-tech/go-zero/tools/goctl/util"
-	"github.com/tal-tech/go-zero/tools/goctl/util/env"
-	"github.com/urfave/cli"
 )
 
 // RPC is to generate rpc service code from a proto file by specifying a proto file using flag src,
 // you can specify a target folder for code generation, when the proto file has import, you can specify
 // the import search directory through the proto_path command, for specific usage, please refer to protoc -h
 func RPC(c *cli.Context) error {
-	if err := prepare(); err != nil {
-		return err
-	}
-
 	src := c.String("src")
 	out := c.String("dir")
 	style := c.String("style")
@@ -47,22 +42,6 @@ func RPC(c *cli.Context) error {
 	return g.Generate(src, out, protoImportPath, goOptions...)
 }
 
-func prepare() error {
-	if !env.CanExec() {
-		return fmt.Errorf("%s: can not start new processes using os.StartProcess or exec.Command", runtime.GOOS)
-	}
-	if _, err := env.LookUpGo(); err != nil {
-		return err
-	}
-	if _, err := env.LookUpProtoc(); err != nil {
-		return err
-	}
-	if _, err := env.LookUpProtocGenGo(); err != nil {
-		return err
-	}
-	return nil
-}
-
 // RPCNew is to generate rpc greet service, this greet service can speed
 // up your understanding of the zrpc service structure
 func RPCNew(c *cli.Context) error {