proto grror when generating gateway protoc-gen-grpc-gateway: program not found or is not executable - grpc

Question

I have found similar posts but they are rather old and they sadly did not solve my issue.
I am trying to add a Gateway for my GoLang GRPC services
PROJ_PATH=${CURDIR}
.PHONY: proto
proto: ## Generate protobuf code
# Compile proto files inside the project.
protoc api.proto --proto_path=${PROJ_PATH}/proto --go_out=. --go-grpc_out=. \
--grpc-gateway_out . \
--grpc-gateway_opt generate_unbound_methods=true \
--openapiv2_out . \
--openapiv2_opt logtostderr=true \
--openapiv2_opt generate_unbound_methods=true
I add the two dependencies
go get github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway
go get github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2
But I still get his error
protoc-gen-grpc-gateway: program not found or is not executable
Please specify a program using absolute path or make sure the program is available in your PATH system variable
--grpc-gateway_out: protoc-gen-grpc-gateway: Plugin failed with status code 1.
make: *** [proto] Error 1
I had to remove the import and gateway options in the GRPC file because this error so it looks like I have the wrong plugin but reading here tells me otherwise.
google/api/annotations.proto: File not found.
api.proto:5:1: Import "google/api/annotations.proto" was not found or had errors.
make: *** [proto] Error 1
syntax = "proto3";
option go_package = "pkg/api";
import "google/api/annotations.proto"; <---- had to remove
service ApiService {
rpc Test(TestRequest) returns (TestResponse){
option (google.api.http) = { <---- had to remove
get: "/v1/test"
body: "*"
};
}
}
Any advice would be greatly appreciated.
---- solved with ------
go install \
github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway#latest \
github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2#latest
then add the path to the proto command
--plugin=protoc-gen-grpc-gateway=${GOPATH}/bin/protoc-gen-grpc-gateway \
full command...
protoc api.proto --proto_path=${PROJ_PATH}/proto --go_out=. --go-grpc_out=. \
--grpc-gateway_out . \
--grpc-gateway_opt generate_unbound_methods=true \
--plugin=protoc-gen-grpc-gateway=${GOPATH}/bin/protoc-gen-grpc-gateway \
--openapiv2_out . \
--openapiv2_opt logtostderr=true \
--openapiv2_opt generate_unbound_methods=true

Answer 1

I had to install the binary like so
go install \
github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway#latest \
github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2#latest
Then update the proto command with the path.
--plugin=protoc-gen-grpc-gateway=${GOPATH}/bin/protoc-gen-grpc-gateway \
Full proto command
PROJ_PATH=${CURDIR}
.PHONY: proto
proto: ## Generate protobuf code
# Compile proto files inside the project.
protoc api.proto --proto_path=${PROJ_PATH}/proto --go_out=. --go-grpc_out=. \
--grpc-gateway_out . \
--grpc-gateway_opt generate_unbound_methods=true \
--plugin=protoc-gen-grpc-gateway=${GOPATH}/bin/protoc-gen-grpc-gateway \
--openapiv2_out . \
--openapiv2_opt logtostderr=true \
--openapiv2_opt generate_unbound_methods=true