Add Makefile

Makefile

@@ -0,0 +1,27 @@
+go_sources   := $(shell find cmd encoding gen genid version wasm -name "*.go")
+
+.PHONY: build
+build: $(GOPATH)/bin/protoc-gen-go-plugin
+
+$(GOPATH)/bin/protoc-gen-go-plugin: $(go_sources)
+	go build -o $(GOPATH)/bin/protoc-gen-go-plugin cmd/protoc-gen-go-plugin/main.go
+
+tinygo_examples := $(shell find examples -path "*/plugin*/*.go")
+.PHONY: build.examples
+build.examples: $(tinygo_examples:.go=.wasm)
+
+%.wasm: %.go
+	tinygo build -o $@ -scheduler=none --no-debug --target=wasi $<
+
+proto_files := $(shell find . -name "*.proto")
+.PHONY: protoc
+protoc: $(proto_files:.proto=.pb.go) $(proto_files:.proto=_vtproto.pb.go)
+
+%.pb.go: %.proto $(GOPATH)/bin/protoc-gen-go-plugin
+	protoc --go-plugin_out=. --go-plugin_opt=paths=source_relative $<;
+
+.PHONY: fmt
+fmt: $(proto_files)
+	@for f in $^; do \
+		clang-format -i $$f; \
+	done