Add Makefile

.gitignore

@@ -0,0 +1,2 @@
+go.mod
+go.sum

Makefile

@@ -0,0 +1,16 @@
+V4_SRC = $(shell find ./v4 -type f -name '*.go' -not -path "./v4/vendor/*")
+V3_SRC = $(shell find ./v3 -type f -name '*.go')
+
+default: build
+
+build: checks
+	go install ./v3
+	go install ./v4
+
+checks: fmt-check
+
+fmt-check:
+	@test -z "$(shell gofmt -l $(V3_SRC) | tee /dev/stderr)" || echo "[WARN] Fix formatting issues in ./v3 with 'make fmt'"
+	@test -z "$(shell gofmt -l $(V4_SRC) | tee /dev/stderr)" || echo "[WARN] Fix formatting issues in ./v4 with 'make fmt'"
+
+.PHONY: build checks fmt-check