Merge pull request #30 from hikhvar/allow-alternative-go-binary

Don't hardcode go binary path in makefile

Makefile

@@ -1,21 +1,25 @@
+ifndef GOBINARY
+  GOBINARY:="go"
+endif
+
 ifndef GOPATH
-  GOPATH:=$(shell go env GOPATH)
+  GOPATH:=$(shell $(GOBINARY) env GOPATH)
 endif
 
 ifndef GOBIN
   GOBIN:=$(GOPATH)/bin
 endif
 
 ifndef GOARCH
-  GOARCH:=$(shell go env GOARCH)
+  GOARCH:=$(shell $(GOBINARY) env GOARCH)
 endif
 
 ifndef GOOS
-  GOOS:=$(shell go env GOOS)
+  GOOS:=$(shell $(GOBINARY) env GOOS)
 endif
 
 ifndef GOARM
-  GOARM:=$(shell go env GOARM)
+  GOARM:=$(shell $(GOBINARY) env GOARM)
 endif
 
 ifndef TARGET_FILE
@@ -31,14 +35,14 @@ lint:
 	golangci-lint run
 
 test:
-	go test ./...
-	go vet ./...
+	$(GOBINARY) test ./...
+	$(GOBINARY) vet ./...
 
 build:
-	GOOS=$(GOOS) GOARCH=$(GOARCH) go build -o $(TARGET_FILE) ./cmd
+	GOOS=$(GOOS) GOARCH=$(GOARCH) $(GOBINARY) build -o $(TARGET_FILE) ./cmd
 
 static_build:
-	CGO_ENABLED=0 GOOS=$(GOOS) GOARCH=$(GOARCH) go build -o $(TARGET_FILE) -a -tags netgo -ldflags '-w -extldflags "-static"' ./cmd
+	CGO_ENABLED=0 GOOS=$(GOOS) GOARCH=$(GOARCH) $(GOBINARY) build -o $(TARGET_FILE) -a -tags netgo -ldflags '-w -extldflags "-static"' ./cmd
 
 container:
 	docker build -t mqtt2prometheus:latest .