Introduced GOBIN variable

Makefile

@@ -5,27 +5,28 @@ DIST = out
 CROSSPREFIX=x86_64-w64-mingw32
 CROSSCC = $(CROSSPREFIX)-gcc
 CROSSCXX = $(CROSSPREFIX)-g++
+GOBIN ?= go
 
 .PHONY: all test clean
 
 all:
-	$(MAKE) -C $(SRC) unix
+	$(MAKE) -C $(SRC) GOBIN=$(GOBIN) unix
 	$(MAKE) dist
 
 headless:
-	$(MAKE) -C $(SRC) unix-headless
+	$(MAKE) -C $(SRC) GOBIN=$(GOBIN) unix-headless
 	$(MAKE) dist
 
 win64:
-	$(MAKE) -C $(SRC) win64
+	$(MAKE) -C $(SRC) GOBIN=$(GOBIN) win64
 	$(MAKE) dist
 
 win64-cross:
-	$(MAKE) -C $(SRC) CGO_ENABLED=1 CC=$(CROSSCC) CXX=$(CROSSCXX) win64
+	$(MAKE) -C $(SRC) GOBIN=$(GOBIN) CGO_ENABLED=1 CC=$(CROSSCC) CXX=$(CROSSCXX) win64
 	$(MAKE) dist
 
 win64-headless:
-	$(MAKE) -C $(SRC) win64-headless
+	$(MAKE) -C $(SRC) GOBIN=$(GOBIN) win64-headless
 	$(MAKE) dist
 
 dist:

src/Makefile

@@ -1,3 +1,4 @@
+GOBIN ?= go
 LDFLAGS = -s -w
 LDFLAGS_WIN = -H windowsgui -s -w
 GOFLAGS = -trimpath
@@ -6,20 +7,20 @@ SOURCES_GUI = $(SOURCES) gui.go
 BIN = streamgoose
 
 unix:
-	go mod tidy
+	$(GOBIN) mod tidy
-	go build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN) $(SOURCES_GUI)
+	$(GOBIN) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN) $(SOURCES_GUI)
 
 unix-headless:
-	go mod tidy
+	$(GOBIN) mod tidy
-	go build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN) $(SOURCES)
+	$(GOBIN) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN) $(SOURCES)
 
 win64:
-	go mod tidy
+	$(GOBIN) mod tidy
-	GOOS=windows GOARCH=amd64 go build $(GOFLAGS) -ldflags "$(LDFLAGS_WIN)" -o $(BIN).exe $(SOURCES_GUI)
+	GOOS=windows GOARCH=amd64 $(GOBIN) build $(GOFLAGS) -ldflags "$(LDFLAGS_WIN)" -o $(BIN).exe $(SOURCES_GUI)
 
 win64-headless:
-	go mod tidy
+	$(GOBIN) mod tidy
-	GOOS=windows GOARCH=amd64 go build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN).exe $(SOURCES)
+	GOOS=windows GOARCH=amd64 $(GOBIN) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BIN).exe $(SOURCES)
 
 clean:
 	rm $(BIN)