Updated the build script to build all versions

Makefile

@@ -2,17 +2,15 @@ include .env
 export
 
 APP_NAME := export-komoot
-GO := go
-
 REVISION := $(shell git rev-parse --short HEAD)
 BRANCH := $(shell git rev-parse --abbrev-ref HEAD | tr -d '\040\011\012\015\n')
-LDFLAGS := "-s -w -X $(PACKAGE).GitRevision=$(REVISION) -X $(PACKAGE).GitBranch=$(BRANCH)"
+BUILD_CMD := go build -buildvcs -ldflags "-s -w -X $(PACKAGE).GitRevision=$(REVISION) -X $(PACKAGE).GitBranch=$(BRANCH)" -trimpath
 
 init:
 	@go mod download
 
 build: init
-	@$(GO) build -v -ldflags $(LDFLAGS) -o $(APP_NAME)
+	$(call build-binary)
 
 test:
 	@$(GO) test -cover `go list ./... | grep -v cmd`
@@ -28,3 +26,45 @@ run-filter: build
 
 help: build
 	@DEBUG=0 ./$(APP_NAME) --help
+
+build-all:
+	@rm -f ./$(APP_NAME)-*
+	$(call build-binary-mac)
+	$(call build-binary-linux)
+	$(call build-binary-windows)
+
+## Helper functions
+define build-binary
+	@GOOS=$(1) GOARCH=$(2) $(BUILD_CMD) -o $(APP_NAME)
+endef
+
+define build-binary-mac
+	@echo "Building $(APP_NAME) for macos"
+	$(call build-binary,darwin,arm64,arm64)
+	@mv $(APP_NAME) $(APP_NAME)-arm
+	$(call build-binary,darwin,amd64,x86_64)
+	@mv $(APP_NAME) $(APP_NAME)-x86
+	@lipo -create -output $(APP_NAME) $(APP_NAME)-x86 $(APP_NAME)-arm
+	@tar czf ./$(APP_NAME)-$(REVISION)-macos.tar.gz $(APP_NAME)
+	@rm -f $(APP_NAME)-x86 $(APP_NAME)-arm $(APP_NAME)
+endef
+
+define build-binary-linux
+	@echo "Building $(APP_NAME) for linux"
+	$(call build-binary,linux,arm64,arm64)
+	@tar czf ./$(APP_NAME)-$(REVISION)-linux-arm64.tar.gz $(APP_NAME)
+	$(call build-binary,linux,amd64,x86_64)
+	@tar czf ./$(APP_NAME)-$(REVISION)-linux-x86_64.tar.gz $(APP_NAME)
+	@rm -f $(APP_NAME)
+endef
+
+define build-binary-windows
+	@echo "Building $(APP_NAME) for windows"
+	@$(call build-binary,windows,arm64,arm64)
+	@mv ./$(APP_NAME) ./$(APP_NAME).exe
+	@zip -rq ./$(APP_NAME)-$(REVISION)-windows-arm64.zip $(APP_NAME).exe
+	@$(call build-binary,windows,amd64,x86_64)
+	@mv ./$(APP_NAME) ./$(APP_NAME).exe
+	@zip -rq ./$(APP_NAME)-$(REVISION)-windows-x86_64.zip $(APP_NAME).exe
+	@rm -f $(APP_NAME).exe $(APP_NAME)
+endef