SET CGO_ENABLED=0
SET GOOS=windows
SET GOARCH=amd64
go build -o demo_windows_amd64.exe demo.go
SET CGO_ENABLED=0
SET GOOS=linux
SET GOARCH=amd64
go build -o demo_linux_amd64 demo.go
SET CGO_ENABLED=0
SET GOOS=windows
SET GOARCH=amd64