For macOS:
GOOS=darwin GOARCH=amd64 go build -o magic main.go
For Windows:
GOOS=windows GOARCH=amd64 go build -o magic.exe main.go
For macOS:
GOOS=darwin GOARCH=amd64 go build -o magic main.go
For Windows:
GOOS=windows GOARCH=amd64 go build -o magic.exe main.go