We can run the main package with go run main.go.

To build a binary, we can instead use go build inside our project folder.

The executable produced will correspond to the operating system and architecture of our PC.

If we want to produce executable for different operating system, we can use the GOOS environment variable to set it to a different os, and run go build. (e.g.: GOOS=windows go build)

If we want to produce executable for different CPU architecture, we can use the GOARCH environment variable to set it to a different architecture, and run go build (e.g.: GOARCH=arm go build)

References

• John Arundel, For the Love of Go
• the-init-function-in-go