使用go构建多个二进制文件

My project is structured as so:

src/github.com/foo/bar/
   - binary1
      - binary1.go
   - binary2
      - binary2.go

Each of these binaries are in a package main.

Is there a way, when I'm in the directory src/github.com/foo/bar to just run go build and end up with both binaries compiled?

go build ./... didn't produce any binaries. go build -a actually builds every package.

Or should I just call it as :

(cd binary1; go build)
(cd binary2; go build)