Building Multiple Go Package Binaries Simultaneously

The question revolves around building multiple package binaries simultaneously, as the default advice of using a top-level cmd folder doesn't seem to work. The provided code example shows a particular folder structure that enables building specific binaries correctly.

To build all binaries in one step using the go build command, a variation of the following is recommended:

cd $GOPATH/someProject
for CMD in `ls src/cmd`; do
  go build ./src/cmd/"$CMD"
done

This command iterates through the packages in the src/cmd directory and builds each package individually. The resulting binaries will be stored in their respective package directories.

Alternatively, if you don't wish to install the binaries into $GOPATH/bin, a script can be employed. This is a common practice in open source projects, where build scripts handle multiple binary production.

The following example script can be used:

cd $GOPATH/someProject
for CMD in `ls cmd`; do
  go build ./cmd/$CMD
done

This script iterates through the packages in the cmd directory and runs go build on each. The result is a set of binaries stored in their respective cmd package directories.

For further reference, the following popular projects provide examples of build scripts:

• Grafana: https://github.com/grafana/grafana/blob/master/build.go
• Torus: https://github.com/coreos/torus/blob/master/Makefile
• Caddy: https://github.com/mholt/caddy/blob/master/dist/automate.go