On a Mac, the "most efficient" way to install jq would probably be using homebrew, e.g.
brew install jq
If you want the development version, you could try:
brew install --HEAD jq
but this has various pre-requisites.
Detailed instructions are on the "Installation" page of the jq wiki: https://github.com/stedolan/jq/wiki/Installation
The same page also includes details regarding installation from source, and has notes on installing with MacPorts.