You need to have command line tools on os x to be able to use some commands like make, etc… Here is two valid options to get them with or without installing Xcode.
With Xcode app
If you need to have command line tools on os x to be able to use some commands like make, you may already know that you can download the Xcode app and then go to Xcode > Preferences > Download and click on Command Line Tools > Install button.
Without Xcode app
But you can too install these tools without getting all Xcode environment, Apple provide a dmg download with these tools.
You need a developer account to access the download which you can get here.
And you should see this list of downloads :