That's it: after saving your configuration, and exiting <code>menuconfig</code> you can start the build process, by simply issuing the <code>make</code> command.
==Mounting the Buildroot file system on the target==
Once the build process is completed, in the <code>output/images</code> subdirectory the file <code>rootfs.tar</code> is available. This file contains the root file system for the target.