3.1.4.2 Configuring the Buildroot

In Buildroot root directory, there is configs directory which containing several default configurations. The buildroot-external-microchip repository provides extra defconfigs in its own configs directory. Use BR2_EXTERNAL file to configure the buildroot with the defconfig file available in the externel tree.

Use the following command to configure the buildroot and generate a .config file.
 $ BR2_EXTERNAL=../buildroot-external-microchip/ make sama5d2_xplained_graphics_defconfig