5.2 Configuring the Buildroot

In Buildroot root directory, there is configs directory containing several default configurations. The buildroot-external-microchip repository provides extra defconfigs in its own configs directory. All these defconfigs target the SD card as boot media.

Configure the buildroot with the defconfig file present in the external tree using BR2_EXTERNAL. Refer the following command for details:

$ BR2_EXTERNAL=../buildroot-external-microchip/ make sama5d27_som1_ek_graphics_defconfig
By configuring the buildroot with sama5d27_som1_ek_graphics_defconfig file, the WILC support will be included into the package. WILC driver support will be added to the kernel present at buildroot-at91/output/build/linux-linux4sam_6.2/.

The command will configure the buildroot and generate a .config file.

Additional modules to be added to the buildroot apart from what is included in the defconfig file use the following command and add necessary components into buildroot.