To build Buildroot3DS, here is what you do (you'll need to be on Linux, WSL hasn't been tested):
- download the cross-compile toolchain here and extract it to your /opt folder.
- run 'git clone https://github.com/AFellowSpeedrunner/buildroot3ds.git' and cd into the folder after downloading.
- rename "Hey! I'm a config file! Rename me to .config locally to load my config data!" to '.config'. don't worry if it disappears, this is normal.
- run 'make menuconfig' and adjust it to your liking. do not change the build options though.
- run 'make'.
- wait while it compiles.
- you will have your rootfs.cpio.gz image in the output/images folder and you can then copy it the linux3ds-kernel folder.
- once fully compiled with the 3DS kernel, have fun!
Buildroot3DS is based off the "buildroot" repository from the "Linux for 3DS" team and the original Buildroot repository.