The projects in here are half-baked or not so half-baked experiments that for whatever reason haven't been separated out into their own repository. Usually it's because keeping Buildroot projects here makes them easier to maintain.
If you're using Ubuntu, you may need to install some packages to make Buildroot work. This should be sufficient:
$ sudo apt-get install git g++ libncurses5-dev bc make unzip zip
All builds are done in directories that are separate from the source tree. This allows multiple configurations to be tried simultaneously and keeps the source tree clean.
Assuming that you've cloned this project already, create a build directory by
running ./create-build.sh <defconfig> <path to build directory>. To create
build directories for all configurations (which is what I do), run
./create-all-builds.sh
Then build the project that you want:
$ cd o/fillmein
$ make
It can take some time to download and build everything so you may need to be
patient. The build products can be found in the images directory.
The following projects can be built: