This is the libc implementation you need to compile programs for the flix kernel.
The project build system was changed to CMake. You need to compile bionic and install it in a sysroot prefix so that other programs can be compiled against this sysroot. The libraries will be linked statically as flix does not support dynamic linking.
To compile:
$ mkdir build $ cd build $ cmake .. -DCMAKE_INSTALL_PREFIX=<your sysroot> $ make $ make install