For more information about 'BearOS', please see my separate repository:
https://github.com/kevinboone/bearos
This is a collection of simple utilities that demonstrate how to cross-compile
(under Linux) programs for BearOS for the Raspberry Pi Pico. Each module has a
Makefile for BearOS, and most have a Makefile.linux for building the same
code on Linux. Some of these utilities were written specifically for BearOS,
but others are ports of simple(-ish) Linux programs.
To build these programs, you'll need to edit Makefile.defs to indicate the
locations of the BearOS api/ directory, and the various compiler libraries.
To build the entire bundle, just run make. make stage copies all the
generated binaries to a directory rootfs, which can be copied to top level of
an SD card, for use with BearOS.