Optional libraries

This directory contains optional libraries that can be included in firmware images. Each directory can be included directly in xmake to add the entire library, some of the source files can also be added separately for small images that do not need an entire library.

This collection currently includes:

• atomic provides atomic support functions.
• compartment_helpers contains helpers for checking / ensuring that pointers are valid.
• crt provides C runtime functions that the compiler may emit.
• cxxrt provides a minimal C++ runtime (no exceptions or RTTI support).
• debug contains functions to support the debug logging APIs.
• event_group contains a FreeRTOS-like event-group API.
• freestanding provides a minimal free-standing C implementation.
• locks contains functions for various kinds of lock.
• microvium builds the microvium JavaScript VM to provide an on-device JavaScript interpreter.
• queue contains functions for message queues.
• stdio provides a very limited subset of stdio.h for debugging.
• string provides string.h functions.
• thread_pool provides a simple thread pool that other threads can dispatch work to for asynchronous execution.
• unwind_error_handler provides an error handler that unwinds the stack.