Picolibc - A C Library for Small 32-Bit Systems

Explore the development of picolibc, a C library for small 32-bit systems, in this 42-minute conference talk from linux.conf.au 2020. Delve into the challenges of embedded systems development for 32-bit processors like RISC-V and ARM, and learn how combining newlib with a modified avr-libc can create a robust yet lightweight C library. Discover the benefits of this approach, including reduced development costs and improved functionality. Examine proposed changes to GCC's multilib path handling for automated library selection based on target architecture. Gain insights into embedded C libraries, PicoLibc's features, I/O handling, printf implementation, and size optimization techniques. Follow along with a practical demonstration and compilation process, and understand the impact on application size.

Introduction
Embedded C libraries
C libraries for small systems
New Lib
PicoLibc
IO
Printf
Float only
Size
Threadlocal
Running applications
Semihosting
Compile
Linker script
How big is it
Demo