Checklist: Transition to C17 as the minimum required C standard version #97061
Description
Summary
This task tracks the transition from C99 to C17 as the minimum required C standard version in order to compile Zephyr applications. This started originally as an RFC in #30105.
Checklist
Toolchains
The following toolchains have been verified to provide complete or near-complete C17 support:
- GCC (See C language)
- Clang/LLVM (See C Support in Clang)
- IAR (See this comment)
- Arm Toolchain for Embedded (based on Clang/LLVM, see releases)
C standard libraries
- Minimal libc (compiles, but doesn't offer the features)
- Picolibc (confirmed by maintainer @keith-packard)
- newlib ?
Pull Request
The PR that transitions to C17 by default is #97076