CONFIG_ERRNO

Enable errno support

Type: bool

Help

Enable per-thread errno in the kernel. Application and library code must include errno.h provided by the C library (libc) to use the errno symbol. The C library must access the per-thread errno via the z_errno() symbol.

Default

  • y

Symbols that select this symbol

Kconfig definition

At <Zephyr>/kernel/Kconfig:200

Included via <Zephyr>/Kconfig:8<Zephyr>/Kconfig.zephyr:30

Menu path: (Top) → General Kernel Options

config ERRNO
    bool "Enable errno support"
    default y
    help
      Enable per-thread errno in the kernel. Application and library code must
      include errno.h provided by the C library (libc) to use the errno
      symbol. The C library must access the per-thread errno via the
      z_errno() symbol.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)