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 _get_errno() symbol.

Defaults¶

“y”

Symbols selected by this symbol¶

THREAD_USERSPACE_LOCAL_DATA if USERSPACE

Symbols that select this symbol¶

SIMPLELINK_HOST_DRIVER

Kconfig definition¶

At kernel/Kconfig:176

Included via Kconfig:10 → Kconfig.zephyr:25

Menu path: (top menu) → General Kernel Options

config ERRNO
    bool
    prompt "Enable errno support"
    default "y"
    select THREAD_USERSPACE_LOCAL_DATA if USERSPACE
    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
      _get_errno() symbol.

(Definitions include propagated dependencies, including from if’s and menus.)