Help¶

This option specifies that the kernel lacks timer support. Some device configurations can eliminate significant code if this is disabled. Obviously timeout-related APIs will not work.

Default¶

y

Kconfig definition¶

At kernel/Kconfig:581

Included via Kconfig:8 → Kconfig.zephyr:30

Menu path: (Top) → General Kernel Options

config SYS_CLOCK_EXISTS
    bool "System clock exists and is enabled"
    default y
    help
      This option specifies that the kernel lacks timer support.
      Some device configurations can eliminate significant code if
      this is disabled.  Obviously timeout-related APIs will not
      work.

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