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CONFIG_TOOLCHAIN_HAS_BUILTIN_FFS

(No prompt – not directly user assignable.)

Type: bool

Help

Hidden option to signal that toolchain has __builtin_ffs*().

Default

• y if !(64BIT && RISCV)

Kconfig definition

At arch/Kconfig:980

Included via Kconfig:8 → Kconfig.zephyr:29

Menu path: (Top)

config TOOLCHAIN_HAS_BUILTIN_FFS
    bool
    default y if !(64BIT && RISCV)
    help
      Hidden option to signal that toolchain has __builtin_ffs*().

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