CONFIG_ARCH

(No prompt – not directly user assignable.)

Type: string

Help

System architecture string.

Defaults

• “arc”

• “arm”

• “nios2”

• “posix”

• “riscv64” if 64BIT

• “riscv32”

• “sparc”

• “x86”

• “xtensa”

Kconfig definitions

At <Zephyr>/arch/arc/Kconfig:9

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → ARC Options

config ARCH
    string
    default "arc"
    depends on ARC

---

At <Zephyr>/arch/arm/Kconfig:9

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → ARM Options

config ARCH
    string
    default "arm"
    depends on ARM

---

At <Zephyr>/arch/nios2/Kconfig:7

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → Nios II Options

config ARCH
    string
    default "nios2"
    depends on NIOS2

---

At <Zephyr>/arch/posix/Kconfig:9

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → POSIX (native) Options

config ARCH
    string
    default "posix"
    depends on ARCH_POSIX

---

At <Zephyr>/arch/riscv/Kconfig:7

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → RISCV Options

config ARCH
    string
    default "riscv64" if 64BIT
    default "riscv32"
    depends on RISCV

---

At <Zephyr>/arch/sparc/Kconfig:7

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → SPARC Options

config ARCH
    string
    default "sparc"
    depends on SPARC

---

At <Zephyr>/arch/x86/Kconfig:9

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → X86 Architecture Options

config ARCH
    string
    default "x86"
    depends on X86

---

At <Zephyr>/arch/xtensa/Kconfig:21

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29 → <Zephyr>/arch/Kconfig:12

Menu path: (Top) → XTENSA Options

config ARCH
    string
    default "xtensa"
    depends on XTENSA

---

At <Zephyr>/arch/Kconfig:768

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:29

Menu path: (Top)

config ARCH
    string
    help
      System architecture string.

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