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Description
**LIBOMP_ARCH** = ``aarch64|aarch64_32|arm|i386|loongarch64|mic|mips|mips64|ppc64|ppc64le|x86_64|riscv64|s390x``
The default value for this option is chosen based on probing the compiler for
architecture macros (e.g., is ``__x86_64__`` predefined by compiler?).
See also: riscv-collab/riscv-gnu-toolchain#1512