*-unknown-linux-ohos:
> Tier: 2 (with Host Tools): aarch64-unknown-linux-ohos, armv7-unknown-linux-ohos, x86_64-unknown-linux-ohos
> Tier: 3: loongarch64-unknown-linux-ohos
OpenHarmony has no support for gcc. All the toolchains are LLVM. [2]
[1]: https://doc.rust-lang.org/rustc/platform-support/openharmony...
[2]: https://gitee.com/openharmony/third_party_llvm-project