1.. _host_toolchains: 2 3Host Toolchains 4############### 5 6In some specific configurations, like when building for non-MCU x86 targets on 7a Linux host, you may be able to reuse the native development tools provided 8by your operating system. 9 10To use your host gcc, set the :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` 11:ref:`environment variable <env_vars>` to ``host``. To use clang, set 12:envvar:`ZEPHYR_TOOLCHAIN_VARIANT` to ``llvm``. 13