| .. _host_toolchains: | |
| Host Toolchains | |
| ############### | |
| In some specific configurations, like when building for non-MCU x86 targets on | |
| a Linux host, you may be able to re-use the native development tools provided | |
| by your operating system. | |
| To use your host gcc, set the :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` | |
| :ref:`environment variable <env_vars>` to ``host``. To use clang, set | |
| :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` to ``llvm``. |