Set up the basic environment by following instructions in [Ubuntu Build Environment](https://device.harmonyos.com/en/docs/start/introduce/oem_minitinier_environment_lin-0000001105407498). Both the user space and LiteOS Cortex-A kernel space are compiled using the LLVM compiler. If you choose to port the Linux kernel, run the following command to install the gcc-arm-linux-gnueabi cross compiler for compiling the Linux kernel-space image:
Set up the basic environment by following instructions in [Ubuntu Build Environment](../quick-start/quickstart-lite-env-setup-linux.md). Both the user space and LiteOS Cortex-A kernel space are compiled using the LLVM compiler. If you choose to port the Linux kernel, run the following command to install the gcc-arm-linux-gnueabi cross compiler for compiling the Linux kernel-space image:
## Introduction to the Compilation and Building Subsystem<a name="section354343816319"></a>
To learn more about the compilation and building subsystem, including the compilation and building process, compilation scripts, and building chipset source code or single components, see [Compilation and Building](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/compilation-and-building.md).
To learn more about the compilation and building subsystem, including the compilation and building process, compilation scripts, and building chipset source code or single components, see [Compilation and Building](../subsystems/subsys-build-mini-lite.md).
## Adding a Chipset Solution<a name="section18612153175011"></a>
