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== Introduction ==
As explained [[Logical_structure_of_Bora_and_BoraX_Embedded_Linux_Kits_(BELK/BXELK)|here]], BELK/BXELK structure is not based on the [https://www.xilinx.com/products/design-tools/embedded-software/petalinux-sdk.html PetaLinux build system](*). Instead, BELK/BXELK make use of a standardized Yocto-based build system to build all the software components—U-Boot, Linux kernel, and root filesystem—that run on the Processing System (PS). This approach is more flexible and more modularized but it requires a little bit more knowledge of embedded Linux systems.
That being said, there are cases in which it can be convenient to build such components with PetaLinux build system, however. This technical note shows how to use the PetaLinux build system to build the Linux kernel released with BELK/BXELK.
It is assumed that PetaLinux is already installed on the host machine (for more details, please refer to [https://www.xilinx.com/support/documentation-navigation/see-all-versions.html?xlnxproducttypes=Design%20Tools&xlnxdocumentid=UG1144 ''UG1144 - PetaLinux Tools Documentation: Reference Guide'']).
(*) Please note that PetaLinux itself works on top of the Yocto build system.
== Building the Linux Kernel ==
