Lopper is a backend Python utility used by AMD Vitis™ to extract hardware metadata from the system device tree. Although included in the Vitis installation, Lopper is also available on GitHub. To allow developers to make changes and apply bug fixes to Lopper without modifying the Vitis installation, an environment variable is provided to enable the use of an external Lopper. To use an external version of Lopper, run the following command:
export VITIS_LOPPER_INSTALL_LOC="path/to/Lopper"