Make sure you have python3-dialog installed on your system using:
apt-get install python3-dialog
for debian/ubuntu or
dnf install python3-dialog
In the gpvdm directory run:
you should get a screen looking like this:
Select (packages) and follow the menu options. The build system should install the packages needed to compile gpvdm. If it does not work look under build_system/dependency_scripts/*.sh. To find a bash script which should also install the needed dependencies.
Now exit the build tool.
Now restart the build tool as a normal user. It will prompt you to download the rest of the source code to gpvdm off github, just say yes to all questions. Once the source code has downloaded, you will again be presented with a blue screen and select build: