Hi @cperos, it appears from your error message that you are building Ping-Viewer with Qt 5.9.5.
I would recommend to install Qt with the official tool if possible, if you hardware/OS is not fully supported you could try to use non-official installation tools such as aqtinstall.
If you have any other Qt version installed, make sure to configure cmake property to look for the correct Qt installation version path.
As @EliotBR pointed, we do have an open issue to create ARM based releases, there are some people that are building and running Ping-Viewer on the raspberry, so we know that it works: Building PingViewer from source - #4 by hc-robotics