ZoomFloppy on Linux

Hallo allemaal,


The IEEE part of ZoomFloppy still doesn't work for me under Windows. 
The IEC part does. So I decided to install Ubuntu 18.04 on an 
obselete PC: P4-3 GHz, 6 MB RAM, 128 MB SSD.

I followed the instructions on Spiro's site and:

   http://www.baltissen.org/temp/Screenshot.png

It's clear usb.h is missing but in this case I have no idea where to 
look for it. FYI: Ubuntu was installed just 10 minutes before. 

Any idea what to do now (just consider me as a complete newbee 
here)? Many thanks!


--
   
Kind regards / Met vriendelijke groet, Ruud Baltissen
www.Baltissen.org