build issue on ubuntu 20.04 LTS

[olivier binda]

Hello all

I managed to build live555 on an ubuntu 16.04 box with the 
linux-no-openssl configuration,
without a hitch

Also, it looks like it should be possible to build live555 on ubuntu 
18.04, without a hitch too as someone published a way to do it in a 
docker container there : 
https://github.com/FotoFieber/live555-docker/blob/master/Dockerfile

So, the issue I reported seems to be tied to ubuntu 20.04 (the latest 
long term release).
Could someone give pointers as how to build live555 on ubuntu 20.04 ?

Best regard,
Olivier