A new web-page with instructions to install YAMBO is available on wiki: Installation.
All new configure options of Yambo 5.0 are available here.
Moreover we provide specific installation setup for different machines:
Install Yambo on Ubuntu/LinuxMint
Install Yambo on Ubuntu/LinuxMint with Intel compiler
Machine specific configure scripts
Notice that it is not possible to install Yambo on some old machines, or special configurations, please have a look to our Known Issues section.