https://mapopa.blogspot.com/2010/11/compiling-firebird-25-on-amazon-ec2.html
Mariuz's Blog: Compiling Firebird 2.5 on the amazon ec2 linux microinstance (centos based)
I have checked out Firebird 2.5 source from svn then i have installed the gnu c++ compiler also the readline libs also the icu ones after ...