Building Firebird 2.5 from Debian git repository
These are the general notes on building Firebird 2.5 from debian git , and it should work on any debian based distro like ubuntu or others
$apt-get install libicu-dev libedit-dev git-core
you need to check out the firebird 2.5 repository from debian git
$git-clone git://git.debian.org/git/pkg-firebird/2.5
$cd 2.5
$debuild -i
and wait for it to build it for you
also you can speed it up with make -j options or
distcc in the future