GDB inside Vim using clewn

I finally got around trying gdb inside vim and after a bit of tweaking it works.

Basic instructions are easy enough except for a few things. First, the readline mentioned is a package called libreadline-dev. Secondly, at least in Ubuntu 12.04 I needed to upgrade gdb to version 7.5 with

wget http://ftp.gnu.org/gnu/gdb/gdb-7.5.tar.gz
tar xvfz gdb-7.5.tar.gz
cd gdb-7.5
./configure
make
cp gdb/gdb /usr/local/bin

Because without this I got errors about some terminal issues. But after this running "clewn -va " and then "file
Having said that, for some reason command output is still only printed inside gdb, such as variable values. The buffer mentioned in the clewn documentation seems to be missing.