glibc 2.18 configure warning

J'utilise Ubuntu 12.04 LTS. J'essaie d'installer glibc-2.18 tandis que ./configure cela donne

configure: error: you must configure in a separate build directory

Puis j'ai essayé de configurer dans le répertoire bla puis il continue à répéter ces lignes :

checking build system type... (cached) x86_64-unknown-linux-gnu
checking host system type... (cached) x86_64-unknown-linux-gnu
checking for dummy-gcc... (cached) gcc
checking for suffix of object files... (cached) o
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking whether we are using the GNU C++ compiler... (cached) yes
checking whether g++ accepts -g... (cached) yes
checking for dummy-readelf... (cached) readelf
checking for sysdeps preconfigure fragments... x86_64 
configure: running configure fragment for add-on bla
configure: WARNING: you should use --build, --host, --target
configure: WARNING: you should use --build, --host, --target

I'm originally trying to install utorrent-server` qui donne :

./utserver: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.16 not found (required by ./utserver)

Comment résoudre ce problème ?