Struggling with configure because it require at least autoconf 2.69 or higher, whereas 2.68 is installed.. Thanks !
Finally solved my issue. Turns out that building / installing autoconf 2.69 from source works :
wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
tar xvfvz autoconf-2.69.tar.gz
cd autoconf-2.69
./configure
make
make install