Concerning my first comment, here is the solution to be able to us again the gnat compiler tool chain :
sudo ln -s /usr/lib/gcc/i486-linux-gnu/4.3 /usr/lib/gcc/i486-linux- gnu/4.3.1 strace tell us that the gnat command try to open /usr/lib/gcc/i486-linux-gnu/4.3.1/adainclude/system.ads, and crash as this file does not exist. A symlink to /usr/lib/gcc/i486-linux-gnu/4.3 solve the problem .... -- gnat broken with last gcc update https://bugs.launchpad.net/bugs/250173 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs