hello installed frama-c on my bullseye distro of Debian when i exec "frama-c -help" get error, missing why3 lib installed libwhy3-ocaml-dev (1.3.3-1 and others) then seems to print the help text without error. just starting to use it, hope this helps regards enzo -- As Soon As Laws Are Neccessary For Men, They Are No Longer Fit For Freedom Kinshiro Morooka