Package: camlp5

"camlp5" package binaries on Debian:

/usr/bin/camlp5 /usr/bin/camlp5o /usr/bin/camlp5o.opt /usr/bin/camlp5r /usr/bin/camlp5r.opt /usr/bin/camlp5sch /usr/bin/mkcamlp5 /usr/bin/mkcamlp5.opt /usr/bin/ocpp5

You may install this package on Debian with apt-get install camlp5