Perhaps this is not necessary to post, but, for the record, if you run
into the "cannot find -lcr" error when compiling LAMMPS in ubuntu
11.04, then install the "libcr-dev" package. This fixed it for us on
our desktop machines.
I posted this solution because a question about this problem was
posted earlier (http://lammps.sandia.gov/threads/msg20516.html) and
here is another solution.
Makefile.ubuntu (722 Bytes)