[lammps-users] Problems with Bond_style class2

Hello Everyone,

i have a problem with the command Bond_style.

i use the command bond_style with the style class2 and
lammps tell me:

bond_style class2
ERROR: Invalid bond style

in the web page:
http://lammps.sandia.gov/doc/bond_coeff.html

appear this style but the link don't run.

the bond style class2 don't exist anymore?

Thank.

The class 2 potentials are in the CLASS2 package. Did
you build LAMMPS with the package in place? I.e. make yes-class2
before building the code? See the manual for more info on
packages.

Steve