In my Lab computer, this error is appearing...

install.com> The existing pref.dat will be used in this
installation.

install.com> Phase 2 completed.

install.com> Processing CHARMM source on gnu...


install.com> The CHARMM executable
/home/tanay/CHARMM/c35b6/exec/gnu/charmm is NOT produced.
Check /home/tanay/CHARMM/c35b6/build/gnu/gnu.log
for installation errors.

install.com> Phase 3 completed.
please help me as soon as possible..