in reply to Re^2: Error in installing IO TTY Module
in thread Error in installing IO TTY Module

Looks like your perl was compiled with gcc but you do not have gcc installed. The /usr/bin/cc is probably HP's C compiler. Mixing compilers sometimes works, sometimes not, so even if you succeded in using cc instead of gcc (you could setup a symbolic link) you might get problems later. You need to install gcc (Google gcc - it is free) or recompile perl using the HP compiler.
The error sh:mor: not found does not seem to be connected to the compiler issue. Are you sure no one edited the Makefile and inadvertantly deleted the e from more?