Reference: dl_install_xsub (Perl in a Nutshell)

dl_install_xsub

dl_install_xsub (perl_name, symref[, filename])

Creates a new Perl external subroutine. Takes the following arguments:

perl_name: Name of the new subroutine.
symref: Pointer to the function that implements the routine.
filename: The source file for the function. If not defined, DynaLoader is used.


Reference: dl_find_symbol		Reference: dl_load_file