Using Perl modules, which themselves use C libraries, from your C program
    If you've played with the examples above and tried to embed a script
    that *use()*s a Perl module (such as *Socket*) which itself uses a C or
    C++ library, this probably happened:

     Can't load module Socket, dynamic loading not available in this perl.
      (You may need to build a new perl executable which either supports
      dynamic loading or has the Socket module statically linked into it.)

    What's wrong?

    Your interpreter doesn't know how to communicate with these extensions
    on its own. A little glue will help. Up until now you've been calling
    *perl_parse()*, handing it NULL for the second argument:

     perl_parse(my_perl, NULL, argc, my_argv, NULL);

    That's where the glue code can be inserted to create the initial contact
    between Perl and linked C/C++ routines. Let's take a look some pieces of
    *perlmain.c* to see how Perl does this:

     static void xs_init (pTHX);

     EXTERN_C void boot_DynaLoader (pTHX_ CV* cv);