void*
     dlsym(void* handle, const char* symbol);

DESCRIPTION

     dlsym() returns the address of the code or data location specified by the
     null-terminated character string symbol.  Which libraries and bundles are
     searched depends on the handle parameter.

     If dlsym() is called with a handle, returned by dlopen() then only that
     image and any libraries it depends on are searched for symbol.

     If dlsym() is called with the special handle RTLD_DEFAULT, then every
     mach-o image in the process is searched in the order they were loaded.
     This can be a costly search and should be avoided.

     If dlsym() is called with the special handle RTLD_NEXT, then the search
     for the symbol is limited to the images which were loaded after the one
     issuing the call to dlsym().

RETURN VALUES

     The dlsym() function returns a null pointer if the symbol cannot be
     found, and sets an error condition which may be queried with dlerror().

NOTES

     Unlike other dyld API's, the symbol name passed to dlsym() must NOT be
     prepended with an underscore.

SEE ALSO

     dlopen(3) dlsym(3) dlerror(3) dyld(3) NSModule(3) NSObjectFileImage(3)
     ld(1) cc(1)

                                 Sept 25, 2004