in file switch_loadable_module.c: 

switch_loadable_module_load_file(char *path, char *filename, switch_bool_t global, switch_loadable_module_t **new_module)

#ifdef WIN32

  dso = switch_dso_open("FreeSwitch.dll", load_global, &derr);

#elif defined (MACOSX) || defined(DARWIN)

  dso = switch_dso_open(SWITCH_PREFIX_DIR "/lib/libfreeswitch.dylib", load_global, &derr);

#else

  dso = switch_dso_open(NULL, load_global, &derr);

#endif

 

why the else case is dso open "NULL"? shouldn't it be  lib/libfreeswitch.so?