DL__SETERROR 238 libltdl/loaders/dlopen.c DL__SETERROR (CANNOT_OPEN); DL__SETERROR 254 libltdl/loaders/dlopen.c DL__SETERROR (CANNOT_CLOSE); DL__SETERROR 271 libltdl/loaders/dlopen.c DL__SETERROR (SYMBOL_NOT_FOUND);