void Ming_setWarnFunction(void *func)
    void *fptr;

    fptr = dlsym(_Chming_handle, "Ming_setWarnFunction_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, Ming_setWarnFunction, NULL);
}