#elif HAVE_TWO_GETMNTENT || HAVE_GEN_GETMNTENT || HAVE_SUN_GETMNTENT
new = cu_mount_gen_getmntent ();
#elif HAVE_SEQ_GETMNTENT
-# warn "This version of `getmntent' hat not yet been implemented!"
+# error "This version of `getmntent' hat not yet been implemented!"
#elif HAVE_ONE_GETMNTENT
new = cu_mount_getmntent ();
#else
- new = NULL;
+# error "Could not determine how to find mountpoints."
#endif
if (first != NULL)