Actually, I don't quite understand why it still says "not the real name of the file". The 64tass docs say:
> -Wno-portable
> Don't warn about source portability problems.
> These cross platform development annoyances are checked for:
> * Case insensitive use of file names or use of short names.
> * Use of backslashes for path separation instead of forward slashes.
> * Use of reserved characters in file names.
> * Absolute paths
