_write, _read replacement

[rekisum@web.de]

Hi,
searching this list, I found I have do replace _read and _write
from syscalls.c with my own implementation to get printf to work on my chip.
So do I have to rebuild the whole library or how to replace this functions?
In syscalls.c these functions are not labeled with attribute 'weak' so
overwriting with linker doesn't work.
A complete rebuild under Windows seems quite complicated.
Regards,
Joerg
______________________________________________________________
Verschicken Sie romantische, coole und witzige Bilder per SMS!
Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193