Hi John, Those questions are Linux related, not GCC related. I'm sure GCC will support the Linux 64-bit I/O API routines without a hitch. But whether or not your particular Linux supports 64-bit I/O API routines and what those APIs are... well, that's Linux issue. Note: I'd expect the standard routines like lseek to be 64-bit savvy if the OS supports 64-bit file systems, without having special 64-bit one-offs, like lseek64, and things like off_t being typedef'd to a 64-bit integer (probably a signed long long). --Eljay
