Large File Support

[Marvin Humphrey <ma...@rectangular.com>]

Greets,

It would be possible to have Charmonizer's LargeFiles module probe  
whether configuring the _LARGEFILE_SOURCE and _FILE_OFFSET_BITS  
macros succeeds in providing us with a 64-bit offset type when the  
current probes fail (as they do on Linux).  However, I think that  
sets us up for a possible confict with the host environment in the  
case that it wasn't compiled with large file support.  Here's a  
discussion of the issue:

http://www.ohse.de/uwe/articles/lfs.html

I think what we ought to do is just leave the LargeFiles module as it  
is now and count on the ccflags to define those macros when necessary  
(-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE). Simpler, and failsafe.

Is it reasonable to make large file support a required prerequisite  
for Lucy?

Marvin Humphrey
Rectangular Research
http://www.rectangular.com/