On Mon, Jun 01, 2009 at 07:50:59PM +0200, Matthias Kilian wrote:
We set _LP64 and __LP64__ variables on 64-bit arch.
$ cpp -dM /dev/null | grep LP64
#define _LP64 1
#define __LP64__ 1
It should also be ok to (ab)use LONG_BIT from limits.h, depending
on how the code is 64 bit specific.
Whichever solution is best, it would be nice if it was somewhat portable
to other unices. The _LP64 || __LP64__ solution seems to be portable
anywhere a recent version of gcc is in use.
Ted
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