Ian Lance Taylor <[email protected]> writes:

> mmapio.c uses _GNU_SOURCE so that getpagesize is available on GNU/Linux 
> systems.

That should be available by default (which includes BSD things) unless
the namespace has been restricted in some other way.

There's of course also the POSIX way of using sysconf(_SC_PAGESIZE).

Andreas.

-- 
Andreas Schwab, [email protected]
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