On Mon, 09 Jan 2006 17:14:53 +0100 Thomas wrote: TA> IRIX (32-bit) and IRIX64 (64-bit) kernels need different handling TA> (nlist() vs. nslist64()), but there doesn't seem to be an existing TA> define (we currently assume IRIX64 which doesn't exist) to make this TA> decision at compile-time. Even if there was one, a binary compiled for TA> the N32 ABI can happily run on both IRIX32 and IRIX64 systems. So why TA> not handle this at runtime instead?
I'm a fa of doing as much as possible at compile time. In this particular case, configure should be able to detect if nlist64 is available, and if so, it should use it. The only time it matters is when building on 64bit host, and wanting to run the resulting binary on a 32bit host. I think this is a corner case that can be handled by documentation in README.irix. TA> net-snmp already has netsnmp_os_prematch() which seems to allow us to TA> handle platform specifics at runtime. Naturally, there's a trade-off TA> between flexibility and performance. The problem I have with this function is that it was based on kernel version, and assumed that specific functionality was tied with specific kernel versions. While that might be true for closed source vendors, with open source kernels it is not uncommon to find stuff backported from a newer kernel to an older one. This is why I prefer configure tests that check for functionality over run-time tests against kernel versions. -- Robert Story; NET-SNMP Junkie Support: <http://www.net-snmp.org/> <irc://irc.freenode.net/#net-snmp> Archive: <http://sourceforge.net/mailarchive/forum.php?forum=net-snmp-coders> You are lost in a twisty maze of little standards, all different. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
