Andrew Haley <aph-gcc@xxxxxxxxxxxxxxxxxxx> wrote: > Thomas Mittelstaedt writes: > > > Compiling with -Wall is not easy for us right now, too. There simply are > > too many!! :-( > > Well, that's your clue, isn't it? Indeed. While gcc has had problems with unreasonable or erroneous warnings, they are almost always repetitions of the same one and can trivially be removed with a Python/Perl/awk/etc. script. And I don't think that it has such problems at present. My experience with AIX is that the likely cause of both excessive warnings and misbehaviour is incompatible options. The documentation is politely described as unhelpful and inadequate, even by modern standards (despite its volume). You need to do a LOT of chasing to find out the restrictions and incompatibilities, but using the wrong command or option is a sure recipe for chaos. And, of course, that will often show up as misbehaviour only for optimised code :-( Note that AIX selects between option sets in its xlc and xlf suite by providing alternative commands. You need to poke quite a lot further to discover what that implies about which headers and libraries it uses in its various modes. Regards, Nick Maclaren, University of Cambridge Computing Service, New Museums Site, Pembroke Street, Cambridge CB2 3QH, England. Email: nmm1@xxxxxxxxx Tel.: +44 1223 334761 Fax: +44 1223 334679
