Date: Sun, 03 Jul 2005 00:52:54 -0000 From: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=) To: Kris Kennaway <kris@obsecurity.org> Cc: FreeBSD ports <ports@freebsd.org>, Michael Johnson <ahze@ahze.net>, current@freebsd.org Subject: Re: HEADS UP: Ports are not ready for CFLAGS=-O2 in 6.0 Message-ID: <xzpk6sz3oj1.fsf@dwp.des.no> In-Reply-To: <20041105221020.GA39140@xor.obsecurity.org> (Kris Kennaway's message of "Fri, 5 Nov 2004 14:10:20 -0800") References: <20041102222000.GA65845@xor.obsecurity.org> <639522fe041103144732ea6683@mail.gmail.com> <1099522198.59328.4.camel@blueheron.ahze.net> <200411050919.09547.freebsd.nospam@mekanix.dk> <20041105215220.GA32961@xor.obsecurity.org> <7CBFDBE9-2F75-11D9-8D06-000A958C81C6@ahze.net> <20041105221020.GA39140@xor.obsecurity.org>
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Kris Kennaway <kris@obsecurity.org> writes: > On Fri, Nov 05, 2004 at 04:56:03PM -0500, Michael Johnson wrote: > > Is there a list of what's broke with -O2 in ports anywhere? > Some of the bugs are probably silent. For example, different versions > of gcc sometimes have bugs at higher optimization levels or with > certain CPUTYPE values. As far as we know, that is not the case for FreeBSD 5.3 and 6.0. > -O2 will also cause build errors in other ways, e.g. if functions in a > library are improperly declared static and not referenced internally > (but are referenced externally by another application trying to link > with the library), since -O2 may optimize them out completely. That's crap. You can't reference a static symbol outside your own compilation unit. That's the whole point with declaring it static. The problem with arj is that it uses a tool to embed a checksum in each binary, and the placeholder for that checksum was declared static but never referenced, so gcc optimized it out and the tool couldn't find it. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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