Date: Tue, 6 Jul 2004 19:44:37 -0700 From: David Schultz <das@FreeBSD.ORG> To: Mark Johnston <mjohnston@skyweb.ca> Cc: current@FreeBSD.ORG Subject: Re: cvs-src summary for June 28 - July 5 (complete) Message-ID: <20040707024437.GA52072@VARK.homeunix.com> In-Reply-To: <200407061055.29337.mjohnston@skyweb.ca> References: <200407061055.29337.mjohnston@skyweb.ca>
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On Tue, Jul 06, 2004, Mark Johnston wrote: > Compiling the system and ports with -O2 > --------------------------------------- > Dag-Erling Smorgrav (des) made a change to make.conf, correcting a comment > that said that -O2 exposed bugs in ppp to mention libalias instead. > > David Schultz (das) replied, saying "I've been compiling most things with > -O2 for a while (to find -O2 bugs, not for speed) and haven't noticed many > problems", except that "-O2 breaks floating-point exceptions in libm". > He suggested that "maybe -O2 should be automatically turned off while > compiling libm (and perhaps libalias as well). That would make it more > easily justifiable to make -O2 the default at some future point." > > Kris Kennaway (kris) responded "I don't think we can ever make it the > default since there's likely to be a lot of software in ports that would > be broken too." > > David answered "99% of the ports that "may break" build with -O2 on Linux ^^^^^ > (as -O2 is their default). What is different about us vs. Linux for these > ports?" That was David O'Brien, not me. ;-) > David responded "Because most everything in the ports collection was > developed on Linux using -O2. The bugs are in our code, not gcc's -O2." Likewise.
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