[Boost-build] Choice of optimization flags for GCC

Subject: [Boost-build] Choice of optimization flags for GCC
From: David Abrahams (dave_at_[hidden])
Date: 2008-09-08 14:51:11

According to http://www.gentoo.org/doc/en/gcc-optimization.xml, we are
using suboptimal optimization settings when building on GCC-4.x (-O3;
they say it should be -O2).  I seem to recall hearing from someone (who
ought to know) that -O3 was actually strictly experimental and not even
guaranteed to produce correct code.  But I may be misremembering and I
am unable to corroborate any of this.  Anyone?

Thanks,

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com