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Re: using non-standard optflags (-O3, in particular)



Ralf Corsepius wrote:
So, the only results of recommendations to trust when it comes to
packaging binaries for a distro is those who are deeply familiar with
the guts of the OS, in case of Fedora, RH's GCC, glibc and kernel
developers.

This is BS. Sure, people have thought about the defaults, but it doesn't mean that the packager doesn't know what he's doing either. Some software, particularly numerical computation stuff, is built for being optimized properly. There are some extreme cases where using -O2 instead of -O3 simply makes a piece of software useless (take Blitz++ for example).

Using -O3 in specific cases isn't that big of a deal. In any case, if there's something the packager hasn't thought about, he'll be quickly reminded by way of the Bugzilla.


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