On Thu, 6 Jul 2006 14:44:22 +0200 "Diego 'Flameeyes' Pettenò" <[EMAIL PROTECTED]> wrote:
> On Thursday 06 July 2006 14:35, Kevin F. Quinn wrote: > > This could easily be done by configure > > scripts; perhaps it would be a good idea to look into writing some > > autoconf macros. > Actually there's little need, you can simply use the #ifdef in the > code, unless you have separated source files for MMX, SSE and so on > (that might as well be), but even then, it's really trivial to > autoconf. Yep; I've seen that several packages do it the #ifdef way, which is ideal as we don't need to do set any configure stuff at all then (I guess those packages don't have configure options/use flags to select between mmx, sse etc anyway). > The problem is that many autoconf scripts do it the other way around, > by forcing -march or -mcpu (that is deprecated by -mtune too) deduced > from /proc/cpuinfo. Ooh; that's nasty. Let me guess - mplayer ... yeah; what a surprise. Presumably we disable such trickery if we see it, as it makes the target code depend on the build system which is obviously wrong - at least for Gentoo. -- Kevin F. Quinn
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