On Sat, 2004-09-25 at 18:09, Alan Cox wrote: > On Sat, Sep 25, 2004 at 11:09:42PM +0200, Arjan van de Ven wrote: > > in theory we compile all of fedora core with -mtune=i686 (or > > -mtune=pentium4 nowadays). however that only actually happens if > > packages propagate the RPM_OPT_FLAGS into the CFLAGS properly; almost > > all but not quite not all packages actually do this. > > I noticed a curiosity playing with this that perhaps the gcc folks can > explain the right choice for - on Dothan -mtune=i686 is a lot faster than > tuning for pentium4. AFAIK there's a -march=pentium-m in gcc 3.4.x. Does that imply that -mtune=pentium-m exists? Dax
