Kenneth Prugh wrote: > Andrew Gaydenko wrote: > >>>> The question is: must I replace '-march=nocona' with '-mtune=native and >>>> -march=native'? >>>> >>> I have a Core2 Duo E6600 and use these CFLAGS with GCC 4.2: >>> >>> CFLAGS="-Os -march=native -mtune=native -fomit-frame-pointer -pipe -mmmx >>> -msse2 -msse3" >>> >>> Native works fine here. >>> >> Kenneth, thanks! I'll try your flags-string. I hope, there aren't any >> resons to rebuld anything else after switching form 4.1.2 with curennt >> flags to 4.2.0 with youe flags. Is it true? >> > > Personally I rebuilt everything on my system because I wanted everything > to be compiled under my shiny new toolchain. I accomplished it via this: > > # emerge -eav system > # emerge -eav world > > However, I don't believe you _have_ to rebuild. GCC 4.1 and 4.2 should > be binary compatible. I know that my GCC 4.1 LibTorrent works fine with > a GCC 4.2 built rtorrent, so I would like to say it should work fine. > >
I have a script that you can run that rebuilds everything only once and it is a complete bottom to top rebuild. No need to do a system then world this way. I got it off the forums and I have used it a few times and it works very well for me so far. If you want it, I can send it to you off list or post it here for everybody that wants to save a copy. I have not used it in a while so I'm not sure if portage changes may have made it not work anymore. Let me know. Dale :-) :-)
