On Saturday 10 Nov 2007 00:30 in article <[EMAIL PROTECTED]> of linux.gentoo.user, Stefan G. Weichinger([EMAIL PROTECTED]) wrote:
> Greets, I recently bought a new CPU for my mythtv-box, it's a Pentium > Dual E2160 .... > > Currently I use > > CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer" > > as I moved the system over from a Pentium 4 (which just crashed). You need to consider CHOST as well, to ensure you make the most of the newer CPUs. Here is what I use on an E6600 machine: CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -mmmx -m3dnow -msse -msse2 -msse3 -mfpmath=sse,387 -O2 -pipe" Note that -fomit-frame-pointer is not applicable on AMD64/EM64T hardware platforms; it will be silently ignored by GCC. Most of the additional processor features I have specified (MMX, SSE/2/3, 3DNow!) are actually implied by the -march=nocona, but I specify as a mnemonic to myself that these are [potentially] in use on this box. If you simply restored from a Pentium 4 system you will need to take the steps to change the CHOST. This is documented on the Gentoo web site. -- Regards Dave [RLU#314465] ====================================================== [EMAIL PROTECTED] (David W Noon) ====================================================== -- [EMAIL PROTECTED] mailing list
