On 8 Oct 2003, at 9:18 pm, Hemmann, Volker Armin wrote:
On Wednesday 08 October 2003 00:14, mathieu perrenoud wrote:
CFLAGS="-O3 -march=athlon-xp -funroll-loops -fprefetch-loop-arrays -pipe
-fomit-frame-pointer"
After some years of compiling with different gcc versions I state, that using
O3 is a useless waste of time. The binaries are bigger (less catch left for
anything else), the compiling needs a whole lot of time longer than
evverything else and a lot of proggies are not very stable.
Try Os. I am using Os with my athlon-xp for some time now, with pleasurable
results.
You've mentioned this before.
I've just finished an `emerge -up world` which took several days because KDE was rebuilt, so if I can speed compiling I'll be very pleased. KDE is slow enough running, or rather *desperately slow* running, but I hope to speed this by prelinking (which I'm about to attempt).
For the future, tho', what CFLAGS do you recommend for a Pentium 2, please..?
I see that a week or so you recommended for the Pentium 3:
-march=pentium3 -Os -fomit-frame-pointer -msse -mfpmath=sse
but I gather from `man gcc` that -msse & -mfpmath=sse are not supported on Pentium 2.
Currently I'm using:
CFLAGS="-march=pentium2 -O3 -pipe -fomit-frame-pointer"Would you recommend:
CFLAGS="-march=pentium2 -Os -pipe -fomit-frame-pointer"
or is there anything else i could usefully (and stably) add..?Many thanks in advance for your time,
Stroller.
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