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MOS-FET
Apprentice
Joined: 20 May 2003
Posts: 291
Location: Cologne, Germany
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 Posted: Sat May 31, 2003 4:27 pm Post subject: compile opts |
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hello,
can someone please explain the meaning of the -03 (or -02) and -pipe cflags when compiling? what do they do, whats with performance/stability of the resulting binaries? i actually have set cflags to march=athlon-xp -03 -pipe, but i've recognized that for example when i compile the kernel, it only says march=athlon-xp, the two other args are missing. when i was emerging rp-pppoe it said unknown argument:"-03" when it was compiling. is that normal?
thanks
tom |
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robmoss
Retired Dev
Joined: 27 May 2003
Posts: 2634
Location: Jesus College, Oxford
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| Posted: Sat May 31, 2003 4:33 pm Post subject: |
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Have a look at
then head down to "Invoking GCC" and then "Optimize Options" and this will explain every optimization flag there is (including -O2, -O3, -pipe and others).
Unfortunately, I can't help with your rp-pppoe problem as I have a LAN connection to the net, so don't use rp-pppoe - anyone know? |
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MOS-FET
Apprentice
Joined: 20 May 2003
Posts: 291
Location: Cologne, Germany
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| Posted: Sat May 31, 2003 4:39 pm Post subject: problem |
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| shame on me :-( i wrote -03 (zero-three) instead of -O3. damn :-) |
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Portage & Programming
