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  • From: Duane Macolm <d.malcolm AT auckland.ac.nz>
  • To: Geoffrey Derber <Geoffrey.Derber AT Trinity.edu>
  • Cc: sm-discuss AT lists.ibiblio.org
  • Subject: Re: [SM-Discuss] Compiling xfree86 with gcc2
  • Date: Tue, 26 Nov 2002 07:50:18 +1300

Thanks for the replies. I don't understand these optimizations flags too well. But from these posts I gather the optimization flags work well for other processors except pentium4's. Is this true or is there some other problem that's causing these errors?

How do I correct this problem? Do I start looking on the gcc website for bugs and patches?

If I had to choose between compiling xfree86, xscreensaver and mozilla with gcc3 and lower optimization flags or with gcc2, which would be better?

I do agree that xfree86 should not be changed to back gcc2 if the majority of users compile fine with gcc3.

Regards, Duane.

Geoffrey Derber wrote:

Duane Malcolm wrote:

Hi,
Last week I brought up an issue about compiling xfree86 using gcc3. I
think it was decided that xfree86 was to be compiled using gcc2. Is this
true?


XFree86 compiled just fine for me with gcc3. I don't think we should be too quick to force it to compile with gcc2 again, since it does work with gcc3. We may just need to play around with the optimizations a bit more.

but I will agree, the optimizations are being sent twice in my compile log.

gcc -march=pentium3 -mmmx -mfpmath=sse -msse -O3 -Os -march=pentium3 -mmmx -mfpmath=sse -msse -O3 -Os

Geoffrey

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