Date: Thu, 13 Mar 2008 11:58:52 +0100 From: "Luca Presotto" <Luca.Presotto@cern.ch> To: <marcin.koziuk@planet.nl> Cc: freebsd-questions@freebsd.org Subject: RE: Tuning make.conf Message-ID: <9A6A62B6B84859469F3EBB5F09D818CA219E98@cernxchg50.cern.ch> References: <Pine.LNX.4.58.0803130937530.5944@lxplus098.cern.ch> <47D9004D.5070407@planet.nl>
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>You're *really* wasting your time.=20 I supposed that! >Your system is doing no cpu cycles at all for most of=20 >the time anyway. [cut]Also, makeopts and -pipe just make _compiling_ = faster, not the=20 >applications themselves!!!. I agree with everything. In any case I think that a faster compiling = will really be a good thing. I have been reading another time the man of make.conf and I still have = some doubts. Neither in the example either in the man page there is any reference to = "MAKEOPTS". Changing from -j1 to -j3 would really be a huge difference!=20 To be able to set this is very important.=20 Then I don't want an ultra tweaked make.conf like gentooers do. Just a = reasonable one.=20 (And you have convinced me, I won't recompile everything. Just to have a = good compiling when I will be upgrading) I have some doubts about the correct syntax, the man is ambiguous in = this point. If I write CPUTYPE=3D core2 will it automatically sets all the best safe = CFLAGS for my core or just set the -march=3Dcore2 Should my make.conf be like: MAKEOPTS=3D=3D-j3 CPUTYPE=3Dcore2 CFLAGS=3D --O2 -pipe -fno-strict-aliasing or just: MAKEOPTS=3D=3D-j3 CPUTYPE=3Dcore2 or maybe: MAKEOPTS=3D=3D-j3 CPUTYPE=3Dcore2 CFLAGS+=3D --O2 -pipe -fno-strict-aliasing >Please take a look at the following pages, they have a lot more=20 >information about this matter ;) >http://funroll-loops.info/ >http://bugs.gentoo.org/show_bug.cgi?id=3D74072 Actually that's really funny!! I think that's why there are so many = pages about gentoo and almost none about other OSes.
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