wrc1944 Posted April 3, 2003 Report Share Posted April 3, 2003 Since it worked out OK on Mandrake 9.1 (no issues in two days so far), I thought I'd post this in case anyone was interested. I rebuilt the Mandrake kernel-multimedia-2.4.21.0.16mdk-1-1mdk.src.rpm for athlon-xp, using these flags (I edited the rpmrc file), with no errors: optflags: athlon -O3 -march=athlon-xp -mcpu=athlon-xp -mmmx -msse -m3dnow -funroll-loops -fomit-frame-pointer -pipe -ffast-math -fforce-addr -fno-strength-reduce According to man gcc, the -mcpu=athlon-xp flag is not redundant, and without specifially using it, the compiler will not generate code which will not run on the i386, even with the -march=athlon-xp flag included. Apparently, this means that with only the -march=athlon-xp flag specified, gcc omits some features specific to the athlon-xp cpu. I assume this would hold true for any specific cpu. The command (on one line, from the directory the srpm is in) is: rpm --rebuild --target athlon kernel-multimedia-2.4.21.0.16mdk-1-1mdk.src.rpm You get the kernel, kernel-source, and the smp kernel (if you need it). I haven't examined the spec file yet, but I understand this kernel has the preemptive and low-latency patches, and the generated .config file in the source directory in /usr/src confirms this (CONFIG_PREEMPT=y). It can be found at: http://distro.ibiblio.org/pub/Linux/distri.../contrib/SRPMS/ Robert Crawford Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 Is there a place in MDK that you can specify compile flags? I know when I tried out Gentoo this was /etc/make.conf, is this relevant in MDK also? Because the file doesn't exist...plus I don't remember the format :-) Quote Link to comment Share on other sites More sharing options...
qnr Posted April 3, 2003 Report Share Posted April 3, 2003 There is, I used to use it, primarily to try to speed up video capture and encoding programs. I'll get back to you on where it was, if nobody else answers first. Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 cool, thnx. i'm considering giving gentoo a try again sometime, but i'm not sure i have the patience lol. Quote Link to comment Share on other sites More sharing options...
wrc1944 Posted April 3, 2003 Author Report Share Posted April 3, 2003 /usr/lib/rpm/rpmrc I edited the athlon line as root (added my extra flags for xp), and saved. Then after a rebuild you find your new rpms in /usr/src/RPM/RPMS/athlon. People say you should not do all this as root, and I've followed all the instructions to create the proper trees in ~/home, added the additional .rpmrc and .rpmmacros files to home exactly as instructed in the Mandrake rpm how-to, but it never works. I always get an immediate error "can't build to /usr/src/source," or something to that effect- can't recall right now. I've always resorted to doing it as root, and haven't had any problems, but if someone knows why I can't get this to work as user in home, please enlighten me! I'm sure it's some stupid error I'm making, like a path or something. wrc1944 Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 i found that file, but what i'm actually looking for a is a file that gcc uses to add compile flags when it compiles stuff. i tend to compile some things like this, instead of src rpms and the like. specifically waimea (my WM), gaim, and various other things.. the problem your having is probably that a regular user can't write to that directory. i do most of my rpm stuff as root (su in console of course), and it all seems to work out just fine. p.s.-i'm rebuilding that kernel rpm as we speak, i'll post how it turns out :-) Quote Link to comment Share on other sites More sharing options...
aru Posted April 3, 2003 Report Share Posted April 3, 2003 i found that file, but what i'm actually looking for a is a file that gcc uses to add compile flags when it compiles stuff. Is not a file what gcc uses for that purpose, is just the enviroment variable "CFLAGS"; for example put this file at your /etc/profile.d/ dir: # cflags.sh -- Compile flags for gcc3 CHOST="i586-mandrake-linux-gnu" CFLAGS="-O2 -march=pentium-mmx -mmmx -mno-mmx -ffast-math -funroll-loops -fomit-frame-pointer -falign-functions=2 -falign-jumps=2 -falign-loops=2 -mpreferred-stack-boundary=2 -pipe" CXXFLAGS=${CFLAGS} export HOST CFLAGS CXXFLAGS[ The above is for my pentiumMMX; for a i686 you need something like this: CHOST="i686-mandrake-linux-gnu" CFLAGS="-mcpu=i686 -O3 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}" export HOST CFLAGS CXXFLAGS HTH (in the case of kernel compilation I use the optimizations set through the "make menuconfig") Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 thnx aru :-) Quote Link to comment Share on other sites More sharing options...
wrc1944 Posted April 3, 2003 Author Report Share Posted April 3, 2003 As I understood it, after you had created the same tree in ~/home, so you could rebuild as user, the rpm --rebuild command wasn't suppose to write to the /usr/src/RPM directories, but use the new ones in home/wrc1944/RPM. But apparently it still tries to. I have checked and rechecked that I have folled the instructions correctly, and I have. I've never gotten an srpm to rebuild as a user, in the ~/home directory tree created for that specific purpose. I've posted at pclinuxonline, and CyberCFO tried to help, but we never figured it out, and he does it all the time. He sent me his ~/home .rpmrc file which he uses with Mandrake to build rpms as user, and I made my .rpmmacros file as instructed with my user name. Same error- it still tries to write to /usr/src/RPM/SOURCES- that's why I figure Mandrake must be defaulting somewhere in a config file/PATH, or somewhere??? This is on generic installs of both 9.0 and 9.1. wrc1944 Quote Link to comment Share on other sites More sharing options...
qnr Posted April 3, 2003 Report Share Posted April 3, 2003 For Tyme: Yes, aru (naturally) knew the process. You can get more information on optimizing your system in this ebook: http://linux.aliboom.com/pdfs/linux/Securi...te-Solution.pdf Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 thanks for the link qnr, maybe we should drop that in the tips forum? (if it's not there already) Quote Link to comment Share on other sites More sharing options...
johnnyv Posted April 3, 2003 Report Share Posted April 3, 2003 I found a pdf on compiling src.rpms for 9.0 it seems quite usefull and explains how to setup a build environment http://cybercfo.gkmweb.com/mandrake_a_la_gentoo.pdf Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 just a note, if you do this and use the nvidia modules, be sure to also get the kernel-source from texstar and install that so that you can recompile them for the new kernel. Quote Link to comment Share on other sites More sharing options...
aru Posted April 3, 2003 Report Share Posted April 3, 2003 For Tyme: Yes, aru (naturally) knew the process. You can get more information on optimizing your system in this ebook:http://linux.aliboom.com/pdfs/linux/Securi...te-Solution.pdf Thanks for the link, it looks like the kind of book I'll enjoy reading :) Quote Link to comment Share on other sites More sharing options...
tyme Posted April 3, 2003 Report Share Posted April 3, 2003 ran into some issues with the nvidia stuff. i was attempting to use the new installer, and it kept failing for some reason, unsure of why. going to try the 4191 src RPMs instead. we'll see how that turns out. alright, starting a new thread concerning the issues i'm having with this kernel and compiling the nvidia drivers. i'll link to it then. here ya go: http://www.mandrakeusers.org/viewtopic.php?t=4126 Quote Link to comment Share on other sites More sharing options...
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