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diff --git a/mesalib/docs/README.QUAKE b/mesalib/docs/README.QUAKE new file mode 100644 index 000000000..e90c76a08 --- /dev/null +++ b/mesalib/docs/README.QUAKE @@ -0,0 +1,207 @@ + + Info on using Mesa 3.0 with Linux Quake I and Quake II + + + +Disclaimer +---------- + +I am _not_ a Quake expert by any means. I pretty much only run it to +test Mesa. There have been a lot of questions about Linux Quake and +Mesa so I'm trying to provide some useful info here. If this file +doesn't help you then you should look elsewhere for help. The Mesa +mailing list or the news://news.3dfx.com/3dfx.linux.glide newsgroup +might be good. + +Again, all the information I have is in this file. Please don't email +me with questions. + +If you have information to contribute to this file please send it to +me at brianp@elastic.avid.com + + + +Linux Quake +----------- + +You can get Linux Quake from http://www.idsoftware.com/ + +Quake I and II for Linux were tested with, and include, Mesa 2.6. You +shouldn't have too many problems if you simply follow the instructions +in the Quake distribution. + + + +RedHat 5.0 Linux problems +------------------------- + +RedHat Linux 5.x uses the GNU C library ("glibc" or "libc6") whereas +previous RedHat and other Linux distributions use "libc5" for its +runtime C library. + +Linux Quake I and II were compiled for libc5. If you compile Mesa +on a RedHat 5.x system the resulting libMesaGL.so file will not work +with Linux Quake because of the different C runtime libraries. +The symptom of this is a segmentation fault soon after starting Quake. + +If you want to use a newer version of Mesa (like 3.x) with Quake on +RedHat 5.x then read on. + +The solution to the C library problem is to force Mesa to use libc5. +libc5 is in /usr/i486-linux-libc5/lib on RedHat 5.x systems. + +Emil Briggs (briggs@tick.physics.ncsu.edu) nicely gave me the following +info: + +> I only know what works on a RedHat 5.0 distribution. RH5 includes +> a full set of libraries for both libc5 and glibc. The loader ld.so +> uses the libc5 libraries in /usr/i486-linux-libc5/lib for programs +> linked against libc5 while it uses the glibc libraries in /lib and +> /usr/lib for programs linked against glibc. +> +> Anyway I changed line 41 of mklib.glide to +> GLIDELIBS="-L/usr/local/glide/lib -lglide2x -L/usr/i486-linux-libc5/lib" +> +> And I started quake2 up with a script like this +> #!/bin/csh +> setenv LD_LIBRARY_PATH /usr/i486-linux-libc5/lib +> setenv MESA_GLX_FX f +> ./quake2 +set vid_ref gl +> kbd_mode -a +> reset + + +I've already patched the mklib.glide file. You'll have to start Quake +with the script shown above though. + + + +********************** + +Daryll Strauss writes: + +Here's my thoughts on the problem. On a RH 5.x system, you can NOT build +a libc5 executable or library. Red Hat just doesn't include the right +stuff to do it. + +Since Quake is a libc5 based application, you are in trouble. You need +libc5 libraries. + +What can you do about it? Well there's a package called gcc5 that does +MOST of the right stuff to compile with libc5. (It brings back older +header files, makes appropriate symbolic links for libraries, and sets +up the compiler to use the correct directories) You can find gcc5 here: +ftp://ecg.mit.edu/pub/linux/gcc5-1.0-1.i386.rpm + +No, this isn't quite enough. There are still a few tricks to getting +Mesa to compile as a libc5 application. First you have to make sure that +every compile uses gcc5 instead of gcc. Second, in some cases the link +line actually lists -L/usr/lib which breaks gcc5 (because it forces you +to use the glibc version of things) + +If you get all the stuff correctly compiled with gcc5 it should work. +I've run Mesa 3.0B6 and its demos in a window with my Rush on a Red Hat +5.1 system. It is a big hassle, but it can be done. I've only made Quake +segfault, but I think that's from my libRush using the wrong libc. + +Yes, mixing libc5 and glibc is a major pain. I've been working to get +all my libraries compiling correctly with this setup. Someone should +make an RPM out of it and feed changes back to Brian once they get it +all working. If no one else has done so by the time I get the rest of my +stuff straightened out, I'll try to do it myself. + + - |Daryll + + + +********************* + +David Bucciarelli (tech.hmw@plus.it) writes: + +I'm using the Mesa-3.0beta7 and the RedHat 5.1 and QuakeII is +working fine for me. I had only to make a small change to the +Mesa-3.0/mklib.glide file, from: + + + GLIDELIBS="-L/usr/local/glide/lib -lglide2x +-L/usr/i486-linux-libc5/lib -lm" + +to: + + GLIDELIBS="-L/usr/i486-linux-libc5/lib -lglide2x" + +and to make two symbolic links: + +[david@localhost Mesa]$ ln -s libMesaGL.so libMesaGL.so.2 +[david@localhost Mesa]$ ln -s libMesaGLU.so libMesaGLU.so.2 + +I'm using the Daryll's Linux glide rpm for the Voodoo2 and glibc (it +includes also the Glide for the libc5). I'm not using the /dev/3Dfx and +running QuakeII as root with the following env. var: + +export +LD_LIBRARY_PATH=/dsk1/home/david/src/gl/Mesa/lib:/usr/i486-linux-libc5/lib + +I think that all problems are related to the glibc, Quake will never +work if you get the following output: + +[david@localhost Mesa]$ ldd lib/libMesaGL.so + libglide2x.so => /usr/lib/libglide2x.so (0x400f8000) + libm.so.6 => /lib/libm.so.6 (0x40244000) + libc.so.6 => /lib/libc.so.6 (0x4025d000) + /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x00000000) + +You must get the following outputs: + +[david@localhost Mesa]# ldd lib/libMesaGL.so + libglide2x.so => /usr/i486-linux-libc5/lib/libglide2x.so +(0x400f3000) + +[root@localhost quake2]# ldd quake2 + libdl.so.1 => /lib/libdl.so.1 (0x40005000) + libm.so.5 => /usr/i486-linux-libc5/lib/libm.so.5 (0x40008000) + libc.so.5 => /usr/i486-linux-libc5/lib/libc.so.5 (0x40010000) + +[root@localhost quake2]# ldd ref_gl.so + libMesaGL.so.2 => +/dsk1/home/david/src/gl/Mesa/lib/libMesaGL.so.2 (0x400eb000) + libglide2x.so => /usr/i486-linux-libc5/lib/libglide2x.so +(0x401d9000) + libX11.so.6 => /usr/i486-linux-libc5/lib/libX11.so.6 +(0x40324000) + libXext.so.6 => /usr/i486-linux-libc5/lib/libXext.so.6 +(0x403b7000) + libvga.so.1 => /usr/i486-linux-libc5/lib/libvga.so.1 +(0x403c1000) + libm.so.5 => /usr/i486-linux-libc5/lib/libm.so.5 (0x403f5000) + libc.so.5 => /usr/i486-linux-libc5/lib/libc.so.5 (0x403fd000) + + +*********************** + +Steve Davies (steve@one47.demon.co.uk) writes: + + +Try using: + + export LD_LIBRARY_PATH=/usr/i486-linux-libc5/lib + ./quake2 +set vid_ref gl + +to start the game... Works for me, but assumes that you have the +compatability libc5 RPMs installed. + + +*************************** + +WWW resources - you may find additional Linux Quake help at these URLs: + + +http://quake.medina.net/howto + +http://webpages.mr.net/bobz + +http://www.linuxgames.com/quake2/ + + + +---------------------------------------------------------------------- |