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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.

me with questions.

me at brianp@elastic.avid.com

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shouldn't have too many problems if you simply follow the instructions

in the Quake distribution.

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previous RedHat and other Linux distributions use "libc5" for its

runtime C library.

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.

RedHat 5.x then read on.

libc5 is in /usr/i486-linux-libc5/lib on RedHat 5.x systems.

info:

> 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

with the script shown above though.

a libc5 executable or library. Red Hat just doesn't include the right

stuff to do it.

libc5 libraries.

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

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)

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.

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.

working fine for me.  I had only to make a small change to the

Mesa-3.0/mklib.glide file, from:

-L/usr/i486-linux-libc5/lib -lm"

[david@localhost Mesa]$ ln -s libMesaGLU.so libMesaGLU.so.2

includes also the Glide for the libc5). I'm not using the /dev/3Dfx and

running QuakeII as root with the following env. var:

LD_LIBRARY_PATH=/dsk1/home/david/src/gl/Mesa/lib:/usr/i486-linux-libc5/lib

work if you get the following output:

        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)

        libglide2x.so => /usr/i486-linux-libc5/lib/libglide2x.so

(0x400f3000)

        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)

        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)

    ./quake2 +set vid_ref gl

compatability libc5 RPMs installed.