linux core dump with glBegin()

I stumbled upon the nehe tutorial and have found it absolutely incredible,
the depth and clarity make it invaluable. I have successfully compiled
under Delphi, but ultimately want to compile under Linux and finally use
togl to implement a tcl interface. But right now I am stuck. My problem
is such: I successfully(?) downloaded and installed Glut 3.7. I then
successfully got the first lesson to run correctly without drawing anything
on the screen. However, when I tried to run the second lesson (linux source
code), it compiled fine, but on running, it gave me the following error and
ended:

GenuineIntel cpu detected.
Katmai cpu detected.
Illegal instruction (core dumped)

This error only occurrs when I try to draw polygons or triangles, or anything on the screen.

I do not know how to make it work and would appreciate it if you could help
me pinpoint the problem. Thank you very much,

Seth

[miq]

Hi Raphaelo,

try out the Linux/GLX Version (can be found at http://www.jacksonville.net/~planetes/). If it works the error has to be somewhere in GLUT/your setup of GLUT.

Otherwise perhaps your openGl.so is broken or there are incompatibilities with your hardware.

I would check out the GLX-Version first to see if the error persists...

hope this gets you closer to the error...

bxe Miq

Thank you for that link, I checked it out and downloaded the sample lessons, unfortunately after compiling them, they gave me the exact same error.

I am using Red Hat 6.2 on a PII 650 with a voodoo 3 video card.
My GCC version is egcs-1.12 and XFree86 3.36-20 is installed.

Thank you for your help

[skw|d]

It sounds like you are using precompiled code somewhere that was not intended for your CPU. Make sure all the bits and pieces are compiled for your machine (binaries and libraries).

/skw|d

I first installed Mesa from some file I downloaded off of the internet. I then went and downloaded MEsaLib-3.2.1.tar.gz amd MesaDemos-3.3.zip. and installed them both. This time, I had to run make to install all of the files which made me feel better. However, upon recompiling, I still got the same message. Could my original install still be in there causing problems, and if so, how can I get rid of it?

Thanks,
Seth

[rts]

Originally posted by Raphaelo:
Could my original install still be in there causing problems, and if so, how can I get rid of it?


It's a possibility.

One thing to try is ldd:


[ryants@cr1016134-a opengl]$ ldd myprog
libGL.so.1 => /usr/X11R6/lib/libGL.so.1 (0x4009d000)
libGLU.so.1 => /usr/X11R6/lib/libGLU.so.1 (0x4028e000)
libglut.so.3 => /usr/X11R6/lib/libglut.so.3 (0x402ac000)

Now check to make sure that these three
things are pointing to the right thing.
You'll probably have to follow a few
symlinks:

[ryants@cr1016134-a opengl]$ ls -l /usr/X11R6/lib/libGL.so.1
lrwxrwxrwx 1 root root 19 Jul 21 00:02 /usr/X11R6/lib/libGL.so.1 -> libGL.so.1.2.030201*

if things are not pointing to the right
things, then delete the wrong things,
install the right things, and run
"ldconfig"

Hope this helps