[xcrysden] [Partially solved] Install fails at startup in function glLightfv()

[Jim Parker]

After further troubleshooting, I got the semi-shared version to run.

However, I'm not sure why it works now.  I had made several changes to
the system to attempt to fix the libGL crash, including upgrading the
kernel

$> sudo apt-get upgrade kernel

and installing libgl1-mesa-glx libglu1-mesa-dev and others that I lost track of.

I guess I'd like to know what is the exact difference between the
shared and semi-shared versions since one works and the other doesn't?

Cheers,
--Jim



On 12/8/11, Jim Parker <jimparker96313 at gmail.com> wrote:
> Hello,
>   I have used this program on a Windows machine, but I am trying to
> install on a Linux box.  Normally, I find it harder to compile these
> kinds of codes on Windows vice linux, so this is a first for me...
>
> I have tried installing the shared/semi-shared and source versions,
> and yes I cleanly separated the different versions...
>
> All crash at the same point during start up.  When I run with
> $> xcrysden -d
>
> I get to the line
> Executing: XCrySDen-1.5.24-src/bin/ftnunit
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00596c06 in glLightfv() from /usr/lib/mesa/libGL.so.1
>
> I compiled the source code with debugging enabled and tracked the
> error to line 408 in C/lighting.c
>
> line 408:  glLightfv(_LIGHT[il], GL_AMBIENT, light[il].ambient)
>
> At this point I am stumped,  the value of il = 0, which would indicate
> this command fails the first time it is called.
>
> My system is an Ubuntu 10.04 LTS distro
> Intel 945GM graphics card
>
> Any suggestions would be appreciated.
>
> Cheers,
> --Jim
>