Opengl - linux development

[weasel]

hello.. i'm running Mandrake 8.1 on a DELL Inspiron8000, and am trying to compile a simple OpenGL app (using SDL) however, on compilation i get errors stating none of the gl functions are defined. i can't find the gl.h files anywhere... i installed MESA4.0, still no luck.. what files am i missing (if any) and what #includes for the GL libraries should be in the code?

thanks in advance

[weasel]

sorry, just as i posted it, i noticed i did have the header files in /usr/X11R6/include/GL/gl.h

but somehow on the gcc command, they aren;t picked up. i assume it's a #inlcude error? or a incorrect./missing path setting..

again.. thanks

[jcgp]

Libraries must be found at:
1) compile time;
2) link time;
3) run time;

1) you must have something as -I/blabla/blabla/include in your compile directive.

2) you must have something as -L/blabla/blabla/lib
in your link directive.

3) you can:
i) add /blabla/blabla/lib to /etc/ld.so.conf and then run (as root) /sbin/ldconfig
ii) add /blabla/blabla/lib to the path of LD_LIBRARY_PATH. This is an environment variable usually defined in .bash_profile, for each user.
iii) make a symbolic link to /usr/lib or /usr/local/lib (better), for example, a place where the system will try to find the libraries.
iv) use ldd: ldd executable<Return> will tell you the libraries and paths that the executable needs to run.

Can you write, what is the best way, to compile a program with the libs included (at compile and link time)? I try and try and try, but it won`t compile. If you can post an example, it would be great. Can I compile a programm with the GLX Extensions, or do i have to rewrite my programm with GLX Instructions???

Thanks!!

[weasel]

thanks to all.. with some help and looking around i found that i needed this to compile it successfully

gcc -o output file.cpp file1.cpp -L/usr/X11R6/include -lSDL -lGL -lGLU

hope that can help others to...

thanks again

[jide]

hello

sorry, you may attend something else...

Are you tin weasel the mandrake expert ?

[weasel]

nah.. but i wish i was... however, i do run mandrake.. must be a weasel thing