Completely new to openGL here. Running Mandrake Linux on a PC with GCC.
I’ve got MESA installed, and it looks like I’m ready to go. The compiler doesn’t seem to complain about not finding the calls I reference, but then generates a bizzare message about not being able to find some temp file
Here’s the source:
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
void main(int argc, char **argv)
{
glBegin(GL_LINES);
glVertex2i(0,0);
glVertex2i(1,0);
glVertex2i(1,1);
glvertex2i(0,1);
glEnd();
}
And here’s the error output:
[erik-k@erik opengl]$ gcc -o hello helloworld.c
helloworld.c: In function main': helloworld.c:21: warning: return type ofmain’ is not int' /home/erik-k/tmp/ccc0mOMC.o(.text+0x16): In functionmain’:
: undefined reference to glBegin' /home/erik-k/tmp/ccc0mOMC.o(.text+0x25): In functionmain’:
: undefined reference to glVertex2i' /home/erik-k/tmp/ccc0mOMC.o(.text+0x34): In functionmain’:
: undefined reference to glVertex2i' /home/erik-k/tmp/ccc0mOMC.o(.text+0x43): In functionmain’:
: undefined reference to glVertex2i' /home/erik-k/tmp/ccc0mOMC.o(.text+0x52): In functionmain’:
: undefined reference to glvertex2i' /home/erik-k/tmp/ccc0mOMC.o(.text+0x5a): In functionmain’:
: undefined reference to `glEnd’
collect2: ld returned 1 exit status
I have no idea what this means; The program sucessfully includes GL/gl.h, GL/glu.h, and GL/glut.h, and I can sucessfully compile and use openGL programs on my computer.
Can someone point me to an openGL tutorial for LINUX, on a PC with MESA? Just reading MAN pages won’t cut it forever.