When ever I compile my program, I get this: billnic[root]:/home/bblair/programs/myOpenGL> gcc glut2.cpp Undefined first referenced symbol in file glutInitWindowPosition /var/tmp/ccva0XrQ.o glTranslatef /var/tmp/ccva0XrQ.o glutSwapBuffers /var/tmp/ccva0XrQ.o glutCreateWindow /var/tmp/ccva0XrQ.o glutMainLoop /var/tmp/ccva0XrQ.o glViewport /var/tmp/ccva0XrQ.o sunOglCurrentContext /var/tmp/ccva0XrQ.o glMatrixMode /var/tmp/ccva0XrQ.o glShadeModel /var/tmp/ccva0XrQ.o glutDisplayFunc /var/tmp/ccva0XrQ.o glPopMatrix /var/tmp/ccva0XrQ.o sunOglCurPrimTablePtr /var/tmp/ccva0XrQ.o glutReshapeFunc /var/tmp/ccva0XrQ.o glHint /var/tmp/ccva0XrQ.o glClear /var/tmp/ccva0XrQ.o glutInitDisplayMode /var/tmp/ccva0XrQ.o glClearColor /var/tmp/ccva0XrQ.o gluLookAt /var/tmp/ccva0XrQ.o glBegin /var/tmp/ccva0XrQ.o glEnd /var/tmp/ccva0XrQ.o glFlush /var/tmp/ccva0XrQ.o glutInitWindowSize /var/tmp/ccva0XrQ.o glLoadIdentity /var/tmp/ccva0XrQ.o glutIdleFunc /var/tmp/ccva0XrQ.o gluPerspective /var/tmp/ccva0XrQ.o glPushMatrix /var/tmp/ccva0XrQ.o glClearDepth /var/tmp/ccva0XrQ.o glEnable /var/tmp/ccva0XrQ.o glutInit /var/tmp/ccva0XrQ.o glDepthFunc /var/tmp/ccva0XrQ.o glRotatef /var/tmp/ccva0XrQ.o ld: fatal: Symbol referencing errors. No output written to a.out collect2: ld returned 1 exit status billnic[root]:/home/bblair/programs/myOpenGL> And my program is this:#include #include #include #include #include #include /* For use with Solaris */ #include #include #include // User Defined Variables for the // inverted triangle/pyramid rednering float angle=0.0f; // Used To Rotate The Triangles int rot1, rot2; // Counter Variables void Resize(int w, int h) { // Prevent a divide by zero, when window is too short // (you cant make a window of zero width). if(h == 0){h = 1;} float ratio = 1.0* w / h; // Reset the coordinate system before modifying glMatrixMode(GL_PROJECTION); glLoadIdentity(); // Set the viewport to be the entire window glViewport(0, 0, w, h); // Set the correct perspective. gluPerspective(45,ratio,1,1000); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(0.0,0.0,5.0, 0.0,0.0,-1.0, 0.0f,1.0f,0.0f); } // Initial Settings for the Drawing void InitGL(void){ /* attributes */ glShadeModel(GL_SMOOTH); // Enable Smooth Shading glClearColor(0.0,0.0,0.0,0.5f); // Background Color Specified by the File glClearDepth(1.0f); // Depth Buffer Setup glEnable(GL_DEPTH_TEST); // Enables Depth Testing glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations } // End InitGL(); // Draws NeHe Graphic void DrawNeHe(void){ glLoadIdentity(); // Reset The Modelview Matrix glTranslatef (0.0f, 0.0f, -6.0f); // Translate 6 Units Into The Screen glRotatef (angle, 0.0f, 1.0f, 0.0f); // Rotate On The Y-Axis By angle for (rot1=0; rot1<2; rot1++) // 2 Passes { glRotatef(90.0f,0.0f,1.0f,0.0f); // Rotate 90 Degrees On The Y-Axis glRotatef(180.0f,1.0f,0.0f,0.0f); // Rotate 180 Degress On The X-Axis for (rot2=0; rot2<2; rot2++) // 2 Passes { glRotatef(180.0f,0.0f,1.0f,0.0f); // Rotate 180 Degrees On The Y-Axis glBegin (GL_TRIANGLES); // Begin Drawing Triangles glColor3f (1.f, 0.f, 0.f); glVertex3f( 0.0f, 1.0f, 0.0f); glColor3f (0.f, 1.f, 0.f); glVertex3f(-1.0f,-1.0f, 1.0f); glColor3f (0.f, 0.f, 1.f); glVertex3f( 1.0f,-1.0f, 1.0f); glEnd (); // Done Drawing Triangles } // End Inner For } // End Outer For // This is where all the drawing is done void renderScene(void) { // Clearing the depth buffer, otherwise the depth // buffer gets filled and nothing gets rendered glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Save the previous settings, in this case save // we''re refering to the camera settings. glPushMatrix(); // Drawing Code as Functions can be put here... DrawNeHe(); // Discard the modelling transformations // after this the matrix will have only the camera settings. glPopMatrix(); // Be sure the graphics buffer has been sent glFlush (); // Swapping the buffers causes the rendering above to be shown glutSwapBuffers(); // Finally pdate the angle for the next scene angle+=0.5f; } // End renderScene(); void main(int argc, char **argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA); glutInitWindowPosition(0,0); glutInitWindowSize(300,300); glutCreateWindow("Glut Version of NeHe Base Code"); InitGL(); glutDisplayFunc(renderScene); glutIdleFunc(renderScene); glutReshapeFunc(Resize); glutMainLoop(); } //End main(); As you can see I hard coded some of the includes, but why will it not compile? Am I forgetting something? I did everything that the Solaris Tutorial said to do... So what gives? Please hel... Thanks! John William Blair

For some reason the includes did not show up. Here they are again...

#include
#include
#include
#include
#include
#include

/* For use with Solaris */
#include
#include
#include

They still did not show! Must be something with the forum, so I removed the "<"">"''s

#include math.h
#include stdio.h
#include stdlib.h
#include iostream.h
#include fstream.h
#include string.h

/* For use with Solaris */
#include /usr/local/sparc_solaris/glut-3.7/include/GL/glut.h
#include /usr/openwin/share/include/GL/glu.h
#include /usr/openwin/share/include/GL/gl.h

The errors are _link_ errors. It seems like you are including the right headers but you do not link to any libraries. Perhaps something like this:
gcc glut2.cpp -lX11 -lXi -lXmu -lglut -lGL -lGLU -lm

Perhaps is it also better to use g++ instead of gcc since you are using C++.