The following is a basic polygon program written in C++ with Cbuilder5, and every time i compile or run it, i get the linker errors:
[Linker error] - Unresolved external ‘_Form1’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\PROJECT1.OBJ
[Linker error] - Unresolved external ‘TForm1::’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\PROJECT1.OBJ
If i run the DOS command line module(bcc32) i get these errors instead:
Unresolved external ‘glutInit’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutInitDisplayMode’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutInitWindowSize’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutInitWindowPosition’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutCreateWindow’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutDisplayFunc’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
Unresolved external ‘glutMainLoop’ referenced from C:\BORLAND\CBUILDER5\MYSOURCE\GLUT2.OBJ
FOLLOWING is the source code of the program:
#include <windows.h>
#include <gl/glut.h>
#include <stdlib.h>
void init(void);
void display(void);
int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(250, 250);
glutInitWindowPosition(100, 100);
glutCreateWindow(“hello”);
init();
glutDisplayFunc(display);
glutMainLoop();
return(0);
}
void init(void) {
glClearColor(0.0, 0.0, 0.0, 0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
}
void display(void) {
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0, 1.0, 1.0);
glBegin(GL_POLYGON);
glVertex3f(0.25, 0.25, 0.0);
glVertex3f(0.75, 0.25, 0.0);
glVertex3f(0.75, 0.75, 0.0);
glVertex3f(0.25, 0.75, 0.0);
glEnd();
glFlush();
}
I have already made sure i had all the necessary header, library and DLL files stored in the correct places(though perhaps i do not have a compatible set of them given that some have different creation dates[all 32bit format still]).
If you can tell me where to get a complete and updated set of the OpenGL(the 3 LIB, H & DLL) files, or if you can help me overcome this problem, as i am unsure if it is a C++ error or a Borland error, i would greatly appreciate it as i seem to be stumped with it, Thank you.