Help with installing the GFLW library :S

[yoni1306]

I'm just miserable with this OPENGL libraries.
Every library that i try to install, I don't succeed.
I chose to start using OPENGL because I found it interesting and now as the time pass I regret this decision because I don't even manage to install even one of it's libraries -_-.

I need help from someone that can help me catch up with this things so I can start programming ASAP.

I read the guide to install the library and I didn't understand what I need to compile!!!

I want someone to write simple and understandable guide for me how to install this library...I FEEL LOST!!!


I would be glad if someone will do that.Thanx.

[Zengar]

Well, for starters you should tell us what platform are you working on and what programming language do you use. And GLFW has a very simple and intuitive project structure with all makefiles you need.

[yoni1306]

I am writing under Windows using C programming language.
I did not understand how to install all these libraries :\

[dletozeun]

What IDE are you working on? Visual studio ?

I have really nothing to do to install this library, just copy and paste. All is here (http://glfw.sourceforge.net/). Just download the glfw-2.6.bin.WIN32.zip windows binaries package in the download section and paste the lib and header files in the good directories in your development environment.

[yoni1306]

DEV C++

[ZbuffeR]

I am pretty sure there is a devpack for GLFW in dev-c++, you should be able to easily get through the packages manager integrated with the IDE.

PS: there it is :
http://devpaks.org/details.php?devpak=72

[yoni1306]

Thanks a lot...I will check this out.

[yoni1306]

OK I installed this GLFW package for DEV C++.
Now I have created a source file with this code:

#include <stdlib.h> // For malloc() etc.
#include <stdio.h> // For printf(), fopen() etc.
#include <math.h> // For sin(), cos() etc.
#include <GL/glfw.h> // For GLFW, OpenGL and GLU


//----------------------------------------------------------------------
// Draw() - Main OpenGL drawing function that is called each frame
//----------------------------------------------------------------------

void Draw( void )
{
int width, height; // Window dimensions
double t; // Time (in seconds)

// Get current time
t = glfwGetTime();

// Get window size
glfwGetWindowSize( &width, &height );

// Make sure that height is non-zero to avoid division by zero
height = height < 1 ? 1 : height;

// Set viewport
glViewport( 0, 0, width, height );

// Clear color and depht buffers
glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

// Set up projection matrix
glMatrixMode( GL_PROJECTION ); // Select projection matrix
glLoadIdentity(); // Start with an identity matrix
gluPerspective( // Set perspective view
65.0, // Field of view = 65 degrees
(double)width/(double)height, // Window aspect (assumes square pixels)
1.0, // Near Z clipping plane
100.0 // Far Z clippling plane
);

// Set up modelview matrix
glMatrixMode( GL_MODELVIEW ); // Select modelview matrix
glLoadIdentity(); // Start with an identity matrix
gluLookAt( // Set camera position and orientation
0.0, 0.0, 10.0, // Camera position (x,y,z)
0.0, 0.0, 0.0, // View point (x,y,z)
0.0, 1.0, 0.0 // Up-vector (x,y,z)
);

// Here is where actual OpenGL rendering calls would begin...
}


//----------------------------------------------------------------------
// main() - Program entry point
//----------------------------------------------------------------------

int main( int argc, char **argv )
{
int ok; // Flag telling if the window was opened
int running; // Flag telling if the program is running

// Initialize GLFW
glfwInit();

// Open window
ok = glfwOpenWindow(
640, 480, // Width and height of window
8, 8, 8, // Number of red, green, and blue bits for color buffer
8, // Number of bits for alpha buffer
24, // Number of bits for depth buffer (Z-buffer)
0, // Number of bits for stencil buffer
GLFW_WINDOW // We want a desktop window (could be GLFW_FULLSCREEN)
);

// If we could not open a window, exit now
if( !ok )
{
glfwTerminate();
return 0;
}

// Set window title
glfwSetWindowTitle( "My OpenGL program" );

// Enable sticky keys
glfwEnable( GLFW_STICKY_KEYS );

// Main rendering loop
do
{
// Call our rendering function
Draw();

// Swap front and back buffers (we use a double buffered display)
glfwSwapBuffers();

// Check if the escape key was pressed, or if the window was closed
running = !glfwGetKey( GLFW_KEY_ESC ) &&
glfwGetWindowParam( GLFW_OPENED );
}
while( running );

// Terminate GLFW
glfwTerminate();

// Exit program
return 0;
}

and i get linker error for undefined reference to GLFW functions.
What is the problem here?

[ZbuffeR]

You did not forget to add the libs to the linker options, right ?

-lglfw -lopengl32 -lglu32

As MinGW is used by dev-c++ for actual compile and link stages, see its section here :
http://glfw.sourceforge.net/tutorials/lesson00/lesson00.html