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Ygyaxthe3rd
Newbie (Posts: 38)

OpenGL help
18 Apr 2013 08:47:11 pm

I just started learning about OpenGL, and I've been trying to load an image using SOIL. I need help with resolving these error that pop up when I try building the project:

Code:




C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glBindTexture@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glDeleteTextures@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glGenTextures@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glReadPixels@28'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glBindTexture@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glBindTexture@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glGenTextures@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glBindTexture@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glBindTexture@8'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexParameteri@12'|


C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSOIL.a(SOIL.o):SOIL.c|| undefined reference to `glTexImage2D@36'|


||=== Build finished: 35 errors, 0 warnings (0 minutes, 1 seconds) ===|

This is the code I am using:

Code:




#include <SOIL.h>


#include <GL/gl.h>


#include <GL/glfw.h>








int main()


{


    int     width, height;


    int     frame = 0;


    bool    running = true;





    glfwInit();





    if( !glfwOpenWindow( 1600, 900, 0, 0, 0, 0, 0, 0, GLFW_FULLSCREEN ) )


    {


        glfwTerminate();


        return 0;


    }





    glfwSetWindowTitle("TextureTest");





    GLuint tex_2d = SOIL_load_OGL_texture (


        "TestImage.tga",


        SOIL_LOAD_AUTO,


        SOIL_CREATE_NEW_ID,


        SOIL_FLAG_MIPMAPS | SOIL_FLAG_INVERT_Y | SOIL_FLAG_NTSC_SAFE_RGB | SOIL_FLAG_COMPRESS_TO_DXT


    );





    {


        frame++;





        glfwGetWindowSize( &width, &height );


        height = height > 0 ? height : 1;





        glViewport( 0, 0, width, height );





        glClearColor( 1.0f, 1.0f, 1.0f, 1.0f );


        glClear( GL_COLOR_BUFFER_BIT );





        glMatrixMode( GL_PROJECTION );


        glLoadIdentity();


        glOrtho(0.0,width,height,0.0,-1.0,1.0);





        glfwSwapBuffers();


        





        // exit if ESC was pressed or window was closed


        running = !glfwGetKey(GLFW_KEY_ESC) && glfwGetWindowParam( GLFW_OPENED);


    }





    glfwTerminate();





    return 0;


}

I have the SOIL.h file in the Code::Blocks include folder, and the libSOIL.a file in the lib folder. The library file is linked to the compiler.

elfprince13
2
OVER NINE THOUSAND! (Posts: 11872)

18 Apr 2013 08:55:42 pm

Looks like you aren't linking against the OpenGL libraries.

Ygyaxthe3rd
Newbie (Posts: 38)

18 Apr 2013 10:29:57 pm

How would I go about doing that?

elfprince13
2
OVER NINE THOUSAND! (Posts: 11872)

18 Apr 2013 10:33:46 pm

You need to add linker flags for GLFW at the least, and probably also GL. I don't know what those libraries or flags look like on your system, but I'm sure Google can tell you. Google "linking GL and GLFW from MinGW and codeblocks" or something along those lines.

Ygyaxthe3rd
Newbie (Posts: 38)

18 Apr 2013 11:00:08 pm

I got it to work! I had the GLFW libraries linked, but it turns out that the GL library was not linked. I had assumed it was before because I had made some test programs using some of the functions, so its puzzling that those worked. Thank you for the help!

elfprince13
2
OVER NINE THOUSAND! (Posts: 11872)

18 Apr 2013 11:07:53 pm

Good work! Smile

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