Freeglut & MinGW!!!

[lmsmi1]

I'm about to flip out over this crap! I can't find a single answer to my question anywhere on Google, I can't compile Freeglut to a DLL to be used with MinGW, I can't make the teapot example because I have no DLL, etc, etc.

I've downloaded the latest stable freeglut release, and can't compile the dang souce to a DLL! How the hell do you fix this?!

[Computergeek01]

Did you see this guys page linked a little further down? http://www.transmissionzero.co.uk/software/freeglut-devel/ It only looks to be one minor release behind. Might be worth a shot.

[lmsmi1]

I still get a bunch of undefined reference errors even when statically linked with the freeglut dll.

[Computergeek01]

Errors such as ...

[lmsmi1]

Such as:

.objs\src\freeglut_display.o:freeglut_display.c:(.text+0xfd): undefined reference to `glFlush@0'
.objs\src\freeglut_ext.o:freeglut_ext.c:(.text+0x157d): undefined reference to `wglGetProcAddress@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x18c): undefined reference to `glPushClientAttrib@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x1a3): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x1ba): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x1d1): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x1e8): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x1ff): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x216): more undefined references to `glPixelStorei@8' follow
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x26e): undefined reference to `glBitmap@28'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x276): undefined reference to `glPopClientAttrib@0'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x2e9): undefined reference to `glPushClientAttrib@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x300): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x317): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x32e): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x345): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x35c): undefined reference to `glPixelStorei@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x373): more undefined references to `glPixelStorei@8' follow
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x3cc): undefined reference to `glBitmap@28'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x445): undefined reference to `glBitmap@28'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x47e): undefined reference to `glPopClientAttrib@0'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x698): undefined reference to `glBegin@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x6d1): undefined reference to `glVertex2f@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x6e6): undefined reference to `glEnd@0'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x6f2): undefined reference to `glBegin@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x72b): undefined reference to `glVertex2f@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x740): undefined reference to `glEnd@0'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x777): undefined reference to `glTranslatef@12'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x819): undefined reference to `glTranslatef@12'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x865): undefined reference to `glBegin@4'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x89e): undefined reference to `glVertex2f@8'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x8b3): undefined reference to `glEnd@0'
.objs\src\freeglut_font.o:freeglut_font.c:(.text+0x8f3): undefined reference to `glTranslatef@12'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0xac): undefined reference to `glBegin@4'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0xe9): undefined reference to `glNormal3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x115): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x13e): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x16a): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x19b): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x1a3): undefined reference to `glEnd@0'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x1af): undefined reference to `glBegin@4'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x1ec): undefined reference to `glNormal3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x21d): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x249): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x272): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x29e): undefined reference to `glVertex3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x2a6): undefined reference to `glEnd@0'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x2b2): undefined reference to `glBegin@4'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x2ef): undefined reference to `glNormal3d@24'
.objs\src\freeglut_geometry.o:freeglut_geometry.c:(.text+0x320): undefined reference to `glVertex3d@24'

[Computergeek01]

Those are all OpenGL functions. Functions for FreeGlut are all prefixed with 'glut*'. Sorry it took me so long to respond, busy day at work today.

[lmsmi1]

So I need to either/or link to the OpenGL ("opengl32.dll") lib, or include OpenGL headers. Which one?

[Computergeek01]

Undefined reference means the function was not defined, these functions are exported from "opengl32.dll" so you would need to link to the appropriate library for your compiler.

[lmsmi1]

Now the only errors are:

.objs\src\freeglut_init.o:freeglut_init.c:(.text+0x29e): undefined reference to `timeBeginPeriod@4'
.objs\src\freeglut_init.o:freeglut_init.c:(.text+0x50a): undefined reference to `timeEndPeriod@4'
.objs\src\freeglut_joystick.o:freeglut_joystick.c:(.text+0xdd): undefined reference to `joyGetPosEx@8'
.objs\src\freeglut_joystick.o:freeglut_joystick.c:(.text+0x890): undefined reference to `joyGetDevCapsA@12'
.objs\src\freeglut_main.o:freeglut_main.c:(.text+0x407): undefined reference to `timeGetTime@0'
C:\MinGW\lib/libmingw32.a(main.o):main.c:(.text.startup+0xa7): undefined reference to `WinMain@16'

[Computergeek01]

I feel like I already know the answer but is 'freeglut_init.c' user defined? I don't seem to have a copy of it although it is referenced in 'freeglut_ext.h'.

EDIT: Also those functions aren't exported from opengl32.dll, freeglut.dll or glew32.dll.

[lmsmi1]

So do I just remove them from the file?

[Computergeek01]

You could try it. But where did you find them?

[lmsmi1]

The original freeGLUT VCXPROJ is imported to Code::Blocks 12.11. I don't know where they came from...

[Computergeek01]

I'll try to find them.

[lmsmi1]

Okay, thanks. I've actually traced them to Winmm.lib and Mmsystem.h. However, WinMain's function is missing. What? Isn't it the full FreeGLUT source code?

[Computergeek01]

What do you mean when you say "WinMain's function is missing"? The entry point of the program(main(), WinMain(), DLL_Main(), DriverEntry() etc...) is defined when you compile it. If you're using an IDE then you probably chose a Windows style application or somthing to that effect. You need to define "WinMain()" instead of "main()" as your entry point, here is the definition: http://msdn.microsoft.com/en-us/library/windows/desktop/ms633559(v=vs.85).aspx
This is odd because every IDE I've seen provides a template that would have had the basic WinMain() stuff filled out already.

It sounds like your project wants to use the WinAPI to provide the drawing context. Do you know how to write a Windows app?

[lmsmi1]

Yes, I do know how to write Win32 Applications in C++. However, my project is currently a GUI application, frame based. Do I need to change this to something else?

[Computergeek01]

I'm sorry, I think I'm lost. Which error are we working on now?

[lmsmi1]

The only current errors is this:

C:\MinGW\lib/libmingw32.a(main.o):main.c:(.text.startup+0xa7): undefined reference to `WinMain@16'

[lmsmi1]

Here's the code I have. Uhm, I guess I use "freeglut_teapot.c" (the code below) as a header?

/*
 * freeglut_teapot.c
 *
 * Teapot(tm) rendering code.
 *
 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
 * Written by Pawel W. Olszta, <[e-mail]>
 * Creation date: Fri Dec 24 1999
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/*
 * Original teapot code copyright follows:
 */

/*
 * (c) Copyright 1993, Silicon Graphics, Inc.
 *
 * ALL RIGHTS RESERVED
 *
 * Permission to use, copy, modify, and distribute this software
 * for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies and that
 * both the copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Silicon
 * Graphics, Inc. not be used in advertising or publicity
 * pertaining to distribution of the software without specific,
 * written prior permission.
 *
 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
 * "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
 * OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
 * EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
 * ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
 * INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
 * SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
 * NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
 * OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 * US Government Users Restricted Rights
 *
 * Use, duplication, or disclosure by the Government is subject to
 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
 * (c)(1)(ii) of the Rights in Technical Data and Computer
 * Software clause at DFARS 252.227-7013 and/or in similar or
 * successor clauses in the FAR or the DOD or NASA FAR
 * Supplement.  Unpublished-- rights reserved under the copyright
 * laws of the United States.  Contractor/manufacturer is Silicon
 * Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
 * 94039-7311.
 *
 * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
 */

#ifdef __MINGW32__
#define APIENTRY __stdcall
#define CALLBACK __stdcall
#endif

#include <GL/freeglut.h>
#include <Mmsystem.h>
#include "freeglut_internal.h"
#include "freeglut_teapot_data.h"

/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */


static void fghTeapot( GLint grid, GLdouble scale, GLenum type )
{
#if defined(_WIN32_WCE)
		int i, numV=sizeof(strip_vertices)/4, numI=sizeof(strip_normals)/4;
#else
    double p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
    long i, j, k, l;
#endif

    glPushAttrib( GL_ENABLE_BIT | GL_EVAL_BIT );
    glEnable( GL_AUTO_NORMAL );
    glEnable( GL_NORMALIZE );
    glEnable( GL_MAP2_VERTEX_3 );
    glEnable( GL_MAP2_TEXTURE_COORD_2 );

    glPushMatrix();
    glRotated( 270.0, 1.0, 0.0, 0.0 );
    glScaled( 0.5 * scale, 0.5 * scale, 0.5 * scale );
    glTranslated( 0.0, 0.0, -1.5 );

#if defined(_WIN32_WCE)
    glRotated( 90.0, 1.0, 0.0, 0.0 );
    glBegin( GL_TRIANGLE_STRIP );

    for( i = 0; i < numV-1; i++ )
    {
        int vidx = strip_vertices[i],
            nidx = strip_normals[i];

        if( vidx != -1 )
        {
            glNormal3fv( normals[nidx]  );
            glVertex3fv( vertices[vidx] );
        }
        else
        {
            glEnd();
            glBegin( GL_TRIANGLE_STRIP );
        }
    }

    glEnd();
#else
    for (i = 0; i < 10; i++) {
      for (j = 0; j < 4; j++) {
        for (k = 0; k < 4; k++) {
          for (l = 0; l < 3; l++) {
            p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
            q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
            if (l == 1)
              q[j][k][l] *= -1.0;
            if (i < 6) {
              r[j][k][l] =
                cpdata[patchdata[i][j * 4 + (3 - k)]][l];
              if (l == 0)
                r[j][k][l] *= -1.0;
              s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
              if (l == 0)
                s[j][k][l] *= -1.0;
              if (l == 1)
                s[j][k][l] *= -1.0;
            }
          }
        }
      }

      glMap2d(GL_MAP2_TEXTURE_COORD_2, 0.0, 1.0, 2, 2, 0.0, 1.0, 4, 2,
        &tex[0][0][0]);
      glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
        &p[0][0][0]);
      glMapGrid2d(grid, 0.0, 1.0, grid, 0.0, 1.0);
      glEvalMesh2(type, 0, grid, 0, grid);
      glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
        &q[0][0][0]);
      glEvalMesh2(type, 0, grid, 0, grid);
      if (i < 6) {
        glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
          &r[0][0][0]);
        glEvalMesh2(type, 0, grid, 0, grid);
        glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
          &s[0][0][0]);
        glEvalMesh2(type, 0, grid, 0, grid);
      }
    }
#endif  /* defined(_WIN32_WCE) */

    glPopMatrix();
    glPopAttrib();
}


/* -- INTERFACE FUNCTIONS -------------------------------------------------- */

/*
 * Renders a beautiful wired teapot...
 */
void FGAPIENTRY glutWireTeapot( GLdouble size )
{
    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTeapot" );
    /* We will use the general teapot rendering code */
    fghTeapot( 10, size, GL_LINE );
}

/*
 * Renders a beautiful filled teapot...
 */
void FGAPIENTRY glutSolidTeapot( GLdouble size )
{
    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTeapot" );
    /* We will use the general teapot rendering code */
    fghTeapot( 7, size, GL_FILL );
}

/*** END OF FILE ***/