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POWhy would i be getting 4 instances of "undefined reference to `gluErrorString@4'"
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copied!<p>heres my code. an opengl4.0 tutorial:</p> <pre><code>#include <stdlib.h> #include <stdio.h> #include <string.h> #define GLEW_STATIC #include "GL/glew.h" #include <GL/freeglut.h> #define WINDOW_TITLE_PREFIX "Chapter 2" int CurrentWidth = 800, CurrentHeight = 600, WindowHandle = 0; unsigned FrameCount = 0; GLuint VertexShaderId, FragmentShaderId, ProgramId, VaoId, VboId, ColorBufferId; const GLchar* VertexShader = { "#version 400\n"\ "layout(location=0) in vec4 in_Position;\n"\ "layout(location=1) in vec4 in_Color;\n"\ "out vec4 ex_Color;\n"\ "void main(void)\n"\ "{\n"\ " gl_Position = in_Position;\n"\ " ex_Color = in_Color;\n"\ "}\n" }; const GLchar* FragmentShader = { "#version 400\n"\ "in vec4 ex_Color;\n"\ "out vec4 out_Color;\n"\ "void main(void)\n"\ "{\n"\ " out_Color = ex_Color;\n"\ "}\n" }; void Initialize(int, char*[]); void InitWindow(int argc, char* argv[]); void ResizeFunction(int, int); void RenderFunction(void); void TimerFunction(int); void IdleFunction(void); void Cleanup(void); void CreateVBO(void); void DestroyVBO(void); void CreateShaders(void); void DestroyShaders(void); int main(int argc, char* argv[]) { Initialize(argc, argv); glutMainLoop(); exit(EXIT_SUCCESS); } void Initialize(int argc, char* argv[]) { GLenum GlewInitResult; InitWindow(argc, argv); GlewInitResult = glewInit(); if (GLEW_OK != GlewInitResult) { fprintf( stderr, "ERROR: %s\n", glewGetErrorString(GlewInitResult) ); exit(EXIT_FAILURE); } fprintf( stdout, "INFO: OpenGL Version: %s\n", glGetString(GL_VERSION) ); CreateShaders(); CreateVBO(); glClearColor(0.0f, 0.0f, 0.0f, 0.0f); } void InitWindow(int argc, char* argv[]) { glutInit(&argc, argv); glutInitContextVersion(4, 0); glutInitContextFlags(GLUT_FORWARD_COMPATIBLE); glutInitContextProfile(GLUT_CORE_PROFILE); glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_GLUTMAINLOOP_RETURNS); glutInitWindowSize(CurrentWidth, CurrentHeight); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA); WindowHandle = glutCreateWindow(WINDOW_TITLE_PREFIX); if(WindowHandle < 1) { fprintf( stderr, "ERROR: Could not create a new rendering window.\n" ); exit(EXIT_FAILURE); } glutReshapeFunc(ResizeFunction); glutDisplayFunc(RenderFunction); glutIdleFunc(IdleFunction); glutTimerFunc(0, TimerFunction, 0); glutCloseFunc(Cleanup); } void ResizeFunction(int Width, int Height) { CurrentWidth = Width; CurrentHeight = Height; glViewport(0, 0, CurrentWidth, CurrentHeight); } void RenderFunction(void) { ++FrameCount; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glDrawArrays(GL_TRIANGLES, 0, 3); glutSwapBuffers(); glutPostRedisplay(); } void IdleFunction(void) { glutPostRedisplay(); } void TimerFunction(int Value) { if (0 != Value) { char* TempString = (char*) malloc(512 + strlen(WINDOW_TITLE_PREFIX)); sprintf( TempString, "%s: %d Frames Per Second @ %d x %d", WINDOW_TITLE_PREFIX, FrameCount * 10, CurrentWidth, CurrentHeight ); glutSetWindowTitle(TempString); free(TempString); } FrameCount = 0; glutTimerFunc(100, TimerFunction, 1); } void Cleanup(void) { DestroyShaders(); DestroyVBO(); } void CreateVBO(void) { GLfloat Vertices[] = { -0.8f, -0.8f, 0.0f, 1.0f, 0.0f, 0.8f, 0.0f, 1.0f, 0.8f, -0.8f, 0.0f, 1.0f }; GLfloat Colors[] = { 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f }; GLenum ErrorCheckValue = glGetError(); glGenVertexArrays(1, &VaoId); glBindVertexArray(VaoId); glGenBuffers(1, &VboId); glBindBuffer(GL_ARRAY_BUFFER, VboId); glBufferData(GL_ARRAY_BUFFER, sizeof(Vertices), Vertices, GL_STATIC_DRAW); glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(0); glGenBuffers(1, &ColorBufferId); glBindBuffer(GL_ARRAY_BUFFER, ColorBufferId); glBufferData(GL_ARRAY_BUFFER, sizeof(Colors), Colors, GL_STATIC_DRAW); glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, 0, 0); glEnableVertexAttribArray(1); ErrorCheckValue = glGetError(); if (ErrorCheckValue != GL_NO_ERROR) { fprintf( stderr, "ERROR: Could not create a VBO: %s \n", gluErrorString(ErrorCheckValue) ); exit(-1); } } void DestroyVBO(void) { GLenum ErrorCheckValue = glGetError(); glDisableVertexAttribArray(1); glDisableVertexAttribArray(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glDeleteBuffers(1, &ColorBufferId); glDeleteBuffers(1, &VboId); glBindVertexArray(0); glDeleteVertexArrays(1, &VaoId); ErrorCheckValue = glGetError(); if (ErrorCheckValue != GL_NO_ERROR) { fprintf( stderr, "ERROR: Could not destroy the VBO: %s \n", gluErrorString(ErrorCheckValue) ); exit(-1); } } void CreateShaders(void) { GLenum ErrorCheckValue = glGetError(); VertexShaderId = glCreateShader(GL_VERTEX_SHADER); glShaderSource(VertexShaderId, 1, &VertexShader, NULL); glCompileShader(VertexShaderId); FragmentShaderId = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(FragmentShaderId, 1, &FragmentShader, NULL); glCompileShader(FragmentShaderId); ProgramId = glCreateProgram(); glAttachShader(ProgramId, VertexShaderId); glAttachShader(ProgramId, FragmentShaderId); glLinkProgram(ProgramId); glUseProgram(ProgramId); ErrorCheckValue = glGetError(); if (ErrorCheckValue != GL_NO_ERROR) { fprintf( stderr, "ERROR: Could not create the shaders: %s \n", gluErrorString(ErrorCheckValue) ); exit(-1); } } void DestroyShaders(void) { GLenum ErrorCheckValue = glGetError(); glUseProgram(0); glDetachShader(ProgramId, VertexShaderId); glDetachShader(ProgramId, FragmentShaderId); glDeleteShader(FragmentShaderId); glDeleteShader(VertexShaderId); glDeleteProgram(ProgramId); ErrorCheckValue = glGetError(); if (ErrorCheckValue != GL_NO_ERROR) { fprintf( stderr, "ERROR: Could not destroy the shaders: %s \n", gluErrorString(ErrorCheckValue) ); exit(-1); } } </code></pre> <p>its the full code to what i have in code blocks using mingw that is running on windows 7 x64. its chapter 2 of openglbook.com. its supposed to implement im implementing glew32s, freeglut and opengl in the project link settings (not compiler) and in that order. </p> <p>i hear running dynamically is better but i get a bunch of undefined glew command errors if i go dynamic. so i had to setup the "#define glew_static" with glew32s in the linker. </p> <p>what could be causing this?</p> <pre><code>-------------- Build: Debug in 40 (compiler: GNU GCC Compiler)--------------- mingw32-g++.exe -Wall -g -ID:\backup\funstuff\programming\freeglut\include -c D:\backup\funstuff\programming\40\main.cpp -o obj\Debug\main.o mingw32-g++.exe -o bin\Debug\40.exe obj\Debug\main.o -lglew32s -lfreeglut -lopengl32 Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" ' unrecognized obj\Debug\main.o: In function `Z9CreateVBOv': D:/backup/funstuff/programming/40/main.cpp:219: undefined reference to `gluErrorString@4' obj\Debug\main.o: In function `Z10DestroyVBOv': D:/backup/funstuff/programming/40/main.cpp:247: undefined reference to `gluErrorString@4' obj\Debug\main.o: In function `Z13CreateShadersv': D:/backup/funstuff/programming/40/main.cpp:278: undefined reference to `gluErrorString@4' obj\Debug\main.o: In function `Z14DestroyShadersv': D:/backup/funstuff/programming/40/main.cpp:305: undefined reference to `gluErrorString@4' collect2.exe: error: ld returned 1 exit status Process terminated with status 1 (0 minutes, 1 seconds) 4 errors, 1 warnings (0 minutes, 1 seconds) </code></pre> <p><em><strong></em>*</strong><em>edit</em><strong><em>*</em></strong></p> <p>I've downloaded wsys and installed mingw to a seperate directory and recompiled glew-1.9.0 and replaced the dll and libs. Still the same error, however without the ~~~~~~~~~~~>Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" ' unrecognized<~~~~~~~ warning. </p> <p>Which btw, was only present because the compiled DLL and libs from glews website were done on VisualC. </p>

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