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glew链接问题qt creator qmake

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I am trying to get a project working with SDL2, assimp, opengl, and glew and cannot get glew to link properly (almost a duplicate but a more comprehensive question and answer, I think).

我的qmake .pro文件:

CONFIG += console
CONFIG -= app_bundle
CONFIG -= qt

HEADERS += \
    objloader.h \
    display.h \
    eventloop.h \
    shader.h \
    texture.h

SOURCES += main.cpp \
    objloader.cpp \
    display.cpp \
    eventloop.cpp \
    shader.cpp \
    texture.cpp


INCLUDEPATH +=  "C:/code middleware/glew-1.12.0/include/" \
                "C:\code middleware\glm\\" \
                 "C:\code middleware\SDL2-2.0.3\include\\" \
                "C:\Users\smart_000\Desktop\assimp\include\\"

DEPENDPATH += "C:/code middleware/glew-1.10.0/bin/Release\Win32/" \
                "C:\code middleware\SDL2-2.0.3\lib/x86/" \
                "C:/Users/smart_000/Desktop/assimp/bin/" \
                "C:/code middleware/glew-1.12.0/lib/Release/Win32/" \
                "C:/code middleware/glew-1.12.0/bin/Release/Win32/"

LIBS += -L"C:\code middleware\SDL2-2.0.3\lib\x86" -lSDL2main -lSDL2
LIBS += -L"C:/Users/smart_000/Desktop/assimp/lib/" -lassimp.dll -lzlib
LIBS += -lopengl32
LIBS += -lglu32
LIBS += -L"C:/code middleware/glew-1.12.0/lib/Release/Win32/" -lglew32 -lglu32

我得到的链接器错误:linker errors

What I have tried already:

  • 检查文件路径问题('/'和''文件名中的东西和空格等)

  • 动态和静态链接(是的,我定义 GLEW_STATIC 我需要的地方,我链接到-lglew32s等)

  • SDL的东西:在它上面弄乱并定义'NO_SDL_GLEXT'

  • 制作测试程序并尝试将其与g链接(我在尝试静态时使用了-static标志,并在需要它们的文件之后放置链接器标志) . 这些错误与qt减去警告相同 .

  • 将glew源代码直接放在我的项目中并构建它(完全相同的错误)--- The issues were eerily similar and made no sense to me . 我已经注释掉了qmake的东西并重新运行了qmake;我不知道如果我像我一样把它放在我的项目中,我会得到像这样的链接器错误 .

  • 我的更改后运行qmake,哈哈

  • 移动'LIBS'和'DEPENDPATH'并绝望地添加'CONFIG += opengl'

  • 使用调试和发布版本进行混乱 .

What I haven't tried:

  • 将库和事物移动到系统路径

  • MAKING SURE THE LIBRARIES WERE BUILT FOR MINGW!

相关的代码(我知道它很可怕;当我遇到这些问题时,我只是在乱砍):

“main.cpp”:

#include <GL/glew.h>
#include <iostream>
#include <SDL.h>
#include <objloader.h>
#include "display.h"
#include "eventloop.h"

Display* display = NULL;

void callback()
{
    std::cout << "yay" << std::endl;
    display->Swap();
}

int main(int argc, char* argv[])
{
    UShortVector indices;
    Vec3Vector vertices;
    Vec2Vector uvs;
    Vec3Vector normals;

    bool success = ObjLoader::loadObj("cube.obj", indices, vertices, uvs, normals);
    display = new Display();

    EventLoop eventLoop;
    eventLoop.SetLoopCallback(&callback);
    display->Create("yay");

    eventLoop.Start();

    return 0;
}

“display.h”

#ifndef DISPLAY_H
#define DISPLAY_H
#include <GL/glew.h>
#include <SDL.h>
#include <iostream>

class Display
{
public:
    Display();
    ~Display();

    void Create(const char* title);
    void Swap();

    SDL_Window* window_ = NULL;
    SDL_GLContext glContext_;
};

#endif // DISPLAY_H

“shader.h”

#ifndef SHADER_H
#define SHADER_H
#include <GL/glew.h>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <memory.h>

class Shader
{
public:
    GLuint LoadShaders(const char * vertex_file_path, const char * fragment_file_path);
private:
    Shader();
    ~Shader();
};

#endif // SHADER_H

“shader.cpp”

#include "shader.h"

Shader::Shader()
{

}

Shader::~Shader()
{

}

GLuint Shader::LoadShaders(const char * vertexShaderPath, const char * fragmentShaderPath)
{
    FILE* vertexFile = fopen(vertexShaderPath, "r");
    FILE* fragmentFile = fopen(fragmentShaderPath, "r");

    if(!vertexFile || !fragmentFile)
    {
        if(!vertexFile)
        {
            perror("could not open the vertex shader file");
        }
        if(!fragmentFile)
        {
            perror("could not open the fragment shader file");
        }
    }

    GLuint programID = glCreateProgram();
    GLuint vertShader = glCreateShader(GL_VERTEX_SHADER);
    GLuint fragShader = glCreateShader(GL_FRAGMENT_SHADER);

    const size_t MAX_LINE_LENGTH = 120;
    char line[MAX_LINE_LENGTH];

    std::vector<GLchar*> vertShaderSource;
    std::vector<GLchar*> fragmentShaderSource;

    while(fgets(line, MAX_LINE_LENGTH, vertexFile) != NULL)
    {
        vertShaderSource.push_back((GLchar*)line);
        memset((void*)line, '\0', sizeof(line));
    }

    while(fgets(line, MAX_LINE_LENGTH, fragmentFile) != NULL)
    {
        fragmentShaderSource.push_back((GLchar*)line);
        memset((void*)line, '\0', sizeof(line));
    }

    glShaderSource(vertShader, vertShaderSource.size(), (const GLchar**)&vertShaderSource, NULL);
    glShaderSource(fragShader, fragmentShaderSource.size(), (const GLchar**)&fragmentShaderSource, NULL);

    // doesn't do anything at the moment, I know. It should still compile though.
    return programID;
}

1 回答

  • 0

    在我发布问题后,我发现了问题 . 令人尴尬的是,这是我在使用assimp之前遇到的一个问题(虽然我刚才意识到为什么用cmake重新构建它) .

    The hallmarks:

    • 当您知道正在找到库时,库中出现了奇怪的链接器错误 .

    • 您主要在Windows系统上工作:)

    The solution:

    • 检查与Qt creator Vs一起使用的构建工具包 . 您正在使用的库 .

    我只使用了MINGW,我的libs是使用MSVC编译器编译的

    • 您正在寻找的库是.a文件:特别是lib .a . 在这种情况下,我正在寻找libglew32.dll.a < - 注意.dll在那里是否是一个dll导入库或者像libglew32s.a这样的静态库 - 注意静态的s .

    • 去哪里获取权利库:

    - 到这里建造它:用mingw在窗户上建筑 .

    - 到这里下载我做过的预制版本(旧版glew):https://launchpad.net/glew-cmake/ milestone / 1.10.0

    我使用的下载链接: glew-gcc-1.10.0-win32.zip (md5) Glew-Cmake 1.10.0 Binaries (MinGW) < - 我试图发布图片,但显然,我还不够酷 .

    我更新并正在使用的qmake .pro文件:

    TEMPLATE = app
    CONFIG += console
    CONFIG -= app_bundle
    CONFIG -= qt
    
    HEADERS += \
        objloader.h \
        display.h \
        eventloop.h \
        shader.h \
        texture.h
    
    SOURCES += main.cpp \
        objloader.cpp \
        display.cpp \
        eventloop.cpp \
        shader.cpp \
        texture.cpp
    
    
    INCLUDEPATH +=  "C:/code middleware/glew-gcc-1.10.0-win32/include/" \
                    "C:/code middleware/glm/" \
                    "C:/code middleware/SDL2-2.0.3/include/" \
                    "C:/Users/smart_000/Desktop/assimp/include/"
    
    DEPENDPATH +=   "C:/code middleware/SDL2-2.0.3/lib/x86/" \
                    "C:/Users/smart_000/Desktop/assimp/bin/" \
                    "C:/code middleware/glew-gcc-1.10.0-win32/lib/" \
                    "C:/code middleware/glew-gcc-1.10.0-win32/bin/"
    
    LIBS += -L"C:/code middleware/SDL2-2.0.3/lib/x86" -lSDL2main -lSDL2
    LIBS += -L"C:/Users/smart_000/Desktop/assimp/lib/" -lassimp.dll -lzlib
    LIBS += -L"C:/code middleware/glew-gcc-1.10.0-win32/lib/" -lglew32.dll
    LIBS += -lopengl32
    LIBS += -lglu32
    

    注意:不要忘记libs末尾的.dll(-lglew32.dll) .

    - 快乐链接!

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