OpenGL与GLFW和GLEW-在windows下使用gcc编译

OpenGL with GLFW and GLEW - compiling with gcc on windows

本文关键字:gcc 编译 windows GLFW GLEW- OpenGL      更新时间:2023-10-16

我正在尝试运行一个OpenGL程序,该程序使用我自己构建的GLFW和GLEW库。我使用的启动器代码是

#include <iostream>
// GLEW
#define GLEW_STATIC
#include <glew.h>
// GLFW
#include <glfw3.h>

// Function prototypes
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
// Window dimensions
const GLuint WIDTH = 800, HEIGHT = 600;
// The MAIN function, from here we start the application and run the game loop
int main()
{
    std::cout << "Starting GLFW context, OpenGL 3.3" << std::endl;
    // Init GLFW
    glfwInit();
    // Set all the required options for GLFW
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
    // Create a GLFWwindow object that we can use for GLFW's functions
    GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", 0, 0);
    glfwMakeContextCurrent(window);
    if (window == NULL)
    {
        std::cout << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }
    // Set the required callback functions
    glfwSetKeyCallback(window, key_callback);
    // Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
    glewExperimental = GL_TRUE;
    // Initialize GLEW to setup the OpenGL Function pointers
    if (glewInit() != GLEW_OK)
    {
        std::cout << "Failed to initialize GLEW" << std::endl;
        return -1;
    }    
    // Define the viewport dimensions
    glViewport(0, 0, WIDTH, HEIGHT);
    // Game loop
    while (!glfwWindowShouldClose(window))
    {
        // Check if any events have been activated (key pressed, mouse moved etc.) and call corresponding response functions
        glfwPollEvents();
        // Render
        // Clear the colorbuffer
        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        // Swap the screen buffers
        glfwSwapBuffers(window);
    }
    // Terminate GLFW, clearing any resources allocated by GLFW.
    glfwTerminate();
    return 0;
}
// Is called whenever a key is pressed/released via GLFW
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)
{
    std::cout << key << std::endl;
    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
        glfwSetWindowShouldClose(window, GL_TRUE);
}

然后我键入

g++ -I<path to headers> Tma.cpp -L<path to libraries> -lglu32 -lopengl32 -lglfw3 -lglew32

这会产生许多"未定义的引用"错误。

代码应该是可以的,就像我以前在VisualStudio中成功运行它一样。

此命令:

g++ -I<path to headers> Tma.cpp -L<path to libraries> -lglu32 -lopengl32 -lglfw3 -lglew32

在Windows中是不够的。您将需要链接其他系统库。例如,Visual Studio 2012中的每个项目默认都附加了以下内容:

kernel32.lib
user32.lib
gdi32.lib
winspool.lib
comdlg32.lib
advapi32.lib
shell32.lib
ole32.lib
oleaut32.lib
uuid.lib
odbc32.lib
odbccp32.lib

这就是为什么它在VS中编译得很好。

CCD_ 2和CCD_。执行任何图形操作时,都需要gdi32.lib

第一个解决方案:

手动链接这些库:

g++ -I<path to headers> Tma.cpp -L<path to libraries> -lglu32 -lopengl32 -lglfw3 -lglew32 -lkernel32 -luser32 -lgdi32 -lws2_32

如果我没有记错的话,ws2_32.a是MinGW提供的WinSock2库的名称。

第二个解决方案:

如果使用MinGW,则可以使用-mwindows标志:

g++ -I<path to headers> Tma.cpp -L<path to libraries> -lglu32 -lopengl32 -lglfw3 -lglew32 -mwindows

这将链接gdi32.akernel32.auser32.aws2_32.a等。