Mac 上的 GLFW 环境配置

背景：GLFW

一、下载和编译

从官网下载源代码包：http://www.glfw.org/download.html
（我下载的是 github 仓库上的）
按官方指南编译。总结如下：

cd glfw-master
cmake . 
# 默认是编译静态库，如果要编译动态库则 cmake -DBUILD_SHARED_LIBS=ON .
make
make install

最后会看到

Install the project...
-- Install configuration: ""
-- Installing: /usr/local/include/GLFW
-- Installing: /usr/local/include/GLFW/glfw3.h
-- Installing: /usr/local/include/GLFW/glfw3native.h
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Config.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3ConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Targets.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Targets-noconfig.cmake
-- Installing: /usr/local/lib/pkgconfig/glfw3.pc
-- Installing: /usr/local/lib/libglfw3.a

二、配置 XCode 项目

注：配置名字可以通过cmd+f搜索来定位

配置项目的Build Settings：
- Other Linker Flags 为 -lgfw3
- Library Search Paths 的 Debug 和 Release 分别加上/usr/local/lib/
- Header Search Paths 加上 /usr/local/include/
添加库，打开项目的Build Phases

在 Link Binary With Libraries 中添加：
- Cocoa
- OpenGL
- IOKit
- CoreVideo

三、编译代码

新建main.cpp：

#include <GLFW/glfw3.h>

int main(int argc, const char * argv[]) {
    GLFWwindow* win;
    if(!glfwInit()){
        return -1;
    }
    win = glfwCreateWindow(640, 480, "OpenGL Base Project", NULL, NULL);
    if(!win)
    {
        glfwTerminate();
        return -1;
    }
    glfwMakeContextCurrent(win);
    while(!glfwWindowShouldClose(win)){
        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        glBegin(GL_TRIANGLES);
        {
            glColor3f(1.0,0.0,0.0);
            glVertex2f(0, .5);
            glColor3f(0.0,1.0,0.0);
            glVertex2f(-.5,-.5);
            glColor3f(0.0, 0.0, 1.0);
            glVertex2f(.5, -.5);
        }
        glEnd();
        glfwSwapBuffers(win);
        glfwPollEvents();
    }
    glfwTerminate();
    return 0;
}

点击运行按钮。效果如下：