2.7 ica front git settings set 卸載 row bsp

1、下載和安裝HomeBrew

打開terminal，輸入下面的命令：

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

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/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

可能在下載的過程中遇到如下問題，不要慌，可能是網絡問題導致的，重新執行一遍安裝命令即可

然後就是一路enter即可，最後看到successful就搞定了 這裏解釋下為何要安裝HomeBrew，我們都知道macOS是基於unix的，但是這套從unix衍生出來的計算機系統很多unix底層的工具都是缺失的，所以這就有了homebrew，官方解釋可以以最簡單，最靈活的方式來安裝macOS中不包含的UNIX工具，安裝和卸載的方式也很簡單，只需要在terminal中輸入下面的兩條代碼即可：

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"

//常用命令：
//安裝軟件，如：brew install oclint
//卸載軟件，如：brew uninstall oclint
//搜索軟件，如：brew search oclint
//更新軟件，如：brew upgrade oclint
//查看安裝列表， 如：brew list
//更新Homebrew，如：brew update
 

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/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

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/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"

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//常用命令：

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//安裝軟件，如：brew install oclint

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//卸載軟件，如：brew uninstall oclint
 

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//搜索軟件，如：brew search oclint

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//更新軟件，如：brew upgrade oclint

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//查看安裝列表， 如：brew list

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//更新Homebrew，如：brew update

2、安裝GLEW和GLFW

很過教程都是基於GLUT的，但Xcode上會顯示deprecate的warning，主要因為GLUT從1998年不再更新了，使用也有一定隱患。現在使用的一般為GLEW，GLFW，FreeGLUT(兼容GLUT)，在terminal中輸入

brew install glew
brew install glfw
brew install freeglut

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brew install glew

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brew install glfw

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brew install freeglut

筆者在安裝最後一個的時候遇到了一個小問題

freeglut: XQuartz 2.7.11 (or newer) is required to install this formula. X11Requirement unsatisfied!
You can install with Homebrew-Cask:
 brew cask install xquartz
You can download from:
 https://xquartz.macosforge.org
Error: An unsatisfied requirement failed this build.

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freeglut: XQuartz 2.7.11 (or newer) is required to install this formula. X11Requirement unsatisfied!

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You can install with Homebrew-Cask:

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 brew cask install xquartz

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You can download from:

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 https://xquartz.macosforge.org

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Error: An unsatisfied requirement failed this build.

提示需要安裝XQuartz，這個很簡單，直接去XQuartz的官網下載安裝一下就好了，安裝完XQuartz後繼續執行最後freeglut安裝完畢 3、Xcode配置 新建一個command line tool工程 在Build Setting中設置好Header Search Paths和Library Search Paths如下： 然後在Build Phases裏面添加庫文件 4、編寫代碼測試 從glfw的官網找了一個基本的代碼框架，然後添加了一段渲染三角形的代碼，主要功能就是創建一個glwindow，然後在裏面繪制一個三角形，代碼如下：

#include <stdio.h>
#include <GL/glew.h>
#include <GLFW/glfw3.h>

int main(int argc, const char * argv[]) {
    GLFWwindow *window;
    /* Initialize the library */
    if (!glfwInit())
        return -1;
    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "Hello OpenGL", NULL, NULL);
    if (!window) {
        glfwTerminate();
        return -1;
    }
    /* Make the window‘s context current */
    glfwMakeContextCurrent(window);
    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window)) {
        /* Render here */
        glBegin(GL_TRIANGLES);
        
        glColor3f(1.0, 0.0, 0.0);    // Red
        glVertex3f(0.0, 1.0, 0.0);
        
        glColor3f(0.0, 1.0, 0.0);    // Green
        glVertex3f(-1.0, -1.0, 0.0);
        
        glColor3f(0.0, 0.0, 1.0);    // Blue
        glVertex3f(1.0, -1.0, 0.0);
        
        glEnd();
        /* Swap front and back buffers */
        glfwSwapBuffers(window);
        /* Poll for and process events */
        glfwPollEvents();
    }
    glfwTerminate();
  
    return 0;
}

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#include <stdio.h>

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#include <GL/glew.h>

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#include <GLFW/glfw3.h>

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int main(int argc, const char * argv[]) {

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    GLFWwindow *window;

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    /* Initialize the library */

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    if (!glfwInit())

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        return -1;

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    /* Create a windowed mode window and its OpenGL context */

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    window = glfwCreateWindow(640, 480, "Hello OpenGL", NULL, NULL);

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    if (!window) {

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        glfwTerminate();

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        return -1;

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    }

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    /* Make the window‘s context current */

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    glfwMakeContextCurrent(window);

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    /* Loop until the user closes the window */

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    while (!glfwWindowShouldClose(window)) {

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        /* Render here */

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        glBegin(GL_TRIANGLES);

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        glColor3f(1.0, 0.0, 0.0);    // Red

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        glVertex3f(0.0, 1.0, 0.0);

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        glColor3f(0.0, 1.0, 0.0);    // Green

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        glVertex3f(-1.0, -1.0, 0.0);

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        glColor3f(0.0, 0.0, 1.0);    // Blue

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        glVertex3f(1.0, -1.0, 0.0);

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        glEnd();

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        /* Swap front and back buffers */

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        glfwSwapBuffers(window);

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        /* Poll for and process events */

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        glfwPollEvents();

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    }

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    glfwTerminate();

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    return 0;

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}

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然後build，然後就傻眼了有20個編譯錯誤，仔細看error貌似是庫的鏈接問題，提示找不到定義 /usr/local/Cellar/glew/2.1.0/include/GL/glew.h:19860:17: Missing ‘#include "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl3.h"‘; declaration of ‘PFNGLCOPYTEXSUBIMAGE3DPROC‘ must be imported from module ‘OpenGL.GL3‘ before it is required 然後就百度找相關的資料，果然找到了類似的問題，解決辦法就是需要將Build Settings裏的Enable Modules(C and Objective-C)設為No即可，具體原因不詳，筆者猜測可能與OpenGL對C的支持有關系，嘗試設置後，果然可以編譯通過了 至此，在Xcode下的OpenGL開發環境就配置好了，接下來就可以愉快的學習OpenGL了

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來自為知筆記(Wiz)

OpenGL學習之旅01—Xcode+OpenGL環境配置