keywords: OpenGL, GLSL Cookbook

去年写过一篇文章：[OpenGL]GLSL Cookbook源码编译步骤流程
该文章与github上的最新代码已不再有效（主要是glm和glfw相关的CMake配置发生变动）：

当前这篇文章针对github的glslcookbook最新代码，重新梳理一次配置流程，保证最新代码能编译工程并跑起来。步骤如下：

1，下载glm源码，并用cmake-gui生成VS工程文件：
https://github.com/g-truc/glm/releases/download/0.9.9.0/glm-0.9.9.0.zip

假设
cmake-gui的source code设置为：
D:/sdk/glm-0.9.9.0
cmake-gui的build binaries设置为：
D:/sdk/glm-0.9.9.0/bin

Configure过程中，会有警告，可以无视，直接Generate：

GLM is a header only library, no need to build it. Set the option GLM_TEST_ENABLE with ON to build and run the test bench

生成完以后，不需要打开VS编译，后面直接使用相关文件即可。

2，下载glfw源码，并用cmake-gui生成VS工程文件。 https://github.com/glfw/glfw/releases/download/3.2.1/glfw-3.2.1.zip

假设
cmake-gui的source code设置为：
D:/sdk/glfw-3.2.1
cmake-gui的build binaries设置为：
D:/sdk/glfw-3.2.1/bin

Configure过程中，会有红色警告，可以无视，直接Generate：

CMake Deprecation Warning at CMakeLists.txt:10 (cmake_policy): The OLD behavior for policy 
CMP0042 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated 
and that a policy should be set to OLD only under specific short-term circumstances. 
Projects should be ported to the NEW behavior and not rely on setting a policy to OLD.

生成完以后，打开bin/GLFW.sln，并编译整个工程。编译完成后，做以下步骤：

  • 将文件D:\sdk\glfw-3.2.1\bin\src\Debug\glfw3.lib拷贝到D:\sdk\glfw-3.2.1\bin\CMakeFiles\Export\lib
  • 将目录D:\sdk\glfw-3.2.1\include拷贝到D:\sdk\glfw-3.2.1\bin\CMakeFiles\Export\
  • 将文件D:\sdk\glfw-3.2.1\bin\src\下的glfw3Config.cmake和glfw3ConfigVersion.cmake拷贝到D:\sdk\glfw-3.2.1\bin\CMakeFiles\Export\lib\cmake\glfw3

如果不执行这些步骤，后续cmake时会报以下错误：

Could not find a package configuration file provided by "glfw3" (requested version 3.2)
with any of the following names:

  glfw3Config.cmake
  glfw3-config.cmake

Add the installation prefix of "glfw3" to CMAKE_PREFIX_PATH or set "glfw3_DIR" to a directory 
containing one of the above files.  If "glfw3" provides a separate development package or SDK, 
be sure it has been installed.

若想自动拷贝上述文件，需要改用cmake命令行生成，例如：

mkdir build
cd build
cmake ..
cmake --build . --target install --config Release

3，克隆glslcookbook代码：
https://github.com/daw42/glslcookbook

然后打开CMakeLists.txt，在find_package之前追加两行（注意：斜杠方向向右）：

set(glm_DIR D:/sdk/glm-0.9.9.0/bin)
set(glfw3_DIR D:/sdk/glfw-3.2.1/bin/CMakeFiles/Export/lib/cmake/glfw3)

然后用cmake-gui生成VS工程文件，然后打开VS编译工程，并运行相关demo即可。例如：

D:\glslcookbook\bin\chapter02>start Debug/chapter02.exe ads

人就是要以自卑为跳板，才能跳得更高。---坂田银时《银魂》