windows下使用CMake，设置步骤

1.安装mingw-64

下载：https://sourceforge.net/projects/mingw-w64/files/latest/download
推荐默认路径安装（勾选 添加到环境变量，重启生效）

2.安装CMake

下载：https://cmake.org/files/
推荐默认路径安装（勾选 添加到环境变量，重启生效）

3.修改cmake在mingw下的工具

在路径下C:\Program Files\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin找到mingw32-make.exe文件复制一份重命名为make.exe

若出现此错误：注意第三步。。。make : 无法将“make”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写，如果包括路 径，请确保路径正确，然后再试一次。

4. 在cmd中使用cmake

1. 每次cmake之前删除缓存
2. cd build
3. cmake -G "Unix Makefiles" ../ (非常重要)

常见错误提示

1. – Building for: NMake Makefiles
   – The C compiler identification is GNU 8.1.0
   – The CXX compiler identification is GNU 8.1.0
   – Check for working C compiler: C:/Program Files/mingw-w64/x86_64-8.1.0-posix-seh-rt_v6-rev0/mingw64/bin/gcc.exe
   CMake Error: Generator: execution of make failed. Make command was: nmake /nologo cmTC_356da\fast &&
   – Check for working C compiler: C:/Program Files/mingw-w64/x86_64-8.1.0-posix-seh-rt_v6-rev0/mingw64/bin/gcc.exe – broken
   CMake Error at C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeTestCCompiler.cmake:60 (message):
   The C compiler
   “C:/Program Files/mingw-w64/x86_64-8.1.0-posix-seh-rt_v6-rev0/mingw64/bin/gcc.exe”
   is not able to compile a simple test program.
   It fails with the following output:
   Change Dir: C:/cpp/XXX/build/CMakeFiles/CMakeTmp
   Run Build Command(s):nmake /nologo cmTC_356da\fast && 系统找不到指定的文件。
   Generator: execution of make failed. Make command was: nmake /nologo cmTC_356da\fast &&
   CMake will not be able to correctly generate this project.
   Call Stack (most recent call first):
   CMakeLists.txt:10 (project)
   – Configuring incomplete, errors occurred!
   See also “C:/cpp/XXX/build/CMakeFiles/CMakeOutput.log”.
   See also “C:/cpp/XXX/build/CMakeFiles/CMakeError.log”.

解决办法：看第四步 4. 在cmd中使用cmake