CMake Error: CMake was unable to find a build program corresponding to “Ninja”.

使用cmake -G ninja ..后出现问题，报错信息如下所示:

CMake Error: CMake was unable to find a build program corresponding to "Ninja". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER

原因：

没有安装Ninja

解决方式

sudo apt-get update -y

sudo apt-get install -y ninja-build

结果

build.ninja和rules.ninja：包含Ninja的所有的构建语句和构建规则。