如何正确设置CMakeLists.txt文件？

Question

我有一个简单的C++测试项目，并写下我的CMakeLists.txt文件如下;

cmake_minimum_required(VERSION 2.8) 

set(CMAKE_C_COMPILER "C:/MinGW/bin/gcc") 
set(CMAKE_CXX_COMPILER "C:/MinGW/bin/g++") 

project(simpleTest) 
add_executable(main main.cpp) 

当我尝试运行CMake的GUI的一套发生器MinGW的我收到以下错误信息：

The C compiler identification is GNU 4.6.1 
The CXX compiler identification is GNU 4.6.1 
Check for working C compiler: C:/MinGW/bin/gcc 
CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name. 
CMake Error: Internal CMake error, TryCompile configure of cmake failed 
Check for working C compiler: C:/MinGW/bin/gcc -- broken 
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:61 (message): 
    The C compiler "C:/MinGW/bin/gcc" is not able to compile a simple test 
    program. 

    It fails with the following output: 



    CMake will not be able to correctly generate this project. 
Call Stack (most recent call first): 
    CMakeLists.txt:7 (project) 


CMake Error: your C compiler: "C:/MinGW/bin/gcc" was not found. Please set CMAKE_C_COMPILER to a valid compiler path or name. 
CMake Error: your CXX compiler: "C:/MinGW/bin/g++" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name. 
Configuring incomplete, errors occurred! 

我在Windows 7 64位和我确认了CMD是什么; G ++ --version给出G ++（GCC）4.6.1。

我在做什么错？

Answer 1

很抱歉，这看起来像编译器没有安装在您指定的位置。另请参阅here为什么你应该避免设置编译器的CMakeLists.txt

所以我删除这些，清除缓存的CMake，CMake的调用之前设置环境变量CC和CXX，然后再试一次。

Answer 2

我认为你的问题在于路径字符串。试试这个：

set(CMAKE_C_COMPILER "C:\\MinGW\\bin\\gcc") 
set(CMAKE_CXX_COMPILER "C:\\MinGW\\bin\\g++") 

或者，你也可以在CMake GUI中设置你的编译器。点击生成后，选择“指定本地编译器”选项并设置或浏览到正确的位置。