C++ 为什么我的项目失败了并且没有'；当移动我用CMake制作的单元测试项目时，我不会编译

所以我学习了一个教程，效果很好。但是，当我将项目文件夹移动到另一个目录时，项目中断并出现以下错误：

FAILED: test/ExampleTests.exe
.
.
.
[build] LINK : warning LNK4098: defaultlib 'LIBCMTD' conflicts with use of other libs; use 
/NODEFAULTLIB:library
[build] test\ExampleTests.exe : fatal error LNK1169: one or more multiply defined symbols found
[build] ninja: build stopped: subcommand failed.
[build] Build finished with exit code 1

还有更多，但我不想用中间的东西轰炸你

我将文件夹从

Desktop\Example

移动到

Desktop\HelloWorld\Example

。我尝试删除它创建的生成文件夹，并再次点击F7，但它一直给我错误

文件夹结构

build\
googletest\
test\
    |CMakeLists.txt
    | ExampleTests.cpp
CMakeLists.txt
Example.cpp
Example.hpp

CMakeLists.txt：

cmake_minimum_required(VERSION 3.12) 
set(This Example) 
project(${This} C CXX) 
set(CMAKE_C_STANDARD 99) 
set(CMAKE_CXX_STANDARD 11) 
set(CMAKE_POSITION_INDEPENDENT_CODE ON) 
enable_testing() 
add_subdirectory(googletest) 
set(Headers Example.hpp 
) 
set(Sources Example.cpp 
) 
add_library(${This} STATIC ${Sources} ${Headers}) 
add_subdirectory(test)

cmake_minimum_required(VERSION 3.12)
set(This ExampleTests)
set(Sources
    ExampleTests.cpp
)
add_executable(${This} ${Sources})
target_link_libraries(${This} PUBLIC
    gtest_main
    Example
)
add_test(
    NAME ${This}
    COMMAND ${This}
)

#include <gtest/gtest.h>
TEST(ExampleTest, blah)
{
    ASSERT_EQ(true, true);
}

#include "Example.hpp"
void Example::test()
{
    int x = 5;
}

#ifndef EXAMPLE_HPP
#define EXAMPLE_HPP
class Example
{
    public:
        void test();
};
#endif

测试\CMakeLists.txt：

cmake_minimum_required(VERSION 3.12) 
set(This Example) 
project(${This} C CXX) 
set(CMAKE_C_STANDARD 99) 
set(CMAKE_CXX_STANDARD 11) 
set(CMAKE_POSITION_INDEPENDENT_CODE ON) 
enable_testing() 
add_subdirectory(googletest) 
set(Headers Example.hpp 
) 
set(Sources Example.cpp 
) 
add_library(${This} STATIC ${Sources} ${Headers}) 
add_subdirectory(test)

cmake_minimum_required(VERSION 3.12)
set(This ExampleTests)
set(Sources
    ExampleTests.cpp
)
add_executable(${This} ${Sources})
target_link_libraries(${This} PUBLIC
    gtest_main
    Example
)
add_test(
    NAME ${This}
    COMMAND ${This}
)

#include <gtest/gtest.h>
TEST(ExampleTest, blah)
{
    ASSERT_EQ(true, true);
}

#include "Example.hpp"
void Example::test()
{
    int x = 5;
}

#ifndef EXAMPLE_HPP
#define EXAMPLE_HPP
class Example
{
    public:
        void test();
};
#endif

示例测试.cpp：

cmake_minimum_required(VERSION 3.12) 
set(This Example) 
project(${This} C CXX) 
set(CMAKE_C_STANDARD 99) 
set(CMAKE_CXX_STANDARD 11) 
set(CMAKE_POSITION_INDEPENDENT_CODE ON) 
enable_testing() 
add_subdirectory(googletest) 
set(Headers Example.hpp 
) 
set(Sources Example.cpp 
) 
add_library(${This} STATIC ${Sources} ${Headers}) 
add_subdirectory(test)

cmake_minimum_required(VERSION 3.12)
set(This ExampleTests)
set(Sources
    ExampleTests.cpp
)
add_executable(${This} ${Sources})
target_link_libraries(${This} PUBLIC
    gtest_main
    Example
)
add_test(
    NAME ${This}
    COMMAND ${This}
)

#include <gtest/gtest.h>
TEST(ExampleTest, blah)
{
    ASSERT_EQ(true, true);
}

#include "Example.hpp"
void Example::test()
{
    int x = 5;
}

#ifndef EXAMPLE_HPP
#define EXAMPLE_HPP
class Example
{
    public:
        void test();
};
#endif

示例.hpp：

cmake_minimum_required(VERSION 3.12) 
set(This Example) 
project(${This} C CXX) 
set(CMAKE_C_STANDARD 99) 
set(CMAKE_CXX_STANDARD 11) 
set(CMAKE_POSITION_INDEPENDENT_CODE ON) 
enable_testing() 
add_subdirectory(googletest) 
set(Headers Example.hpp 
) 
set(Sources Example.cpp 
) 
add_library(${This} STATIC ${Sources} ${Headers}) 
add_subdirectory(test)

cmake_minimum_required(VERSION 3.12)
set(This ExampleTests)
set(Sources
    ExampleTests.cpp
)
add_executable(${This} ${Sources})
target_link_libraries(${This} PUBLIC
    gtest_main
    Example
)
add_test(
    NAME ${This}
    COMMAND ${This}
)

#include <gtest/gtest.h>
TEST(ExampleTest, blah)
{
    ASSERT_EQ(true, true);
}

#include "Example.hpp"
void Example::test()
{
    int x = 5;
}

#ifndef EXAMPLE_HPP
#define EXAMPLE_HPP
class Example
{
    public:
        void test();
};
#endif

---

所以我向我链接的视频的原始上传者寻求解决方案，这就解决了我的问题

将它移动到另一个文件夹通常会破坏一些东西，除非您清除生成文件夹（只需删除它或不将其与其余文件一起移动）。build文件夹包含包含路径名的中间生成产品，以及同样包含路径名的CMake缓存（CMakeCache.txt）

---

当我移动到另一个目录时，我只移动所有的文件，除了他所说的构建文件夹，打开VS代码并编译。

你能同时粘贴你的Example.cpp和Example.hpp吗？@theWiseBro更新了。从内存中写的，我现在不在我的开发计算机上。它应该是#define EXAMPLE_HPP。也许是打字错误？这肯定会导致这个多定义错误。@theWiseBro很抱歉，这是从内存中键入的一个输入错误。听起来你的配置不知何故被破坏了。是否确实正在生成在新生成目录位置生成的项目<代码>桌面\HelloWorld\Example\build