Question

我正在尝试设置GoogleTest以在Legacy-Code基础上添加一些测试。

因此，我下载了GoogleTest的最新版本并将其并排提取到遗留代码中，并添加了一个简单的测试来验证安装/配置是否正确。

每当我尝试使用CMake制作项目时，我最终会出现以下错误：

Scanning dependencies of target RunUnitTests
[ 92%] Building CXX object Testing_Code/CMakeFiles/RunUnitTests.dir/test_main.cpp.o
Linking CXX executable RunUnitTests
CMakeFiles/RunUnitTests.dir/test_main.cpp.o: In function `main':
test_main.cpp:(.text+0x1b): undefined reference to `testing::InitGoogleTest(int*, char**)'
CMakeFiles/RunUnitTests.dir/test_main.cpp.o: In function `RUN_ALL_TESTS()':
test_main.cpp:(.text._Z13RUN_ALL_TESTSv[_Z13RUN_ALL_TESTSv]+0x7): undefined reference to `testing::UnitTest::GetInstance()'
test_main.cpp:(.text._Z13RUN_ALL_TESTSv[_Z13RUN_ALL_TESTSv]+0x10): undefined reference to `testing::UnitTest::Run()'
collect2: error: ld returned 1 exit status
Testing_Code/CMakeFiles/RunUnitTests.dir/build.make:85: recipe for target 'Testing_Code/RunUnitTests' failed
make[2]: *** [Testing_Code/RunUnitTests] Error 1
CMakeFiles/Makefile2:429: recipe for target 'Testing_Code/CMakeFiles/RunUnitTests.dir/all' failed
make[1]: *** [Testing_Code/CMakeFiles/RunUnitTests.dir/all] Error 2
Makefile:116: recipe for target 'all' failed
make: *** [all] Error 2

（完整输出可见here）

我一直在寻找解决方案很长一段时间。我在google上搜索了很多链接并且在互联网上阅读了我丢失了概述。我真的很新的CMake，并认为我想念一些小而重要的......

我的文件夹层次结构如下所示：

+
|-+CMake
| |-run.sh
| |-BuildAll.sh
| |-CMakeLists.txt
|
|-+cpp-project
| |-CMakeLists.txt
| |-+work
| | |-CMakeLists.txt
| | 
| |-+include
|   |-CMakeLists.txt
|
|-+GoogleTest
| |-CMakeLists.txt
| |-+googlemock
| |-+googletest
| |-RADME.md
| |-travis.sh
|
|-+Testing_Code
  |-CMakeLists.txt
  |-+test
    |-CMakeLists.txt
    |-test.

要开始编译，我运行sh ~/code/CMake/run.sh，如下所示：

cp BuildAll.sh ./../BuildAll.sh
cp CMakeLists.txt ./../CMakeLists.txt
cd ..
sh BuildAll.sh $1

BuildAll会做一些清理工作并生成一些文件夹等：

#!/bin/bash

alwaysCleanBuild=$1
control="control"
unittest_out="$control/test"
build="build"
include="$build/include"

if [ $alwaysCleanBuild = true ]; then
    if [ -d "$control" ]; then
        rm -r "$control"
    fi

    if [ -d "$build" ]; then
        rm -r "$build"
    fi
fi

mkdir $control
mkdir $build
mkdir $include

cd $build

cp -r ../GoogleTest/googletest/include/* ./include/
cp ../cpp-project/include/* ./include

cmake ..

if [ $? = 0 ]; then
    make

    if [ $? = 0 ]; then
            ./../control/RunUnitTests
    fi
fi

新文件夹简称：

control是cpp-project libs / binarys /你想要调用输出的输出目录;）
build是用于生成Makefile等的CMake目的地
build\include是访问gtest和cpp-projects标题的测试的公共include-dir。

将CMake / CMakeLists.txt从BuildAll.sh脚本复制到根目录。所以有一个＆＃39; root＆＃39; - CMakeLists.txt。此CMakeLists指定include_directories和输出目录（＆＃39; s）：

cmake_minimum_required(VERSION 3.2)

project(Test)

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../control)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../control)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../control)

include_directories(${CMAKE_BINARY_DIR}/include)

add_subdirectory(cpp-project)
add_subdirectory(GoogleTest)
add_subdirectory(Testing_Code)

GoogleTest的CMakeLists都没有受到影响，而且它们的运行就像一个魅力。 cpp-projects CMakeFile运行得非常好，它们将所有内容输出到control目录。（我对CMake非常满意。它比普通的Makefile（在我的观点中）更容易和更简单地用于“简单的初学者步骤”。

来自/Testing_Code/的CMakeLists看起来也很简单，但我想在那里你会发现我的错误：

cmake_minimum_required(VERSION 3.2)

project(Testing)

# Create main.cpp which uses gtest
file(WRITE test_main.cpp "#include <gtest/gtest.h>\n\n")
file(APPEND test_main.cpp "int main(int argc, char **argv)\n{\n")
file(APPEND test_main.cpp "    testing::InitGoogleTest(&argc, argv);\n")
file(APPEND test_main.cpp "    return RUN_ALL_TESTS();\n")
file(APPEND test_main.cpp "}\n")

# build all tests
ADD_SUBDIRECTORY(test)
# ADD_SUBDIRECTORY(test_2)
# ADD_SUBDIRECTORY(test_3)

# build the test_main
ADD_EXECUTABLE(RunUnitTests test_main.cpp ${GTEST_INCLUDE})

# Link RunUnitTests with GoogleTest and cpp-project
TARGET_LINK_LIBRARIES(RunUnitTests ${GoogleTest} ${cpp-project})

我无法在这里找到错误，我真的希望有人可以帮助我。

Answer 1

尝试添加测试代码的cmake文件

include_directories(
    /path/to/googletest/include/folder )

编辑：

试试这个：

1）删除行

cp -r ../GoogleTest/googletest/include/* ./include/
cp ../cpp-project/include/* ./include

2）从

编辑你的cmake文件

include_directories(${CMAKE_BINARY_DIR}/include)

到

    include_directories(
  ${CMAKE_BINARY_DIR}/../include
  ${CMAKE_BINARY_DIR}/../googletest/include/)
  add_subdirectory(
  ${CMAKE_BINARY_DIR}/googletest
  ${CMAKE_BINARY_DIR}/googletest/build
  EXCLUDE_FROM_ALL 
 )

此外，由于您的CMakeLists.txt文件位于cmake文件夹中，因此它应该是

add_subdirectory(../cpp-project)
add_subdirectory(../GoogleTest)
add_subdirectory(../Testing_Code)

而不是

add_subdirectory(cpp-project)
add_subdirectory(GoogleTest)
add_subdirectory(Testing_Code)

CMake链接GoogleTest和UnitTests

1 个答案: