CMake与多个gtest冲突 [英] CMake conflict with multiple gtest
问题描述
这是我在StackOverflow上的第一篇文章,如果我的问题有误,我们深表歉意。
This is my first post on StackOverflow, so apologies if there's something wrong with my question.
我是CMake的新人,我遇到了试图在库中使用现有gtest目录的C ++项目中导入gtest(Google测试)时出现问题。
I'm new at CMake, and I'm running into a problem trying to import gtest (Google Test) in a C++ project with an existing gtest directory used within a library.
我的根 CMakeLists.txt
文件是这个文件(我的更改是在开始更改和结束更改之间进行的):
My root CMakeLists.txt
file is this (My changes are made between "Begin changes" and "End changes") :
cmake_minimum_required(VERSION 2.6)
project(nifi-minifi-cpp)
set(PROJECT_NAME "nifi-minifi-cpp")
set(PROJECT_VERSION_MAJOR 0)
set(PROJECT_VERSION_MINOR 2)
set(PROJECT_VERSION_PATCH 0)
#### Establish Project Configuration ####
# Enable usage of the VERSION specifier
# https://cmake.org/cmake/help/v3.0/policy/CMP0048.html#policy:CMP0048
IF(POLICY CMP0048)
CMAKE_POLICY(SET CMP0048 OLD)
ENDIF(POLICY CMP0048)
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
if(COMPILER_SUPPORTS_CXX11)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
elseif(COMPILER_SUPPORTS_CXX0X)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
else()
message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
endif()
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
# Search for threads
find_package(Threads REQUIRED)
# Provide custom modules for the project
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
add_subdirectory(thirdparty/yaml-cpp-yaml-cpp-0.5.3)
add_subdirectory(libminifi)
add_subdirectory(main)
# Generate source assembly
set(ASSEMBLY_BASE_NAME "${CMAKE_PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
set(CPACK_SOURCE_GENERATOR "TGZ")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "${ASSEMBLY_BASE_NAME}-source")
set(CPACK_SOURCE_IGNORE_FILES "/build/;~$;${CPACK_SOURCE_IGNORE_FILES};${CMAKE_SOURCE_DIR}/.git/;${CMAKE_SOURCE_DIR}/.idea/;${CMAKE_SOURCE_DIR}/cmake-build-debug/")
# Generate binary assembly
install(FILES conf/minifi.properties conf/config.yml
DESTINATION conf
COMPONENT bin)
install(PROGRAMS bin/minifi.sh
DESTINATION bin
COMPONENT bin)
install(FILES LICENSE README.md NOTICE
DESTINATION .
COMPONENT bin)
set(CPACK_GENERATOR "TGZ")
set(CPACK_COMPONENT_INCLUDE_TOPLEVEL_DIRECTORY 1)
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Apache NiFi MiNiFi C++ version ${VERSION}")
set(CPACK_PACKAGE_VENDOR "Apache NiFi")
set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/README.md")
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
set(CPACK_PACKAGE_FILE_NAME "${ASSEMBLY_BASE_NAME}")
set(CPACK_BINARY_TGZ, "ON")
set(CPACK_ARCHIVE_COMPONENT_INSTALL ON)
set(CPACK_COMPONENTS_ALL bin)
include(CPack)
#### Begin changes
# Set up testing
enable_testing()
set(GTEST_ROOT "thirdparty/googletest/googletest")
add_subdirectory(thirdparty/googletest)
#
find_package(GTest REQUIRED)
include_directories(${GTEST_INCLUDE_DIRS})
add_executable(tailFileTest
test/TailFileTest.cpp
)
target_link_libraries(tailFileTest ${GTEST_LIBRARY_DEBUG} ${GTEST_MAIN_LIBRARY_DEBUG})
add_test(
NAME tailFileTest
COMMAND tailFileTest
)
#add_dependencies(${PROJECT_TEST_NAME} googletest)
#set(PROJECT_TEST_NAME ${PROJECT_NAME}_test)
#file(GLOB TEST_SRC_FILES ${PROJECT_SOURCE_DIR}/test/*.cpp)
#
#add_executable(${PROJECT_TEST_NAME} ${TEST_SRC_FILES})
#add_dependencies(${PROJECT_TEST_NAME} googletest)
#### End changes
并在运行 cmake ..
时从CMake输出(更相关的错误消息-可能)是:
And output from CMake when running cmake ..
(the more relevant error message - probably) is:
CMake Error at thirdparty/googletest/googletest/cmake/internal_utils.cmake:151 (add_library):
add_library cannot create target "gtest" because another target with the
same name already exists. The existing target is a static library created
in source directory
"/home/dev/nifi-minifi-cpp/thirdparty/yaml-cpp-yaml-cpp-0.5.3/test/gmock-1.7.0/gtest".
See documentation for policy CMP0002 for more details.
当前,我在以下位置找到了googletest的副本:
Currently, I've got a copy of googletest in:
/home/g/dev/nifi-minifi-cpp/thirdparty/googletest
现有的googletest目录位于以下位置:
And the existing googletest directory is within:
/home/g/dev/nifi-minifi-cpp/thirdparty/yaml-cpp-yaml-cpp-0.5.3/test/gmock-1.7.0
下面是目录结构的简要图片:
Here's a quick picture of the directory structure:
.
├── CMakeLists.txt
├── test [<- My directory to store and run tests]
└── thirdparty
├── googletest [<- My googletest directory]
└── yaml-cpp-yaml-cpp-0.5.3
├── test
│ ├── CMakeLists.txt
│ ├── gmock-1.7.0 [<- The existing googletest directory]
278 directories, 2096 files
总体目标是要有一个 test
目录来运行测试。
The overall goal is to have a test
directory for running tests.
任何建议或线索对于我正在做错的事情或应该做的事情,将不胜感激。希望以上内容可以解释我所面临的挑战,如果有文件或错误消息,人们会认为我丢失了,可以帮助我将其粘贴到此处。
Any suggestions or clues to what I'm doing wrong, or what I should be doing, would be greatly appreciated. Hopefully the above explains the challenge I'm facing, and if there's a file or error message people think I'm missing that would help I can paste it in here.
推荐答案
这仅仅是翻倍,其中包括3d缔约方项目( gtest
情况)使用 add_subdirectory
。第一个包含点是
This is just double including 3d-party project (gtest
in your case) using add_subdirectory
. The first include point is
add_subdirectory(gmock-1.7.0)
在yaml-cpp 子项目中,第二个包含点是
inside yaml-cpp subproject and the second include point is
add_subdirectory(thirdparty/googletest)
在您的 CMakeLists.txt
。
这种双精度包含在CMake中不起作用,因此您需要消除之一add_subdirectory
调用。
Such double including doesn't work in CMake, so you need to eliminate one of add_subdirectory
call.
-
在您的代码中,您可以替换
add_subdirectory
方法是ExternalProject_Add
和execute_process
的组合。这种方法将在配置阶段构建googletest(因此,find_package(GTest)
将起作用),但不会污染来自googletest目标的项目名称空间。
In your code, you may replace
add_subdirectory
approach by combination ofExternalProject_Add
andexecute_process
. That approach will build googletest on configuration stage (so,find_package(GTest)
will work), but doesn't pollute namespace of your project with targets from googletest.
在其他项目中( yaml-cpp
),您可以通过禁用来消除包括googletest测试。只需禁用适当的选项
In other project (yaml-cpp
), you may eliminate including googletest by disable testing. Just disable appropriate option
option(YAML_CPP_BUILD_TOOLS "Enable testing and parse tools" OFF)
之前
add_subdirectory(thirdparty/yaml-cpp-yaml-cpp-0.5.3)
(用于禁用中的选项CMakeLists.txt
,您需要干净重新配置整个项目,即使用空的CMake缓存。)
(For disabling option from CMakeLists.txt
you need to reconfigure the whole project cleanly, that is with empty CMake cache).
注意,则此选项还会禁用yaml-cpp项目的 util /
子目录下的某些实用程序。
Note, that this option also disables some utilities under util/
subdirectory of yaml-cpp project.
在第一种方法中,您可以将 yaml-cpp
子项目的包含更改为 ExternalProject_Add
+ execute_process
。这样,它的所有目标和子项目的目标都不会污染项目的名称空间。
Similarly to the first approach, you may change inclusion of yaml-cpp
subproject to ExternalProject_Add
+ execute_process
. Such a way all its targets and targets of its subprojects will not pollute namespace of your project.
这篇关于CMake与多个gtest冲突的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!