的Bonjour，
我目前正在研究CMake，以便在工作中使用ExternalProject_add。因为我想测试googletest，我尝试测试两者。我在编译单元测试代码时遇到了一个问题。
所以我只关注github上的googletest项目的自述文件：https://github.com/google/googletest/blob/master/googletest/README.md#incorporating-into-an-existing-cmake-project。
这是我的项目树：
test_cpp/
├── build
├── CMakeLists.txt
├── CMakeLists.txt.in
├── inc
│ └── foo.h
├── src
│ └── foo.c
└── test
└── test_foo.c
我的test_foo.c只是在foo中测试一个圆形的函数：
#include "gtest/gtest.h"
#include "foo.h"
TEST(AddTest, roundValue)
{
ASSERT_EQ(roundValue(2.6),3);
}
int main(int argc, char **argv)
{
::testing::InitGoogleTest(&argc,argv);
return RUN_ALL_TESTS();
}
这是cmake命令的结果：
axis@axis-mad:~/Work/test_cpp/build$ cmake ..
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found Git: /usr/bin/git (found version "2.7.4")
-- Configuring done
-- Generating done
-- Build files have been written to: /home/axis/Work/test_cpp/build/googletest-download
Scanning dependencies of target googletest
[ 11%] Creating directories for 'googletest'
[ 22%] Performing download step (git clone) for 'googletest'
Clonage dans 'googletest-src'...
Déjà sur 'master'
Votre branche est à jour avec 'origin/master'.
[ 33%] No patch step for 'googletest'
[ 44%] Performing update step for 'googletest'
Déjà sur 'master'
Votre branche est à jour avec 'origin/master'.
[ 55%] No configure step for 'googletest'
[ 66%] No build step for 'googletest'
[ 77%] No install step for 'googletest'
[ 88%] No test step for 'googletest'
[100%] Completed 'googletest'
[100%] Built target googletest
MESSAGE CMAKE_BINARY_DIR: /home/axis/Work/test_cpp/build
-- Found PythonInterp: /usr/bin/python (found version "2.7.12")
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Test case source files/home/axis/Work/test_cpp/test/test_foo.c
-- Configuring done
-- Generating done
-- Build files have been written to: /home/axis/Work/test_cpp/build
CMake正确下载googletest。 makefile和依赖项似乎也正确但我在gtest / gtest.h的包含中有这个错误：
axis@axis-mad:~/Work/test_cpp/build$ make
Scanning dependencies of target foo
[ 25%] Building C object CMakeFiles/foo.dir/src/foo.c.o
Linking C shared library libfoo.so
[ 25%] Built target foo
Scanning dependencies of target gtest
[ 50%] Building CXX object googletest-build/googlemock/gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
Linking CXX static library libgtest.a
[ 50%] Built target gtest
Scanning dependencies of target gtest_main
[ 75%] Building CXX object googletest-build/googlemock/gtest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o
Linking CXX static library libgtest_main.a
[ 75%] Built target gtest_main
Scanning dependencies of target foo_test
[100%] Building C object CMakeFiles/foo_test.dir/test/test_foo.c.o
In file included from /home/axis/Work/test_cpp/test/test_foo.c:1:0:
/home/axis/Work/test_cpp/build/googletest-src/googletest/include/gtest/gtest.h:54:18: fatal error: limits: No such file or directory
compilation terminated.
CMakeFiles/foo_test.dir/build.make:54 : recipe for target « CMakeFiles/foo_test.dir/test/test_foo.c.o » failed
make[2]: *** [CMakeFiles/foo_test.dir/test/test_foo.c.o] Error 1
CMakeFiles/Makefile2:97 : recipe for target « CMakeFiles/foo_test.dir/all » failed
make[1]: *** [CMakeFiles/foo_test.dir/all] Erreur 2
Makefile:123 : recipe for target « all » failed
make: *** [all] Error 2
这是我的CMakeLists.txt文件：
cmake_minimum_required(VERSION 2.8.9)
project (foo)
## Dependencies
include(ExternalProject)
# Use CMake to download GoogleTest as part of the build's configure step
# Download and unpack googletest at configure time
configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download )
if(result)
message(FATAL_ERROR "CMake step for googletest failed: ${result}")
endif()
execute_process(COMMAND ${CMAKE_COMMAND} --build .
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download )
if(result)
message(FATAL_ERROR "Build step for googletest failed: ${result}")
endif()
# Add googletest directly to our build. This defines
# the gtest and gtest_main targets.
add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
${CMAKE_BINARY_DIR}/googletest-build
EXCLUDE_FROM_ALL)
# The gtest/gtest_main targets carry header search path
# dependencies automatically when using CMake 2.8.11 or
# later. Otherwise we have to add them here ourselves.
if (CMAKE_VERSION VERSION_LESS 2.8.11)
include_directories("${gtest_SOURCE_DIR}/include")
endif()
## Main Project
include_directories(inc)
file(GLOB SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/src/*.c)
add_library(foo SHARED ${SOURCES})
## Test
enable_testing()
set(PROJECT_TEST_NAME ${PROJECT_NAME}_test)
file(GLOB TEST_SRC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/test/*.c)
message(STATUS "Test case source files" ${TEST_SRC_FILES})
add_executable(${PROJECT_TEST_NAME} ${TEST_SRC_FILES})
target_link_libraries(${PROJECT_TEST_NAME}
foo
gtest_main
)
add_test(NAME ${PROJECT_TEST_NAME} COMMAND ${PROJECT_TEST_NAME})
我尝试使用include_directories，其中包含我的googletest包含目录的完整路径但没有太多结果。所以我有点想法
问候
答案 0 :(得分：0)
你应该在make文件中进行更改，给出正确的目录和lib。
在您的cmakeList文件中，您应该进行以下更改。
步骤：1
add_subdirectory（$ {CMAKE_BINARY_DIR} / googletest）
步骤：2 你还应该包括lib gtest
target_link_libraries（$ {PROJECT_TEST_NAME} FOO GTEST gtest_main ）