具有许多测试的 CMake 单元结构

Question

我想设置 cmake 以在具有单元测试的项目上运行。项目结构如下：

|---CMakeLists.txt
|---build
|---source
|   |---CMakeLists.txt
|   |---many .cpp and .h files
|---tests
|   |---CMakeLists.txt
|   |---many .cpp files

tests 中的源文件使用 Boost unit_test.h 库。

我的外层CMakeLists.txt如下：

cmake_minimum_required(VERSION 2.8.11)

set(CMAKE_CXX_FLAGS "-std=c++11")

project(MyProject CXX)
add_subdirectory(source)
add_subdirectory(tests)
enable_testing()

source 文件夹中的CMakeLists.txt 是：

file( GLOB LIB_SOURCES *.cpp )
file( GLOB LIB_HEADERS *.h )
add_library( MyProject_lib ${LIB_SOURCES} ${LIB_HEADERS} )

而tests 文件夹中的CMakeLists.txt 是：

# require old policy to allow for source files containing the name "test"
cmake_policy(SET CMP0037 OLD)
# Locate Boost libraries: unit_test_framework, date_time and regex
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost 1.59 REQUIRED COMPONENTS unit_test_framework date_time regex)

include_directories("${CMAKE_SOURCE_DIR}/source" ${Boost_INCLUDE_DIRS})

file(GLOB APP_SOURCES *.cpp)
foreach(testsourcefile ${APP_SOURCES})
    string(REPLACE ".cpp" "" testname ${testsourcefile})
    add_executable(${testname} ${testsourcefile})
    target_link_libraries(${testname} LINK_PUBLIC ${Boost_LIBRARIES} MyProject_lib)
    add_custom_target(targetname)
    add_custom_command(TARGET targetname POST_BUILD COMMAND ${testname})
endforeach(testsourcefile ${APP_SOURCES})

如果我用add_custom_target 和add_custom_command 注释这些行，则此配置的结果是库已正确构建和链接，但没有编译任何测试。

如果我不使用add_custom_target 和add_custom_command 注释这两行，运行cmake 得到的错误是：

CMake Error at tests/CMakeLists.txt:25 (add_custom_target):
add_custom_target cannot create target "targetname" because another target
with the same name already exists.  The existing target is a custom target
created in source directory "/tests".  See
documentation for policy CMP0002 for more details.

由于我有大量的测试，一一列出是不切实际的。我想让 cmake 找到所有 .cpp 文件，就像对源文件夹中的库所做的那样，编译并运行它们。

Answer 1

这是我在库中使用的解决方案：

FILE( GLOB log_testprograms *.cpp )

FOREACH( testsource ${log_testprograms} )
   GET_FILENAME_COMPONENT( filename ${testsource} NAME_WE )
   celma_add_celma_boost_testprogram( ${filename} )
ENDFOREACH()

celma_add_celma_boost_testprogram 是这样的宏：

macro( celma_add_celma_boost_testprogram  filename )
   add_executable(        ${filename}  ${filename}.cpp )
   target_link_libraries( ${filename}  celma ${Boost_Test_Link_Libs} )
   add_test(              ${filename}  ${CMAKE_CURRENT_BINARY_DIR}/${filename} )
endmacro( celma_add_celma_boost_testprogram )

Celma 是我的库的名称，变量 Boost_Test_Link_Libs 包含要链接的 Boost 库列表，包括 Boost.Test 库。