CMake プロジェクト (2) #

cmake_minimum_required(VERSION 3.0)
project(cmake_sample VERSION 0.0.1 LANGUAGES CXX)

add_subdirectory(src)
add_subdirectory(test)
add_subdirectory(main)
add_subdirectory(include)

find_program(DOXYGEN doxygen)
if (NOT DOXYGEN)
  message(WARNING "program doxygen not found")
endif()

ADD_CUSTOM_TARGET(docs)
ADD_CUSTOM_COMMAND(
  TARGET docs
  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
  COMMAND doxygen
  COMMAND mv doxygen/ build/)

install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/cpp_env_sample
  DESTINATION include)

set(CMAKE_SKIP_BUILD_RPATH FALSE)
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH FALSE)
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")

add_executable(cmsample main.cc)

target_link_libraries(cmsample cmsamplelib)

install(TARGETS cmsample
  RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)

add_library(cmsamplelib SHARED example.cc)

target_include_directories(cmsamplelib PUBLIC
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>
)

install(TARGETS cmsamplelib
  EXPORT cmsamplelib-config
  LIBRARY DESTINATION lib)

install(EXPORT cmsamplelib-config
  NAMESPACE cmsamplelib::
  DESTINATION lib/cmake/cmsamplelib)

include(CMakePackageConfigHelpers)

write_basic_package_version_file(
    ${CMAKE_CURRENT_BINARY_DIR}/cmsamplelib-config-version.cmake
    COMPATIBILITY SameMajorVersion)

install(FILES ${CMAKE_CURRENT_BINARY_DIR}/cmsamplelib-config-version.cmake
    DESTINATION lib/cmake/cmsamplelib)

add_library(cmsaplelib::cmsamplelib ALIAS cmsamplelib)

include(FetchContent)
FetchContent_Declare(
  googletest
  URL https://github.com/google/googletest/archive/refs/tags/v1.14.0.zip
)

# For Windows: Prevent overriding the parent project's compiler/linker settings
if (WIN32)
  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
endif()
set(BUILD_GMOCK OFF CACHE BOOL "" FORCE)
set(INSTALL_GTEST OFF CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)

add_executable(gtest-${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/src/example.cc ${PROJECT_SOURCE_DIR}/test/gtest_example.cc)
target_link_libraries(gtest-${PROJECT_NAME} PRIVATE gtest_main)
target_include_directories(gtest-${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/include)
add_test(COMMAND gtest-${PROJECT_NAME})
enable_testing()

find_program(GCOV gcov)
if (NOT GCOV)
  message(WARNING "program gcov not found")
endif()

find_program(LCOV lcov)
if (NOT LCOV)
  message(WARNING "program lcov not found")
endif()

if (GCOV AND LCOV)
  set(COVERAGE coverage.info)
  set(LCOVDIR lcov)
  ADD_CUSTOM_TARGET(lcov DEPENDS gtest-${PROJECT_NAME})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --coverage")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
  ADD_CUSTOM_COMMAND(
    TARGET lcov
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/build/test/CMakeFiles/gtest-${PROJECT_NAME}.dir/
    COMMAND ${PROJECT_SOURCE_DIR}/build/test/gtest-${PROJECT_NAME}
    COMMAND lcov --capture --directory . --output-file ${COVERAGE}
    COMMAND lcov --remove ${COVERAGE} **include/c++/** --output-file ${COVERAGE}
    COMMAND lcov --remove ${COVERAGE} **bits** --output-file ${COVERAGE}
    COMMAND lcov --remove ${COVERAGE} **gtest*.h --output-file ${COVERAGE}
    COMMAND lcov --remove ${COVERAGE} **gtest*.cc --output-file ${COVERAGE}
    COMMAND genhtml ${COVERAGE} --output-directory ${PROJECT_SOURCE_DIR}/build/${LCOVDIR}
    COMMAND rm -f *.gcno
    COMMAND rm -f *.gcda
    COMMAND rm -f ${COVERAGE}
    COMMAND echo -n -e ""
    COMMAND echo ${LCOVDIR}/index.html)
endif()

$ cmake -S . -B build
$ cmake --build build

$ build/main/cmsample
Usage: build/main/cmsample <name> <value> <value2>
$ build/main/cmsample a 1 2
name : a
value: 3

$ cd build
$ test/gtest-cmake_sample 
Running main() from /home/hiroshi/Documents/cpp/cmake_sample/build/_deps/googletest-src/googletest/src/gtest_main.cc
[==========] Running 4 tests from 1 test suite.
[----------] Global test environment set-up.
[----------] 4 tests from ExampleTest
[ RUN      ] ExampleTest.SetValue
[       OK ] ExampleTest.SetValue (0 ms)
[ RUN      ] ExampleTest.AddValue
[       OK ] ExampleTest.AddValue (0 ms)
[ RUN      ] ExampleTest.SetName
[       OK ] ExampleTest.SetName (0 ms)
[ RUN      ] ExampleTest.Show
[       OK ] ExampleTest.Show (0 ms)
[----------] 4 tests from ExampleTest (0 ms total)

[----------] Global test environment tear-down
[==========] 4 tests from 1 test suite ran. (0 ms total)
[  PASSED  ] 4 tests.

$ cmake -S . -B build
$ cd build
$ make docs

$ firefox doxygen/html/index.html

$ cmake -S . -B build
$ cd build
$ make lcov

$ firefox lcov/index.html

$ cmake -S . -B build
$ cd build/
$ sudo make install
...(略)...
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/libcmsamplelib.so
-- Up-to-date: /usr/local/lib/cmake/cmsamplelib/cmsamplelib-config.cmake
-- Up-to-date: /usr/local/lib/cmake/cmsamplelib/cmsamplelib-config-noconfig.cmake
-- Up-to-date: /usr/local/lib/cmake/cmsamplelib/cmsamplelib-config-version.cmake
-- Installing: /usr/local/bin/cmsample
-- Set runtime path of "/usr/local/bin/cmsample" to "/usr/local/lib"
-- Up-to-date: /usr/local/include/cpp_env_sample
-- Up-to-date: /usr/local/include/cpp_env_sample/example.h