diff options
Diffstat (limited to 'third_party/abseil-cpp/CMakeLists.txt')
| -rw-r--r-- | third_party/abseil-cpp/CMakeLists.txt | 135 |
1 files changed, 98 insertions, 37 deletions
diff --git a/third_party/abseil-cpp/CMakeLists.txt b/third_party/abseil-cpp/CMakeLists.txt index 48cb6eb5cf..750a47557d 100644 --- a/third_party/abseil-cpp/CMakeLists.txt +++ b/third_party/abseil-cpp/CMakeLists.txt @@ -22,15 +22,36 @@ cmake_minimum_required(VERSION 3.5) # Compiler id for Apple Clang is now AppleClang. -cmake_policy(SET CMP0025 NEW) +if (POLICY CMP0025) + cmake_policy(SET CMP0025 NEW) +endif (POLICY CMP0025) # if command can use IN_LIST -cmake_policy(SET CMP0057 NEW) +if (POLICY CMP0057) + cmake_policy(SET CMP0057 NEW) +endif (POLICY CMP0057) -# Project version variables are the empty std::string if version is unspecified -cmake_policy(SET CMP0048 NEW) +# Project version variables are the empty string if version is unspecified +if (POLICY CMP0048) + cmake_policy(SET CMP0048 NEW) +endif (POLICY CMP0048) -project(absl CXX) +# option() honor variables +if (POLICY CMP0077) + cmake_policy(SET CMP0077 NEW) +endif (POLICY CMP0077) + +# Allow the user to specify the MSVC runtime +if (POLICY CMP0091) + cmake_policy(SET CMP0091 NEW) +endif (POLICY CMP0091) + +# Set BUILD_TESTING to OFF by default. +# This must come before the project() and include(CTest) lines. +OPTION(BUILD_TESTING "Build tests" OFF) + +project(absl LANGUAGES CXX VERSION 20211102) +include(CTest) # Output directory is correct by default for most build setups. However, when # building Abseil as a DLL, it is important to have the DLL in the same @@ -40,10 +61,17 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) # when absl is included as subproject (i.e. using add_subdirectory(abseil-cpp)) # in the source tree of a project that uses it, install rules are disabled. -if(NOT "^${CMAKE_SOURCE_DIR}$" STREQUAL "^${PROJECT_SOURCE_DIR}$") - set(ABSL_ENABLE_INSTALL FALSE) +if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR) + option(ABSL_ENABLE_INSTALL "Enable install rule" OFF) else() - set(ABSL_ENABLE_INSTALL TRUE) + option(ABSL_ENABLE_INSTALL "Enable install rule" ON) +endif() + +option(ABSL_PROPAGATE_CXX_STD + "Use CMake C++ standard meta features (e.g. cxx_std_11) that propagate to targets that link to Abseil" + OFF) # TODO: Default to ON for CMake 3.8 and greater. +if((${CMAKE_VERSION} VERSION_GREATER_EQUAL 3.8) AND (NOT ABSL_PROPAGATE_CXX_STD)) + message(WARNING "A future Abseil release will default ABSL_PROPAGATE_CXX_STD to ON for CMake 3.8 and up. We recommend enabling this option to ensure your project still builds correctly.") endif() list(APPEND CMAKE_MODULE_PATH @@ -51,8 +79,8 @@ list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/absl/copts ) -include(AbseilInstallDirs) include(CMakePackageConfigHelpers) +include(GNUInstallDirs) include(AbseilDll) include(AbseilHelpers) @@ -81,56 +109,87 @@ endif() ## pthread find_package(Threads REQUIRED) +include(CMakeDependentOption) + +option(ABSL_USE_EXTERNAL_GOOGLETEST + "If ON, Abseil will assume that the targets for GoogleTest are already provided by the including project. This makes sense when Abseil is used with add_subproject." OFF) + +cmake_dependent_option(ABSL_FIND_GOOGLETEST + "If ON, Abseil will use find_package(GTest) rather than assuming that GoogleTest is already provided by the including project." + ON + "ABSL_USE_EXTERNAL_GOOGLETEST" + OFF) + + option(ABSL_USE_GOOGLETEST_HEAD - "If ON, abseil will download HEAD from googletest at config time." OFF) + "If ON, abseil will download HEAD from GoogleTest at config time." OFF) -option(ABSL_RUN_TESTS "If ON, Abseil tests will be run." OFF) +set(ABSL_GOOGLETEST_DOWNLOAD_URL "" CACHE STRING "If set, download GoogleTest from this URL") -if(${ABSL_RUN_TESTS}) - # enable CTest. This will set BUILD_TESTING to ON unless otherwise specified - # on the command line - include(CTest) - enable_testing() -endif() +set(ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH + "If ABSL_USE_GOOGLETEST_HEAD is OFF and ABSL_GOOGLETEST_URL is not set, specifies the directory of a local GoogleTest checkout." + ) -## check targets if(BUILD_TESTING) - - if(${ABSL_USE_GOOGLETEST_HEAD}) - include(CMake/Googletest/DownloadGTest.cmake) - set(absl_gtest_src_dir ${CMAKE_BINARY_DIR}/googletest-src) + ## check targets + if (ABSL_USE_EXTERNAL_GOOGLETEST) + if (ABSL_FIND_GOOGLETEST) + find_package(GTest REQUIRED) + else() + if (NOT TARGET gtest AND NOT TARGET GTest::gtest) + message(FATAL_ERROR "ABSL_USE_EXTERNAL_GOOGLETEST is ON and ABSL_FIND_GOOGLETEST is OFF, which means that the top-level project must build the Google Test project. However, the target gtest was not found.") + endif() + endif() + else() set(absl_gtest_build_dir ${CMAKE_BINARY_DIR}/googletest-build) + if(ABSL_USE_GOOGLETEST_HEAD AND ABSL_GOOGLETEST_DOWNLOAD_URL) + message(FATAL_ERROR "Do not set both ABSL_USE_GOOGLETEST_HEAD and ABSL_GOOGLETEST_DOWNLOAD_URL") + endif() + if(ABSL_USE_GOOGLETEST_HEAD) + set(absl_gtest_download_url "https://github.com/google/googletest/archive/master.zip") + elseif(ABSL_GOOGLETEST_DOWNLOAD_URL) + set(absl_gtest_download_url ${ABSL_GOOGLETEST_DOWNLOAD_URL}) + endif() + if(absl_gtest_download_url) + set(absl_gtest_src_dir ${CMAKE_BINARY_DIR}/googletest-src) + else() + set(absl_gtest_src_dir ${ABSL_LOCAL_GOOGLETEST_DIR}) + endif() + include(CMake/Googletest/DownloadGTest.cmake) endif() - check_target(gtest) - check_target(gtest_main) - check_target(gmock) + if (NOT ABSL_FIND_GOOGLETEST) + # When Google Test is included directly rather than through find_package, the aliases are missing. + add_library(GTest::gtest ALIAS gtest) + add_library(GTest::gtest_main ALIAS gtest_main) + add_library(GTest::gmock ALIAS gmock) + add_library(GTest::gmock_main ALIAS gmock_main) + endif() - list(APPEND ABSL_TEST_COMMON_LIBRARIES - gtest_main - gtest - gmock - ${CMAKE_THREAD_LIBS_INIT} - ) + check_target(GTest::gtest) + check_target(GTest::gtest_main) + check_target(GTest::gmock) + check_target(GTest::gmock_main) endif() add_subdirectory(absl) if(ABSL_ENABLE_INSTALL) + # install as a subdirectory only install(EXPORT ${PROJECT_NAME}Targets NAMESPACE absl:: - DESTINATION "${ABSL_INSTALL_CONFIGDIR}" + DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" ) configure_package_config_file( CMake/abslConfig.cmake.in "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake" - INSTALL_DESTINATION "${ABSL_INSTALL_CONFIGDIR}" + INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" ) install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake" - DESTINATION "${ABSL_INSTALL_CONFIGDIR}" + DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" ) # Abseil only has a version in LTS releases. This mechanism is accomplished @@ -143,14 +202,16 @@ if(ABSL_ENABLE_INSTALL) ) install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake" - DESTINATION ${ABSL_INSTALL_CONFIGDIR} + DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" ) endif() # absl_VERSION install(DIRECTORY absl - DESTINATION ${ABSL_INSTALL_INCLUDEDIR} + DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} FILES_MATCHING PATTERN "*.inc" PATTERN "*.h" - ) + PATTERN "copts" EXCLUDE + PATTERN "testdata" EXCLUDE + ) endif() # ABSL_ENABLE_INSTALL |