summaryrefslogtreecommitdiff
path: root/abseil-cpp/CMakeLists.txt
diff options
context:
space:
mode:
Diffstat (limited to 'abseil-cpp/CMakeLists.txt')
-rw-r--r--abseil-cpp/CMakeLists.txt143
1 files changed, 105 insertions, 38 deletions
diff --git a/abseil-cpp/CMakeLists.txt b/abseil-cpp/CMakeLists.txt
index f0af6f6..eef6626 100644
--- a/abseil-cpp/CMakeLists.txt
+++ b/abseil-cpp/CMakeLists.txt
@@ -14,12 +14,9 @@
# limitations under the License.
#
-# Most widely used distributions have cmake 3.5 or greater available as of March
-# 2019. A notable exception is RHEL-7 (CentOS7). You can install a current
-# version of CMake by first installing Extra Packages for Enterprise Linux
-# (https://fedoraproject.org/wiki/EPEL#Extra_Packages_for_Enterprise_Linux_.28EPEL.29)
-# and then issuing `yum install cmake3` on the command line.
-cmake_minimum_required(VERSION 3.5)
+# https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md
+# As of 2022-09-06, CMake 3.10 is the minimum supported version.
+cmake_minimum_required(VERSION 3.10)
# Compiler id for Apple Clang is now AppleClang.
if (POLICY CMP0025)
@@ -41,7 +38,23 @@ if (POLICY CMP0077)
cmake_policy(SET CMP0077 NEW)
endif (POLICY CMP0077)
-project(absl CXX)
+# Allow the user to specify the MSVC runtime
+if (POLICY CMP0091)
+ cmake_policy(SET CMP0091 NEW)
+endif (POLICY CMP0091)
+
+# try_compile() honors the CMAKE_CXX_STANDARD value
+if (POLICY CMP0067)
+ cmake_policy(SET CMP0067 NEW)
+endif (POLICY CMP0067)
+
+# Allow the user to specify the CMAKE_MSVC_DEBUG_INFORMATION_FORMAT
+if (POLICY CMP0141)
+ cmake_policy(SET CMP0141 NEW)
+endif (POLICY CMP0141)
+
+project(absl LANGUAGES CXX VERSION 20230802)
+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
@@ -51,19 +64,30 @@ 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}$")
+if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
option(ABSL_ENABLE_INSTALL "Enable install rule" OFF)
else()
option(ABSL_ENABLE_INSTALL "Enable install rule" ON)
endif()
+option(ABSL_PROPAGATE_CXX_STD
+ "Use CMake C++ standard meta features (e.g. cxx_std_14) that propagate to targets that link to Abseil"
+ OFF) # TODO: Default to ON for CMake 3.8 and greater.
+if(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()
+
+option(ABSL_USE_SYSTEM_INCLUDES
+ "Silence warnings in Abseil headers by marking them as SYSTEM includes"
+ OFF)
+
list(APPEND CMAKE_MODULE_PATH
${CMAKE_CURRENT_LIST_DIR}/CMake
${CMAKE_CURRENT_LIST_DIR}/absl/copts
)
-include(AbseilInstallDirs)
include(CMakePackageConfigHelpers)
+include(GNUInstallDirs)
include(AbseilDll)
include(AbseilHelpers)
@@ -92,64 +116,86 @@ endif()
## pthread
find_package(Threads REQUIRED)
+include(CMakeDependentOption)
+
+option(ABSL_BUILD_TESTING
+ "If ON, Abseil will build all of Abseil's own tests." OFF)
+
+option(ABSL_BUILD_TEST_HELPERS
+ "If ON, Abseil will build libraries that you can use to write tests against Abseil code. This option requires that Abseil is configured to use GoogleTest."
+ OFF)
+
option(ABSL_USE_EXTERNAL_GOOGLETEST
- "If ON, Abseil will assume that the targets for GoogleTest are already provided by the including project. This makes sense when Abseil is used with add_subproject." OFF)
+ "If ON, Abseil will assume that the targets for GoogleTest are already provided by the including project. This makes sense when Abseil is used with add_subdirectory." OFF)
+
+cmake_dependent_option(ABSL_FIND_GOOGLETEST
+ "If ON, Abseil will use find_package(GTest) rather than assuming that GoogleTest is already provided by the including project."
+ ON
+ "ABSL_USE_EXTERNAL_GOOGLETEST"
+ OFF)
option(ABSL_USE_GOOGLETEST_HEAD
- "If ON, abseil will download HEAD from googletest at config time." OFF)
+ "If ON, abseil will download HEAD from GoogleTest at config time." OFF)
+
+set(ABSL_GOOGLETEST_DOWNLOAD_URL "" CACHE STRING "If set, download GoogleTest from this URL")
set(ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH
- "If ABSL_USE_GOOGLETEST_HEAD is OFF, specifies the directory of a local googletest checkout."
+ "If ABSL_USE_GOOGLETEST_HEAD is OFF and ABSL_GOOGLETEST_URL is not set, specifies the directory of a local GoogleTest checkout."
)
-option(ABSL_RUN_TESTS "If ON, Abseil tests will be run." OFF)
-
-if(${ABSL_RUN_TESTS})
- # enable CTest. This will set BUILD_TESTING to ON unless otherwise specified
- # on the command line
- include(CTest)
-
- ## check targets
- if (NOT ABSL_USE_EXTERNAL_GOOGLETEST)
+if((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS)
+ if (ABSL_USE_EXTERNAL_GOOGLETEST)
+ if (ABSL_FIND_GOOGLETEST)
+ find_package(GTest REQUIRED)
+ elseif(NOT TARGET GTest::gtest)
+ if(TARGET gtest)
+ # 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)
+ else()
+ 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})
+ 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/main.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)
-
- list(APPEND ABSL_TEST_COMMON_LIBRARIES
- gtest_main
- gtest
- gmock
- ${CMAKE_THREAD_LIBS_INIT}
- )
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
@@ -162,16 +208,37 @@ 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 ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING
PATTERN "*.inc"
PATTERN "*.h"
PATTERN "copts" EXCLUDE
PATTERN "testdata" EXCLUDE
)
+
+ file(READ "absl/base/options.h" ABSL_INTERNAL_OPTIONS_H_CONTENTS)
+ if (ABSL_INTERNAL_AT_LEAST_CXX17)
+ string(REGEX REPLACE
+ "#define ABSL_OPTION_USE_STD_([^ ]*) 2"
+ "#define ABSL_OPTION_USE_STD_\\1 1"
+ ABSL_INTERNAL_OPTIONS_H_PINNED
+ "${ABSL_INTERNAL_OPTIONS_H_CONTENTS}")
+ else()
+ string(REGEX REPLACE
+ "#define ABSL_OPTION_USE_STD_([^ ]*) 2"
+ "#define ABSL_OPTION_USE_STD_\\1 0"
+ ABSL_INTERNAL_OPTIONS_H_PINNED
+ "${ABSL_INTERNAL_OPTIONS_H_CONTENTS}")
+ endif()
+ file(WRITE "${CMAKE_BINARY_DIR}/options-pinned.h" "${ABSL_INTERNAL_OPTIONS_H_PINNED}")
+
+ install(FILES "${CMAKE_BINARY_DIR}/options-pinned.h"
+ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/absl/base
+ RENAME "options.h")
+
endif() # ABSL_ENABLE_INSTALL
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 20:00:19 +0000