diff options
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 79869ff5..3a9e521f 100644 --- a/CMakeLists.txt +++ b/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) @@ -46,7 +43,12 @@ if (POLICY CMP0091) cmake_policy(SET CMP0091 NEW) endif (POLICY CMP0091) -project(absl LANGUAGES CXX VERSION 20220623) +# try_compile() honors the CMAKE_CXX_STANDARD value +if (POLICY CMP0067) + cmake_policy(SET CMP0067 NEW) +endif (POLICY CMP0067) + +project(absl LANGUAGES CXX VERSION 20230125) include(CTest) # Output directory is correct by default for most build setups. However, when @@ -64,12 +66,16 @@ else() 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" + "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((${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() +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 ${CMAKE_CURRENT_LIST_DIR}/absl/copts @@ -110,6 +116,10 @@ include(CMakeDependentOption) option(ABSL_BUILD_TESTING "If ON, Abseil will build all of Abseil's own tests." OFF) +option(ABSL_BUILD_TEST_HELPERS + "If ON, Abseil will build libraries that you can use to write tests against Abseil code. This option requires that Abseil is configured to use GoogleTest." + OFF) + option(ABSL_USE_EXTERNAL_GOOGLETEST "If ON, Abseil will assume that the targets for GoogleTest are already provided by the including project. This makes sense when Abseil is used with add_subdirectory." OFF) @@ -129,8 +139,7 @@ set(ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH "If ABSL_USE_GOOGLETEST_HEAD is OFF and ABSL_GOOGLETEST_URL is not set, specifies the directory of a local GoogleTest checkout." ) -if(BUILD_TESTING AND ABSL_BUILD_TESTING) - ## check targets +if((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS) if (ABSL_USE_EXTERNAL_GOOGLETEST) if (ABSL_FIND_GOOGLETEST) find_package(GTest REQUIRED) @@ -162,11 +171,6 @@ if(BUILD_TESTING AND ABSL_BUILD_TESTING) endif() include(CMake/Googletest/DownloadGTest.cmake) endif() - - check_target(GTest::gtest) - check_target(GTest::gtest_main) - check_target(GTest::gmock) - check_target(GTest::gmock_main) endif() add_subdirectory(absl) @@ -211,4 +215,25 @@ if(ABSL_ENABLE_INSTALL) PATTERN "copts" EXCLUDE PATTERN "testdata" EXCLUDE ) + + file(READ "absl/base/options.h" ABSL_INTERNAL_OPTIONS_H_CONTENTS) + if (ABSL_INTERNAL_AT_LEAST_CXX17) + string(REGEX REPLACE + "#define ABSL_OPTION_USE_STD_([^ ]*) 2" + "#define ABSL_OPTION_USE_STD_\\1 1" + ABSL_INTERNAL_OPTIONS_H_PINNED + "${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 |