| # |
| # Copyright 2017 The Abseil Authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # 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) |
| |
| # Compiler id for Apple Clang is now AppleClang. |
| if (POLICY CMP0025) |
| cmake_policy(SET CMP0025 NEW) |
| endif() |
| |
| project(absl) |
| |
| list(APPEND CMAKE_MODULE_PATH |
| ${CMAKE_CURRENT_LIST_DIR}/CMake |
| ${CMAKE_CURRENT_LIST_DIR}/absl/copts |
| ) |
| |
| include(GNUInstallDirs) |
| include(AbseilHelpers) |
| |
| |
| ## |
| ## Using absl targets |
| ## |
| ## all public absl targets are |
| ## exported with the absl:: prefix |
| ## |
| ## e.g absl::base absl::synchronization absl::strings .... |
| ## |
| ## DO NOT rely on the internal targets outside of the prefix |
| |
| |
| # include current path |
| list(APPEND ABSL_COMMON_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}) |
| |
| if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") |
| set(ABSL_USING_CLANG ON) |
| else() |
| set(ABSL_USING_CLANG OFF) |
| endif() |
| |
| # find dependencies |
| ## pthread |
| find_package(Threads REQUIRED) |
| |
| option(ABSL_USE_GOOGLETEST_HEAD |
| "If ON, abseil will download HEAD from googletest at config time." OFF) |
| |
| option(ABSL_RUN_TESTS "If ON, Abseil tests will be run." OFF) |
| |
| if(${ABSL_RUN_TESTS}) |
| # enable CTest. This will set BUILD_TESTING to ON unless otherwise specified |
| # on the command line |
| include(CTest) |
| enable_testing() |
| endif() |
| |
| ## check targets |
| if(BUILD_TESTING) |
| |
| if(${ABSL_USE_GOOGLETEST_HEAD}) |
| include(CMake/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) |