Abseil Common Libraries (C++) (grcp 依赖)
https://abseil.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
4.7 KiB
160 lines
4.7 KiB
# |
|
# 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. |
|
cmake_policy(SET CMP0025 NEW) |
|
|
|
# if command can use IN_LIST |
|
cmake_policy(SET CMP0057 NEW) |
|
|
|
# Project version variables are the empty std::string if version is unspecified |
|
cmake_policy(SET CMP0048 NEW) |
|
|
|
project(absl) |
|
|
|
# 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) |
|
else() |
|
set(ABSL_ENABLE_INSTALL TRUE) |
|
endif() |
|
|
|
list(APPEND CMAKE_MODULE_PATH |
|
${CMAKE_CURRENT_LIST_DIR}/CMake |
|
${CMAKE_CURRENT_LIST_DIR}/absl/copts |
|
) |
|
|
|
include(AbseilInstallDirs) |
|
include(CMakePackageConfigHelpers) |
|
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) |
|
set(absl_gtest_src_dir ${CMAKE_BINARY_DIR}/googletest-src) |
|
set(absl_gtest_build_dir ${CMAKE_BINARY_DIR}/googletest-build) |
|
endif() |
|
|
|
check_target(gtest) |
|
check_target(gtest_main) |
|
check_target(gmock) |
|
|
|
list(APPEND ABSL_TEST_COMMON_LIBRARIES |
|
gtest_main |
|
gtest |
|
gmock |
|
${CMAKE_THREAD_LIBS_INIT} |
|
) |
|
endif() |
|
|
|
add_subdirectory(absl) |
|
|
|
if(ABSL_ENABLE_INSTALL) |
|
# absl:lts-remove-begin(system installation is supported for LTS releases) |
|
# We don't support system-wide installation |
|
list(APPEND SYSTEM_INSTALL_DIRS "/usr/local" "/usr" "/opt/" "/opt/local" "c:/Program Files/${PROJECT_NAME}") |
|
if(NOT DEFINED CMAKE_INSTALL_PREFIX OR CMAKE_INSTALL_PREFIX IN_LIST SYSTEM_INSTALL_DIRS) |
|
message(WARNING "\ |
|
The default and system-level install directories are unsupported except in LTS \ |
|
releases of Abseil. Please set CMAKE_INSTALL_PREFIX to install Abseil in your \ |
|
source or build tree directly.\ |
|
") |
|
endif() |
|
# absl:lts-remove-end |
|
|
|
# install as a subdirectory only |
|
install(EXPORT ${PROJECT_NAME}Targets |
|
NAMESPACE absl:: |
|
DESTINATION "${ABSL_INSTALL_CONFIGDIR}" |
|
) |
|
|
|
configure_package_config_file( |
|
CMake/abslConfig.cmake.in |
|
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake" |
|
INSTALL_DESTINATION "${ABSL_INSTALL_CONFIGDIR}" |
|
) |
|
install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake" |
|
DESTINATION "${ABSL_INSTALL_CONFIGDIR}" |
|
) |
|
|
|
# Abseil only has a version in LTS releases. This mechanism is accomplished |
|
# Abseil's internal Copybara (https://github.com/google/copybara) workflows and |
|
# isn't visible in the CMake buildsystem itself. |
|
if(absl_VERSION) |
|
write_basic_package_version_file( |
|
"${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake" |
|
COMPATIBILITY ExactVersion |
|
) |
|
|
|
install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake" |
|
DESTINATION ${ABSL_INSTALL_CONFIGDIR} |
|
) |
|
endif() # absl_VERSION |
|
|
|
install(DIRECTORY absl |
|
DESTINATION ${ABSL_INSTALL_INCLUDEDIR} |
|
FILES_MATCHING |
|
PATTERN "*.inc" |
|
PATTERN "*.h" |
|
) |
|
endif() # ABSL_ENABLE_INSTALL
|
|
|