#
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# EnTT
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#
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cmake_minimum_required(VERSION 3.7.2)
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#
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# Building in-tree is not allowed (we take care of your craziness).
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#
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if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
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message(FATAL_ERROR "Prevented in-tree built. Please create a build directory outside of the source code and call cmake from there. Thank you.")
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endif()
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#
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# Project configuration
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#
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project(EnTT VERSION 3.1.0)
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include(GNUInstallDirs)
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Debug)
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endif()
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set(SETTINGS_ORGANIZATION "Michele Caini")
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set(SETTINGS_APPLICATION ${PROJECT_NAME})
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set(PROJECT_AUTHOR "Michele Caini")
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set(PROJECT_AUTHOR_EMAIL "michele.caini@gmail.com")
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message("*")
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message("* ${PROJECT_NAME} v${PROJECT_VERSION} (${CMAKE_BUILD_TYPE})")
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message("* Copyright (c) 2017-2019 ${PROJECT_AUTHOR} <${PROJECT_AUTHOR_EMAIL}>")
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message("*")
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option(USE_LIBCPP "Use libc++ by adding -stdlib=libc++ flag if availbale." ON)
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option(USE_ASAN "Use address sanitizer by adding -fsanitize=address -fno-omit-frame-pointer flags" OFF)
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option(USE_COMPILE_OPTIONS "Use compile options from EnTT." ON)
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#
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# Compiler stuff
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#
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if(NOT MSVC AND USE_LIBCPP)
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include(CheckCXXSourceCompiles)
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include(CMakePushCheckState)
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cmake_push_check_state()
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -stdlib=libc++")
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check_cxx_source_compiles("
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#include<type_traits>
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int main() { return std::is_same_v<int, int> ? 0 : 1; }
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" HAS_LIBCPP)
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if(NOT HAS_LIBCPP)
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message(WARNING "The option USE_LIBCPP is set (by default) but libc++ is not available. The flag will not be added to the target.")
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endif()
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cmake_pop_check_state()
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endif()
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#
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# Add EnTT target
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#
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add_library(EnTT INTERFACE)
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configure_file(${EnTT_SOURCE_DIR}/cmake/in/version.h.in ${EnTT_SOURCE_DIR}/src/entt/config/version.h @ONLY)
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target_include_directories(
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EnTT INTERFACE
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$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
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)
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target_compile_definitions(
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EnTT
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INTERFACE $<$<AND:$<CONFIG:Debug>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:DEBUG>
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INTERFACE $<$<AND:$<CONFIG:Release>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:RELEASE>
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)
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if(USE_ASAN)
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target_compile_options(EnTT INTERFACE $<$<AND:$<CONFIG:Debug>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:-fsanitize=address -fno-omit-frame-pointer>)
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target_link_libraries(EnTT INTERFACE $<$<AND:$<CONFIG:Debug>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:-fsanitize=address -fno-omit-frame-pointer>)
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endif()
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if(USE_COMPILE_OPTIONS)
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target_compile_options(
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EnTT
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INTERFACE $<$<AND:$<CONFIG:Debug>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:-O0 -g>
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# it seems that -O3 ruins a bit the performance when using clang ...
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INTERFACE $<$<AND:$<CONFIG:Release>,$<CXX_COMPILER_ID:Clang>>:-O2>
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# ... on the other side, GCC is incredibly comfortable with it.
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INTERFACE $<$<AND:$<CONFIG:Release>,$<CXX_COMPILER_ID:GNU>>:-O3>
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)
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endif()
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if(HAS_LIBCPP)
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target_compile_options(EnTT BEFORE INTERFACE -stdlib=libc++)
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endif()
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target_compile_features(EnTT INTERFACE cxx_std_17)
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#
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# Install EnTT
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#
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if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
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set(CUSTOM_INSTALL_CONFIGDIR cmake)
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else()
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set(CUSTOM_INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/entt)
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endif()
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install(DIRECTORY src/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(TARGETS EnTT EXPORT EnTTTargets)
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export(EXPORT EnTTTargets FILE ${EnTT_BINARY_DIR}/EnTTTargets.cmake)
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install(
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EXPORT EnTTTargets
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FILE EnTTTargets.cmake
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DESTINATION ${CUSTOM_INSTALL_CONFIGDIR}
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)
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#
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# Build tree package config file
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#
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configure_file(cmake/in/EnTTBuildConfig.cmake.in EnTTConfig.cmake @ONLY)
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include(CMakePackageConfigHelpers)
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#
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# Install tree package config file
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#
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configure_package_config_file(
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cmake/in/EnTTConfig.cmake.in
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${CUSTOM_INSTALL_CONFIGDIR}/EnTTConfig.cmake
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INSTALL_DESTINATION ${CUSTOM_INSTALL_CONFIGDIR}
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PATH_VARS CMAKE_INSTALL_INCLUDEDIR
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)
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write_basic_package_version_file(
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${EnTT_BINARY_DIR}/EnTTConfigVersion.cmake
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY AnyNewerVersion
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)
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install(
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FILES
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${EnTT_BINARY_DIR}/${CUSTOM_INSTALL_CONFIGDIR}/EnTTConfig.cmake
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${EnTT_BINARY_DIR}/EnTTConfigVersion.cmake
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DESTINATION ${CUSTOM_INSTALL_CONFIGDIR}
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)
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export(PACKAGE EnTT)
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#
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# Tests
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#
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option(BUILD_TESTING "Enable testing with ctest." OFF)
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if(BUILD_TESTING)
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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find_package(Threads REQUIRED)
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option(FIND_GTEST_PACKAGE "Enable finding gtest package." OFF)
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if(FIND_GTEST_PACKAGE)
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find_package(GTest REQUIRED)
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else()
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# gtest, gtest_main, gmock and gmock_main targets are available from now on
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set(GOOGLETEST_DEPS_DIR ${EnTT_SOURCE_DIR}/deps/googletest)
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configure_file(${EnTT_SOURCE_DIR}/cmake/in/googletest.in ${GOOGLETEST_DEPS_DIR}/CMakeLists.txt)
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execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" . WORKING_DIRECTORY ${GOOGLETEST_DEPS_DIR})
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execute_process(COMMAND ${CMAKE_COMMAND} --build . WORKING_DIRECTORY ${GOOGLETEST_DEPS_DIR})
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set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
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add_subdirectory(${GOOGLETEST_DEPS_DIR}/src ${GOOGLETEST_DEPS_DIR}/build)
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target_compile_features(gmock_main PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_COMPILE_FEATURES>)
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target_compile_features(gmock PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_COMPILE_FEATURES>)
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add_library(GTest::Main ALIAS gtest_main)
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endif()
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option(BUILD_BENCHMARK "Build benchmark." OFF)
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option(BUILD_LIB "Build lib example." OFF)
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option(BUILD_MOD "Build mod example." OFF)
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option(BUILD_SNAPSHOT "Build snapshot example." OFF)
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enable_testing()
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add_subdirectory(test)
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endif()
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#
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# Documentation
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#
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option(BUILD_DOCS "Enable building with documentation." OFF)
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if(BUILD_DOCS)
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find_package(Doxygen 1.8)
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if(DOXYGEN_FOUND)
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add_subdirectory(docs)
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endif()
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endif()
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#
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# AOB
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#
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add_custom_target(
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entt_aob
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SOURCES
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appveyor.yml
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AUTHORS
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CONTRIBUTING.md
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LICENSE
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README.md
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TODO
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.travis.yml
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)
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