Export CMake Config file and "modernize" CMake scripts (#87)
* CMake modifications and Config file generation * CMake minor style changes * Get rid of commented lines, fix indentation * Respect Windows conventions for CMake config directory, Fix error with Config Version file, Export CMake package * Add CMake option for use of ENTT_COMPILE_OPTIONS, Add CMake option for using libc++, Remove from EnTT target and move it to test targets * Fix indentation * Fix indentation (again) * Fix Windows problems with compile option -Wall in not using it on Windows * Improved generator expression The problem with -Wall is not due to the platform but due to the compiler MSVC * Set compatibility for ConfigVersion file to AnyNewerVersion, Add PATH_VARS CMAKE_INSTALL_INCLUDE_DIR of configure_package_config_file, Remove redundant options, correct target_include_directory for INSTALL_INTERFACE, set the Version in EnTTConfig file and check CMake version * Add missing closing brace, Add a special config file for the build tree
This commit is contained in:
Malte
Michele Caini
129
CMakeLists.txt
129
CMakeLists.txt
@@ -4,6 +4,8 @@
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cmake_minimum_required(VERSION 3.2)
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include(GNUInstallDirs)
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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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@@ -32,48 +34,117 @@ message("* ${PROJECT_NAME} v${PROJECT_VERSION} (${CMAKE_BUILD_TYPE})")
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message("* Copyright (c) 2018 ${PROJECT_AUTHOR} <${PROJECT_AUTHOR_EMAIL}>")
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message("*")
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option(ENTT_COMPILE_OPTIONS "Use compile options from EnTT." ON)
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option(USE_LIBCPP "Use libc++ by adding -stdlib=libc++ flag if availbale." ON)
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#
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# Compiler stuff
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#
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set(CMAKE_CXX_STANDARD 14)
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set(CMAKE_CXX_EXTENSIONS OFF)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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if(NOT MSVC)
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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(OLD_CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -stdlib=libc++")
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check_cxx_source_compiles("
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#include<type_traits>
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int main() { return std::is_same<int, int>::value ? 0 : 1; }
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" HAS_LIBCPP)
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if(NOT HAS_LIBCPP)
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set(CMAKE_CXX_FLAGS "${OLD_CMAKE_CXX_FLAGS}")
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if(USE_LIBCPP AND 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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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wall")
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DRELEASE")
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 -g -DDEBUG")
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
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if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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# it seems that -O3 ruins the performance when using clang ...
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
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else()
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# ... on the other side, GCC is incredibly comfortable with it.
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
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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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# Include EnTT
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# Add EnTT target
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#
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include_directories(${entt_SOURCE_DIR}/src)
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add_library(EnTT INTERFACE)
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target_include_directories(EnTT INTERFACE
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$<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(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(ENTT_COMPILE_OPTIONS)
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target_compile_options(EnTT
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INTERFACE $<$<AND:$<CONFIG:Debug>,$<NOT:$<CXX_COMPILER_ID:MSVC>>>:-O0 -g>
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INTERFACE $<$<AND:$<CONFIG:Release>,$<CXX_COMPILER_ID:Clang>>:-O2>
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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(USE_LIBCPP AND HAS_LIBCPP)
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target_compile_options(EnTT BEFORE
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INTERFACE -stdlib=libc++
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)
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endif()
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target_compile_features(EnTT
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INTERFACE cxx_std_14
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)
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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(ENTT_INSTALL_CONFIGDIR cmake)
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else()
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set(ENTT_INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/entt)
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endif()
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install(DIRECTORY src/
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DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
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)
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install(TARGETS EnTT EXPORT EnTTTargets)
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export(EXPORT EnTTTargets
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FILE ${CMAKE_CURRENT_BINARY_DIR}/EnTTTargets.cmake
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)
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install(EXPORT EnTTTargets
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FILE EnTTTargets.cmake
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DESTINATION ${ENTT_INSTALL_CONFIGDIR}
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)
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# build tree package config file
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configure_file(cmake/in/EnTTBuildConfig.cmake.in EnTTConfig.cmake @ONLY)
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include(CMakePackageConfigHelpers)
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# install tree package config file
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configure_package_config_file(cmake/in/EnTTConfig.cmake.in
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${ENTT_INSTALL_CONFIGDIR}/EnTTConfig.cmake
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INSTALL_DESTINATION ${ENTT_INSTALL_CONFIGDIR}
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PATH_VARS CMAKE_INSTALL_INCLUDEDIR
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NO_CHECK_REQUIRED_COMPONENTS_MACRO
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)
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write_basic_package_version_file(
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${CMAKE_CURRENT_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(FILES ${CMAKE_CURRENT_BINARY_DIR}/${ENTT_INSTALL_CONFIGDIR}/EnTTConfig.cmake
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${CMAKE_CURRENT_BINARY_DIR}/EnTTConfigVersion.cmake
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DESTINATION ${ENTT_INSTALL_CONFIGDIR}
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)
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export(PACKAGE EnTT)
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#
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# Tests
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@@ -105,10 +176,14 @@ endif()
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# Documentation
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#
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find_package(Doxygen 1.8)
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option(BUILD_DOCS "Enable building with documentation." OFF)
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if(DOXYGEN_FOUND)
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add_subdirectory(docs)
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if(BUILD_DOCS)
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find_package(Doxygen 1.8)
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if(DOXYGEN_FOUND)
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add_subdirectory(docs)
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endif()
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endif()
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#
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@@ -292,8 +292,8 @@ The documentation is based on [doxygen](http://www.stack.nl/~dimitri/doxygen/).
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To build it:
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$ cd build
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$ cmake ..
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$ make docs
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$ cmake .. -DBUILD_DOCS=ON
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$ make
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The API reference will be created in HTML format within the directory
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`build/docs/html`. To navigate it with your favorite browser:
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@@ -307,7 +307,8 @@ for the latest version.
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## Tests
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To compile and run the tests, `EnTT` requires *googletest*.<br/>
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`cmake` will download and compile the library before to compile anything else.
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`cmake` will download and compile the library before compiling anything else.
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In order to build without tests set CMake option `BUILD_TESTING=OFF`.
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To build the most basic set of tests:
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6
cmake/in/EnTTBuildConfig.cmake.in
Normal file
6
cmake/in/EnTTBuildConfig.cmake.in
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@@ -0,0 +1,6 @@
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set(ENTT_VERSION "@PROJECT_VERSION@")
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set(ENTT_INCLUDE_DIRS "@CMAKE_CURRENT_SOURCE_DIR@/src")
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if(NOT CMAKE_VERSION VERSION_LESS "3.0")
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include("${CMAKE_CURRENT_LIST_DIR}/EnTTTargets.cmake")
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endif()
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11
cmake/in/EnTTConfig.cmake.in
Normal file
11
cmake/in/EnTTConfig.cmake.in
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@@ -0,0 +1,11 @@
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set(ENTT_VERSION "@PROJECT_VERSION@")
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@PACKAGE_INIT@
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set_and_check(ENTT_INCLUDE_DIRS "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@")
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if(NOT CMAKE_VERSION VERSION_LESS "3.0")
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include("${CMAKE_CURRENT_LIST_DIR}/EnTTTargets.cmake")
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endif()
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check_required_components("@PROJECT_NAME@")
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@@ -2,8 +2,6 @@
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# Doxygen configuration (documentation)
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#
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set(TARGET_DOCS docs)
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set(DOXY_SOURCE_DIRECTORY ${entt_SOURCE_DIR}/src)
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set(DOXY_DOCS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
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set(DOXY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
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@@ -11,7 +9,7 @@ set(DOXY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
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configure_file(doxy.in doxy.cfg @ONLY)
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add_custom_target(
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${TARGET_DOCS}
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docs ALL
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COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxy.cfg
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WORKING_DIRECTORY ${entt_SOURCE_DIR}
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VERBATIM
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@@ -4,9 +4,30 @@
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add_library(odr OBJECT odr.cpp)
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set_target_properties(odr PROPERTIES CXX_EXTENSIONS OFF)
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target_include_directories(odr
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PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_INCLUDE_DIRECTORIES>
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)
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target_compile_definitions(odr
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PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_COMPILE_DEFINITIONS>
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)
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target_compile_options(odr
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PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_COMPILE_OPTIONS>
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PRIVATE $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-pedantic -Wall>
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)
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target_compile_features(odr
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PRIVATE $<TARGET_PROPERTY:EnTT,INTERFACE_COMPILE_FEATURES>
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)
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macro(ADD_ENTT_TEST TEST_NAME TEST_SOURCE)
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add_executable(${TEST_NAME} $<TARGET_OBJECTS:odr> ${TEST_SOURCE})
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target_link_libraries(${TEST_NAME} PRIVATE gtest_main Threads::Threads)
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target_link_libraries(${TEST_NAME} PRIVATE EnTT gtest_main Threads::Threads)
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set_target_properties(${TEST_NAME} PROPERTIES CXX_EXTENSIONS OFF)
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target_compile_options(${TEST_NAME} PRIVATE $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-pedantic -Wall>)
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add_test(NAME ${TEST_NAME} COMMAND ${TEST_NAME})
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endmacro()
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