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142 lines
6.0 KiB
CMake
142 lines
6.0 KiB
CMake
#
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# Copyright (c) Contributors to the Open 3D Engine Project.
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# For complete copyright and license terms please see the LICENSE at the root of this distribution.
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#
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# SPDX-License-Identifier: Apache-2.0 OR MIT
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#
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#
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# Cmake version 3.20 is the minimum version needed for all of Open 3D Engine's supported platforms
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cmake_minimum_required(VERSION 3.20)
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include(cmake/LySet.cmake)
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include(cmake/Version.cmake)
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include(cmake/OutputDirectory.cmake)
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if(NOT PROJECT_NAME)
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include(cmake/CompilerSettings.cmake)
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project(O3DE
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LANGUAGES C CXX
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VERSION ${LY_VERSION_STRING}
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)
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endif()
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################################################################################
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# Initialize
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################################################################################
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include(cmake/GeneralSettings.cmake)
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include(cmake/FileUtil.cmake)
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include(cmake/PAL.cmake)
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include(cmake/PALTools.cmake)
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include(cmake/RuntimeDependencies.cmake)
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include(cmake/Configurations.cmake) # Requires to be after PAL so we get platform variable definitions
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include(cmake/Dependencies.cmake)
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include(cmake/Deployment.cmake)
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include(cmake/3rdParty.cmake)
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include(cmake/LYPython.cmake)
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include(cmake/Install.cmake)
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include(cmake/LYWrappers.cmake)
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include(cmake/Gems.cmake)
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include(cmake/UnitTest.cmake)
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include(cmake/LYTestWrappers.cmake)
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include(cmake/Monolithic.cmake)
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include(cmake/SettingsRegistry.cmake)
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include(cmake/TestImpactFramework/LYTestImpactFramework.cmake)
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include(cmake/CMakeFiles.cmake)
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include(cmake/O3DEJson.cmake)
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################################################################################
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# Subdirectory processing
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################################################################################
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function(add_engine_json_external_subdirectories)
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read_json_external_subdirs(external_subdis ${LY_ROOT_FOLDER}/engine.json)
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foreach(external_subdir ${external_subdis})
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file(REAL_PATH ${external_subdir} real_external_subdir BASE_DIRECTORY ${LY_ROOT_FOLDER})
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list(APPEND engine_external_subdirs ${real_external_subdir})
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endforeach()
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set_property(GLOBAL APPEND PROPERTY LY_EXTERNAL_SUBDIRS ${engine_external_subdirs})
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endfunction()
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# Add the projects first so the Launcher can find them
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include(cmake/Projects.cmake)
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if(NOT INSTALLED_ENGINE)
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# Add the rest of the targets
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add_subdirectory(Assets)
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add_subdirectory(Code)
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add_subdirectory(python)
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add_subdirectory(Registry)
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add_subdirectory(scripts)
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add_subdirectory(Templates)
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add_subdirectory(Tools)
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# Add external subdirectories listed in the engine.json. LY_EXTERNAL_SUBDIRS is a cache variable so the user can add extra
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# external subdirectories
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add_engine_json_external_subdirectories()
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else()
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ly_find_o3de_packages()
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endif()
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get_property(external_subdirs GLOBAL PROPERTY LY_EXTERNAL_SUBDIRS)
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list(APPEND LY_EXTERNAL_SUBDIRS ${external_subdirs})
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# Loop over the additional external subdirectories and invoke add_subdirectory on them
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foreach(external_directory ${LY_EXTERNAL_SUBDIRS})
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# Hash the extenal_directory name and append it to the Binary Directory section of add_subdirectory
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# This is to deal with potential situations where multiple external directories has the same last directory name
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# For example if D:/Company1/RayTracingGem and F:/Company2/Path/RayTracingGem were both added as a subdirectory
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file(REAL_PATH ${external_directory} full_directory_path)
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string(SHA256 full_directory_hash ${full_directory_path})
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# Truncate the full_directory_hash down to 8 characters to avoid hitting the Windows 260 character path limit
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# when the external subdirectory contains relative paths of significant length
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string(SUBSTRING ${full_directory_hash} 0 8 full_directory_hash)
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# Use the last directory as the suffix path to use for the Binary Directory
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get_filename_component(directory_name ${external_directory} NAME)
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add_subdirectory(${external_directory} ${CMAKE_BINARY_DIR}/External/${directory_name}-${full_directory_hash})
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endforeach()
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################################################################################
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# Post-processing
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################################################################################
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# The following steps have to be done after all targets are registered:
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# 1. Add any dependencies registered via ly_enable_gems
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ly_enable_gems_delayed()
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# 2. Defer generation of the StaticModules.inl file which is needed to create the AZ::Module derived class in monolithic
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# builds until after all the targets are known and all the gems are enabled
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ly_delayed_generate_static_modules_inl()
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# 3. generate a settings registry .setreg file for all ly_add_project_dependencies() and ly_add_target_dependencies() calls
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# to provide applications with the filenames of gem modules to load
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# This must be done before ly_delayed_target_link_libraries() as that inserts BUILD_DEPENDENCIES as MANUALLY_ADDED_DEPENDENCIES
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# if the build dependency is a MODULE_LIBRARY. That would cause a false load dependency to be generated
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ly_delayed_generate_settings_registry()
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# 4. link targets where the dependency was yet not declared, we need to have the declaration so we do different
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# linking logic depending on the type of target
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ly_delayed_target_link_libraries()
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# 5. generate a registry file for unit testing for platforms that support unit testing
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if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
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ly_delayed_generate_unit_test_module_registry()
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endif()
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# 5. inject runtime dependencies to the targets. We need to do this after (1) since we are going to walk through
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# the dependencies
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ly_delayed_generate_runtime_dependencies()
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# 6. Perform test impact framework post steps once all of the targets have been enumerated
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ly_test_impact_post_step()
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# 7. Generate the O3DE find file and setup install locations for scripts, tools, assets etc., required by the engine
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if(LY_INSTALL_ENABLED)
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# 8. Generate the O3DE find file and setup install locations for scripts, tools, assets etc., required by the engine
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ly_setup_o3de_install()
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# 9. CPack information (to be included after install)
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include(cmake/Packaging.cmake)
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endif()
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