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Create CMakeLists.txt
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‎CMakeLists.txt‎

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# oh yes sir, the Linux support is gonna be here soon
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cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
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set(CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING "" FORCE)
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if (APPLE)
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# Secton: UNTESTED
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# NOTE: You will need to pass this as a command line parameter for the Xcode generator -DCMAKE_OSX_ARCHITECTURES=i386
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# Also note only Xcode 9.4.1 and earlier support i386
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set(CMAKE_OSX_ARCHITECTURES i386)
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set(CMAKE_OSX_DEPLOYMENT_TARGET 10.9)
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set(CMAKE_XCODE_ATTRIBUTE_DEBUG_INFORMATION_FORMAT "dwarf-with-dsym")
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endif()
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project(SourceDEFUN)
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# For some reason, checking if CMAKE_BUILD_TYPE is defined is unreliable
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# So simply check if it's empty instead
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if ("${CMAKE_BUILD_TYPE}" STREQUAL "")
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set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type" FORCE)
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endif()
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# Modern VS versions default to C++14 anyway, so make it consistent
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# But in the future we may want so support C++20
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set(CMAKE_CXX_STANDARD 14)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_VISIBILITY_PRESET hidden)
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set_property(GLOBAL PROPERTY USE_FOLDERS ON)
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# This is a way to emulate groups.vgc
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set(BUILD_GROUP "game" CACHE STRING "Build Group")
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# For the CMake GUIs that support a combobox list
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set_property(CACHE BUILD_GROUP PROPERTY STRINGS
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"everything"
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"game"
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"shaders"
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)
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# Which game are we building?
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set(BUILD_GAME "hl2" CACHE STRING "Build Game")
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set_property(
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CACHE BUILD_GAME PROPERTY STRINGS
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"hl2"
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"episodic"
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)
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set(SRCDIR "${CMAKE_CURRENT_LIST_DIR}")
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set(GAMEDIR "${CMAKE_CURRENT_LIST_DIR}/game")
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set(THIRDPARTYDIR "${SRCDIR}/thirdparty")
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# Compile options that are populated and set for each target depending on their type
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set(ADDITIONAL_COMPILE_OPTIONS_EXE)
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set(ADDITIONAL_COMPILE_OPTIONS_DLL)
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set(ADDITIONAL_COMPILE_OPTIONS_LIB)
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# Libraries that are linked to for each target depending on their type
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set(ADDITIONAL_LINK_LIBRARIES_EXE)
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set(ADDITIONAL_LINK_LIBRARIES_DLL)
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# Linker options that are populated and set for each target depending on their type
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set(ADDITIONAL_LINK_OPTIONS_EXE)
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set(ADDITIONAL_LINK_OPTIONS_DLL)
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set(ADDITIONAL_LINK_OPTIONS_LIB)
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# Sources that are added to each target depending on their type
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set(ADDITIONAL_SOURCES_EXE)
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set(ADDITIONAL_SOURCES_DLL)
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set(ADDITIONAL_SOURCES_LIB)
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# Compile definitions that are added to each target depending on their type
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set(ADDITIONAL_COMPILE_DEFINITIONS_EXE)
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set(ADDITIONAL_COMPILE_DEFINITIONS_DLL)
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set(ADDITIONAL_COMPILE_DEFINITIONS_LIB)
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include("_cmake_scripts/pch_skip.cmake")
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include("_cmake_scripts/platform_dirs.cmake")
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include("_cmake_scripts/base.cmake")
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include("_cmake_scripts/video_base.cmake")
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include("_cmake_scripts/postbuild.cmake")
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set(LIBPUBLIC "${SRCDIR}/lib/public${PLATSUBDIR}")
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set(LIBCOMMON "${SRCDIR}/lib/common${PLATSUBDIR}")
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link_directories(
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${LIBPUBLIC}
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${LIBCOMMON}
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)
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include_directories(
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"${SRCDIR}/common"
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"${SRCDIR}/public"
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"${SRCDIR}/public/tier0"
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"${SRCDIR}/public/tier1"
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)
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add_compile_definitions($<$<CONFIG:Debug>:DEBUG> $<$<CONFIG:Debug>:_DEBUG>)
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add_compile_definitions($<$<CONFIG:Release>:NDEBUG>)
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if (${IS_WINDOWS})
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include("_cmake_scripts/windows_base.cmake")
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elseif (${IS_LINUX} OR ${IS_OSX})
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include("_cmake_scripts/posix_base.cmake")
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endif()
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include("_cmake_scripts/groups.cmake")
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# Store all targets in a variable name ( See: https://stackoverflow.com/questions/37434946/how-do-i-iterate-over-all-cmake-targets-programmatically/62311397#62311397 )
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function(get_all_targets var)
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set(targets)
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get_all_targets_recursive(targets ${CMAKE_CURRENT_SOURCE_DIR})
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set(${var} ${targets} PARENT_SCOPE)
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endfunction()
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macro(get_all_targets_recursive targets dir)
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get_property(subdirectories DIRECTORY ${dir} PROPERTY SUBDIRECTORIES)
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foreach(subdir ${subdirectories})
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get_all_targets_recursive(${targets} ${subdir})
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endforeach()
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get_property(current_targets DIRECTORY ${dir} PROPERTY BUILDSYSTEM_TARGETS)
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list(APPEND ${targets} ${current_targets})
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endmacro()
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get_all_targets(ALL_TARGETS)
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# Set of helper functions to add defintions/options/libs for each target in a filtered way
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function(add_compile_definitions_filtered target definitions)
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foreach(additional_definition IN LISTS ${definitions})
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set(SHOULD_EXCLUDE 0)
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# Exclude the compile definition if target defines an exclude list
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foreach(exclude IN LISTS "${target}_exclude_compile_definitions")
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if (${additional_definition} STREQUAL ${exclude})
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set(SHOULD_EXCLUDE 1)
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break()
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endif()
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endforeach()
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if (NOT ${SHOULD_EXCLUDE})
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target_compile_definitions(${target} PRIVATE ${additional_definition})
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endif()
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endforeach()
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endfunction()
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function(add_compile_options_filtered target options)
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foreach(additional_option IN LISTS ${options})
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set(SHOULD_EXCLUDE 0)
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# Exclude the compile options if target defines an exclude list
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foreach(exclude IN LISTS "${target}_exclude_compile_options")
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if (${additional_option} STREQUAL ${exclude})
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set(SHOULD_EXCLUDE 1)
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break()
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endif()
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endforeach()
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if (NOT ${SHOULD_EXCLUDE})
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target_compile_options(${target} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:${additional_option}>")
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endif()
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endforeach()
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endfunction()
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function(add_sources_filtered target sources)
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foreach(additional_source IN LISTS ${sources})
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set(SHOULD_EXCLUDE 0)
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# Exclude the source if target defines an exclude list
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foreach(exclude IN LISTS "${target}_exclude_source")
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if (${additional_source} STREQUAL ${exclude})
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set(SHOULD_EXCLUDE 1)
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break()
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endif()
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endforeach()
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if (NOT ${SHOULD_EXCLUDE})
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target_sources(${target} PRIVATE ${additional_source})
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endif()
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endforeach()
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endfunction()
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function(add_libraries_filtered target libraries)
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foreach(additional_lib IN LISTS ${libraries})
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set(SHOULD_EXCLUDE 0)
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# Exclude the lib if target defines an exclude list
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foreach(exclude IN LISTS "${target}_exclude_lib")
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if (${additional_lib} STREQUAL ${exclude})
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set(SHOULD_EXCLUDE 1)
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break()
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endif()
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endforeach()
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if (NOT ${SHOULD_EXCLUDE})
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get_target_property(libraries ${target} LINK_LIBRARIES)
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# Don't bother adding it if the target already links it manually
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foreach(lib IN LISTS libraries)
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if (${additional_lib} STREQUAL ${lib})
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set(SHOULD_EXCLUDE 1)
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break()
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endif()
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endforeach()
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endif()
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if (NOT ${SHOULD_EXCLUDE})
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target_link_libraries(${target} PRIVATE ${additional_lib})
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endif()
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endforeach()
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endfunction()
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# Iterates over all the targets and add necessary definitions/options/libs
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# This is an incredible hack, but it allows for targets to specify exclude lists
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# This allows us to emulate -$File and such from VPC
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foreach(target ${ALL_TARGETS})
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# Define an empty exclude list if one isn't defined
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if (NOT DEFINED "${target}_exclude_compile_options")
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set("${target}_exclude_compile_options")
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endif()
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# Define an empty exclude list if one isn't defined
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if (NOT DEFINED "${target}_exclude_lib")
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set("${target}_exclude_lib")
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endif()
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# Define an empty exclude list if one isn't defined
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if (NOT DEFINED "${target}_exclude_source")
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set("${target}_exclude_source")
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endif()
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get_target_property(target_type ${target} TYPE)
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if (${target_type} STREQUAL "EXECUTABLE")
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add_compile_options_filtered(${target} ADDITIONAL_COMPILE_OPTIONS_EXE)
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add_libraries_filtered(${target} ADDITIONAL_LINK_LIBRARIES_EXE)
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add_sources_filtered(${target} ADDITIONAL_SOURCES_EXE)
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target_link_options(${target} PRIVATE ${ADDITIONAL_LINK_OPTIONS_EXE})
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target_compile_definitions(${target} PRIVATE MEMOVERRIDE_MODULE=$<TARGET_NAME_IF_EXISTS:${target}>)
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add_compile_definitions_filtered(${target} ADDITIONAL_COMPILE_DEFINITIONS_EXE)
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# Only applies to Linux and OSX
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target_strip_symbols(${target})
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elseif((${target_type} STREQUAL "SHARED_LIBRARY") OR (${target_type} STREQUAL "MODULE_LIBRARY"))
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add_compile_options_filtered(${target} ADDITIONAL_COMPILE_OPTIONS_DLL)
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add_libraries_filtered(${target} ADDITIONAL_LINK_LIBRARIES_DLL)
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add_sources_filtered(${target} ADDITIONAL_SOURCES_DLL)
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target_link_options(${target} PRIVATE ${ADDITIONAL_LINK_OPTIONS_DLL})
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target_compile_definitions(${target} PRIVATE MEMOVERRIDE_MODULE=$<TARGET_NAME_IF_EXISTS:${target}> DLLNAME=$<TARGET_NAME_IF_EXISTS:${target}>)
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add_compile_definitions_filtered(${target} ADDITIONAL_COMPILE_DEFINITIONS_DLL)
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# Only applies to Linux and OSX
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target_strip_symbols(${target})
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elseif(${target_type} STREQUAL "STATIC_LIBRARY")
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add_compile_options_filtered(${target} ADDITIONAL_COMPILE_OPTIONS_LIB)
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add_sources_filtered(${target} ADDITIONAL_SOURCES_LIB)
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target_link_options(${target} PRIVATE ${ADDITIONAL_LINK_OPTIONS_LIB})
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target_compile_definitions(${target} PRIVATE LIBNAME=$<TARGET_NAME_IF_EXISTS:${target}>)
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add_compile_definitions_filtered(${target} ADDITIONAL_COMPILE_DEFINITIONS_LIB)
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endif()
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endforeach()

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