241 lines
8.9 KiB
CMake
241 lines
8.9 KiB
CMake
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function( godotcpp_options )
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#TODO platform
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#TODO target
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# Input from user for GDExtension interface header and the API JSON file
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set(GODOT_GDEXTENSION_DIR "gdextension" CACHE PATH
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"Path to a custom directory containing GDExtension interface header and API JSON file ( /path/to/gdextension_dir )" )
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set(GODOT_CUSTOM_API_FILE "" CACHE FILEPATH
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"Path to a custom GDExtension API JSON file (takes precedence over `gdextension_dir`) ( /path/to/custom_api_file )")
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#TODO generate_bindings
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option(GODOT_GENERATE_TEMPLATE_GET_NODE
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"Generate a template version of the Node class's get_node. (ON|OFF)" ON)
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#TODO build_library
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set(GODOT_PRECISION "single" CACHE STRING
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"Set the floating-point precision level (single|double)")
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#TODO arch
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#TODO threads
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#TODO compiledb
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#TODO compiledb_file
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#TODO build_profile aka cmake preset
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set(GODOT_USE_HOT_RELOAD "" CACHE BOOL
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"Enable the extra accounting required to support hot reload. (ON|OFF)")
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option(GODOT_DISABLE_EXCEPTIONS "Force disabling exception handling code (ON|OFF)" ON )
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set( GODOT_SYMBOL_VISIBILITY "hidden" CACHE STRING
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"Symbols visibility on GNU platforms. Use 'auto' to apply the default value. (auto|visible|hidden)")
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set_property( CACHE GODOT_SYMBOL_VISIBILITY PROPERTY STRINGS "auto;visible;hidden" )
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#TODO optimize
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#TODO debug_symbols
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#TODO dev_build
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# FIXME These options are not present in SCons, and perhaps should be added there.
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option(GODOT_SYSTEM_HEADERS "Expose headers as SYSTEM." ON)
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option(GODOT_WARNING_AS_ERROR "Treat warnings as errors" OFF)
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# Run options commands on the following to populate cache for all platforms.
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# This type of thing is typically done conditionally
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# But as scons shows all options so shall we.
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#TODO ios_options()
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#TODO linux_options()
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#TODO macos_options()
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#TODO web_options()
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#TODO windows_options()
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endfunction()
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function( godotcpp_generate )
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# Set some helper variables for readability
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set( compiler_is_clang "$<OR:$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:Clang>>" )
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set( compiler_is_gnu "$<CXX_COMPILER_ID:GNU>" )
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set( compiler_is_msvc "$<CXX_COMPILER_ID:MSVC>" )
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# CXX_VISIBILITY_PRESET supported values are: default, hidden, protected, and internal
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# which is inline with the gcc -fvisibility=
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# https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html
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# To match the scons options we need to change the text to match the -fvisibility flag
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# it is probably worth another PR which changes both to use the flag options
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if( ${GODOT_SYMBOL_VISIBILITY} STREQUAL "auto" OR ${GODOT_SYMBOL_VISIBILITY} STREQUAL "visible" )
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set( GODOT_SYMBOL_VISIBILITY "default" )
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endif ()
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# Default build type is Debug in the SConstruct
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if("${CMAKE_BUILD_TYPE}" STREQUAL "")
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set(CMAKE_BUILD_TYPE Debug)
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endif()
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# Hot reload is enabled by default in Debug-builds
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if( GODOT_USE_HOT_RELOAD STREQUAL "" AND NOT CMAKE_BUILD_TYPE STREQUAL "Release")
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set(GODOT_USE_HOT_RELOAD ON)
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endif()
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if(NOT DEFINED BITS)
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set(BITS 32)
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(BITS 64)
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endif(CMAKE_SIZEOF_VOID_P EQUAL 8)
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endif()
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set(GODOT_GDEXTENSION_API_FILE "${GODOT_GDEXTENSION_DIR}/extension_api.json")
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if (NOT "${GODOT_CUSTOM_API_FILE}" STREQUAL "") # User-defined override.
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set(GODOT_GDEXTENSION_API_FILE "${GODOT_CUSTOM_API_FILE}")
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endif()
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if ("${GODOT_PRECISION}" STREQUAL "double")
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add_definitions(-DREAL_T_IS_DOUBLE)
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endif()
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set( GODOT_COMPILE_FLAGS )
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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# using Visual Studio C++
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set(GODOT_COMPILE_FLAGS "/utf-8") # /GF /MP
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if(CMAKE_BUILD_TYPE MATCHES Debug)
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /MDd") # /Od /RTC1 /Zi
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else()
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /MD /O2") # /Oy /GL /Gy
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endif(CMAKE_BUILD_TYPE MATCHES Debug)
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add_definitions(-DNOMINMAX)
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else() # GCC/Clang
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if(CMAKE_BUILD_TYPE MATCHES Debug)
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-omit-frame-pointer -O0 -g")
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else()
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -O3")
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endif(CMAKE_BUILD_TYPE MATCHES Debug)
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endif()
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# Disable exception handling. Godot doesn't use exceptions anywhere, and this
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# saves around 20% of binary size and very significant build time (GH-80513).
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if (GODOT_DISABLE_EXCEPTIONS)
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -D_HAS_EXCEPTIONS=0")
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else()
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-exceptions")
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endif()
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else()
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /EHsc")
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endif()
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endif()
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# Generate source from the bindings file
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find_package(Python3 3.4 REQUIRED) # pathlib should be present
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if(GODOT_GENERATE_TEMPLATE_GET_NODE)
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set(GENERATE_BINDING_PARAMETERS "True")
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else()
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set(GENERATE_BINDING_PARAMETERS "False")
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endif()
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execute_process(COMMAND "${Python3_EXECUTABLE}" "-c" "import binding_generator; binding_generator.print_file_list(\"${GODOT_GDEXTENSION_API_FILE}\", \"${CMAKE_CURRENT_BINARY_DIR}\", headers=True, sources=True)"
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE GENERATED_FILES_LIST
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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add_custom_command(OUTPUT ${GENERATED_FILES_LIST}
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COMMAND "${Python3_EXECUTABLE}" "-c" "import binding_generator; binding_generator.generate_bindings(\"${GODOT_GDEXTENSION_API_FILE}\", \"${GENERATE_BINDING_PARAMETERS}\", \"${BITS}\", \"${GODOT_PRECISION}\", \"${CMAKE_CURRENT_BINARY_DIR}\")"
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VERBATIM
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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MAIN_DEPENDENCY ${GODOT_GDEXTENSION_API_FILE}
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/binding_generator.py
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COMMENT "Generating bindings"
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)
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# Get Sources
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# As this cmake file was added using 'include(godotcpp)' from the root CMakeLists.txt,
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# the ${CMAKE_CURRENT_SOURCE_DIR} is still the root dir.
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file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS src/*.c**)
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file(GLOB_RECURSE HEADERS CONFIGURE_DEPENDS include/*.h**)
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# Define our godot-cpp library
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add_library(${PROJECT_NAME} STATIC
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${SOURCES}
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${HEADERS}
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${GENERATED_FILES_LIST}
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)
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add_library(godot::cpp ALIAS ${PROJECT_NAME})
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include(${PROJECT_SOURCE_DIR}/cmake/common_compiler_flags.cmake)
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target_compile_features(${PROJECT_NAME}
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PRIVATE
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cxx_std_17
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)
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if(GODOT_USE_HOT_RELOAD)
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target_compile_definitions(${PROJECT_NAME} PUBLIC HOT_RELOAD_ENABLED)
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target_compile_options(${PROJECT_NAME} PUBLIC $<${compiler_is_gnu}:-fno-gnu-unique>)
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endif()
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target_compile_definitions(${PROJECT_NAME} PUBLIC
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$<$<CONFIG:Debug>:
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DEBUG_ENABLED
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DEBUG_METHODS_ENABLED
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>
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$<${compiler_is_msvc}:
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TYPED_METHOD_BIND
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>
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)
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target_link_options(${PROJECT_NAME} PRIVATE
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$<$<NOT:${compiler_is_msvc}>:
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-static-libgcc
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-static-libstdc++
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-Wl,-R,'$$ORIGIN'
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>
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)
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# Optionally mark headers as SYSTEM
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set(GODOT_SYSTEM_HEADERS_ATTRIBUTE "")
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if (GODOT_SYSTEM_HEADERS)
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set(GODOT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
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endif ()
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target_include_directories(${PROJECT_NAME} ${GODOT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
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include
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${CMAKE_CURRENT_BINARY_DIR}/gen/include
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${GODOT_GDEXTENSION_DIR}
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)
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# Add the compile flags
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set_property(TARGET ${PROJECT_NAME} APPEND_STRING PROPERTY COMPILE_FLAGS ${GODOT_COMPILE_FLAGS})
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# Create the correct name (godot.os.build_type.system_bits)
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string(TOLOWER "${CMAKE_SYSTEM_NAME}" SYSTEM_NAME)
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string(TOLOWER "${CMAKE_BUILD_TYPE}" BUILD_TYPE)
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if(ANDROID)
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# Added the android abi after system name
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set(SYSTEM_NAME ${SYSTEM_NAME}.${ANDROID_ABI})
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# Android does not have the bits at the end if you look at the main godot repo build
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set(OUTPUT_NAME "godot-cpp.${SYSTEM_NAME}.${BUILD_TYPE}")
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else()
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set(OUTPUT_NAME "godot-cpp.${SYSTEM_NAME}.${BUILD_TYPE}.${BITS}")
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endif()
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set_target_properties(${PROJECT_NAME}
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PROPERTIES
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CXX_EXTENSIONS OFF
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POSITION_INDEPENDENT_CODE ON
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CXX_VISIBILITY_PRESET ${GODOT_SYMBOL_VISIBILITY}
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ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin"
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LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin"
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RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin"
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OUTPUT_NAME "${OUTPUT_NAME}"
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)
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endfunction()
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