mirror of
https://github.com/godotengine/godot-cpp.git
synced 2025-12-31 01:48:45 +03:00
594a93f8ac
This is because target_link_options was added in v3.13
So this wouldn't build with cmake v3.12
Likewise in CMAKE_CXX_STANDARD only supports value of 17 starting with
cmake v3.9
So the test wouldn't build properly with cmake v3.6
(cherry picked from commit 5c12bd2287)
217 lines
7.5 KiB
CMake
217 lines
7.5 KiB
CMake
# cmake arguments
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# CMAKE_BUILD_TYPE: Compilation target (Debug or Release defaults to Debug)
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#
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# godot-cpp cmake arguments
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# GODOT_GDEXTENSION_DIR: Path to the directory containing GDExtension interface header and API JSON file
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# GODOT_CPP_SYSTEM_HEADERS Mark the header files as SYSTEM. This may be useful to supress warnings in projects including this one.
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# GODOT_CPP_WARNING_AS_ERROR Treat any warnings as errors
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# GODOT_CUSTOM_API_FILE: Path to a custom GDExtension API JSON file (takes precedence over `gdextension_dir`)
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# FLOAT_PRECISION: Floating-point precision level ("single", "double")
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#
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# Android cmake arguments
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# CMAKE_TOOLCHAIN_FILE: The path to the android cmake toolchain ($ANDROID_NDK/build/cmake/android.toolchain.cmake)
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# ANDROID_NDK: The path to the android ndk root folder
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# ANDROID_TOOLCHAIN_NAME: The android toolchain (arm-linux-androideabi-4.9 or aarch64-linux-android-4.9 or x86-4.9 or x86_64-4.9)
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# ANDROID_PLATFORM: The android platform version (android-23)
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# More info here: https://godot.readthedocs.io/en/latest/development/compiling/compiling_for_android.html
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#
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# Examples
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#
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# Builds a debug version:
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# cmake .
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# cmake --build .
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#
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# Builds a release version with clang
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# CC=/usr/bin/clang CXX=/usr/bin/clang++ cmake -DCMAKE_BUILD_TYPE=Release -G "Unix Makefiles" .
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# cmake --build .
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#
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# Builds an android armeabi-v7a debug version:
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# cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_NDK=$ANDROID_NDK \
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# -DANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.9 -DANDROID_PLATFORM=android-23 -DCMAKE_BUILD_TYPE=Debug .
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# cmake --build .
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#
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# Protip
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# Generate the buildfiles in a sub directory to not clutter the root directory with build files:
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# mkdir build && cd build && cmake -G "Unix Makefiles" .. && cmake --build .
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#
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# Todo
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# Test build for Windows, Mac and mingw.
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cmake_minimum_required(VERSION 3.13)
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project(godot-cpp LANGUAGES CXX)
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option(GENERATE_TEMPLATE_GET_NODE "Generate a template version of the Node class's get_node." ON)
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option(GODOT_CPP_SYSTEM_HEADERS "Expose headers as SYSTEM." ON)
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option(GODOT_CPP_WARNING_AS_ERROR "Treat warnings as errors" OFF)
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# Add path to modules
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list( APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/" )
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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 "$<CXX_COMPILER_ID:MSVC>" )
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# Default build type is Debug in the SConstruct
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if("${CMAKE_BUILD_TYPE}" STREQUAL "")
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set(CMAKE_BUILD_TYPE Debug)
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endif()
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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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# Input from user for GDExtension interface header and the API JSON file
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set(GODOT_GDEXTENSION_DIR "gdextension" CACHE STRING "")
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set(GODOT_CUSTOM_API_FILE "" CACHE STRING "")
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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 "${GODOT_CUSTOM_API_FILE}")
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endif()
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set(FLOAT_PRECISION "single" CACHE STRING "")
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if ("${FLOAT_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 "${GODOT_COMPILE_FLAGS} /MD /O2") # /Oy /GL /Gy
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STRING(REGEX REPLACE "/RTC(su|[1su])" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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string(REPLACE "/RTC1" "" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
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endif(CMAKE_BUILD_TYPE MATCHES Debug)
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add_definitions(-DNOMINMAX)
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else() # GCC/Clang
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if(CMAKE_BUILD_TYPE MATCHES Debug)
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-omit-frame-pointer -O0 -g")
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else()
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set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -O3")
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endif(CMAKE_BUILD_TYPE MATCHES Debug)
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endif()
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# Disable exception handling. Godot doesn't use exceptions anywhere, and this
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# saves around 20% of binary size and very significant build time (GH-80513).
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option(GODOT_DISABLE_EXCEPTIONS OFF "Force disabling exception handling code")
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if (GODOT_DISABLE_EXCEPTIONS)
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if ("${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(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}\", \"${BITS}\", \"${FLOAT_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 ${CMAKE_CURRENT_SOURCE_DIR}/binding_generator.py
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COMMENT "Generating bindings"
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)
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# Get Sources
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file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS src/*.c**)
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file(GLOB_RECURSE HEADERS CONFIGURE_DEPENDS include/*.h**)
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# Define our godot-cpp library
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add_library(${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 ${PROJECT_NAME})
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include(GodotCompilerWarnings)
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target_compile_features(${PROJECT_NAME}
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PRIVATE
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cxx_std_17
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)
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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_CPP_SYSTEM_HEADERS_ATTRIBUTE "")
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if (GODOT_CPP_SYSTEM_HEADERS)
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set(GODOT_CPP_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
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endif ()
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target_include_directories(${PROJECT_NAME} ${GODOT_CPP_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
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include
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${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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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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