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CMakeLists.txt
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CMakeLists.txt
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# cmake arguments
# CMAKE_BUILD_TYPE: Compilation target (Debug or Release defaults to Debug)
#
# godot-cpp cmake arguments
# GODOT_HEADERS_DIR: This is where the gdnative include folder is (godot_source/modules/gdnative/include)
# GODOT_CUSTOM_API_FILE: This is if you have another path for the godot_api.json
#
# Android cmake arguments
# CMAKE_TOOLCHAIN_FILE: The path to the android cmake toolchain ($ANDROID_NDK/build/cmake/android.toolchain.cmake)
# ANDROID_NDK: The path to the android ndk root folder
# ANDROID_TOOLCHAIN_NAME: The android toolchain (arm-linux-androideabi-4.9 or aarch64-linux-android-4.9 or x86-4.9 or x86_64-4.9)
# ANDROID_PLATFORM: The android platform version (android-23)
# More info here: https://godot.readthedocs.io/en/latest/development/compiling/compiling_for_android.html
#
# Examples
#
# Builds a debug version:
# cmake .
# cmake --build .
#
# Builds a release version with clang
# CC=/usr/bin/clang CXX=/usr/bin/clang++ cmake -DCMAKE_BUILD_TYPE=Release -G "Unix Makefiles" .
# cmake --build .
#
# Builds an android armeabi-v7a debug version:
# cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_NDK=$ANDROID_NDK \
# -DANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.9 -DANDROID_PLATFORM=android-23 -DCMAKE_BUILD_TYPE=Debug .
# cmake --build .
#
# Protip
# Generate the buildfiles in a sub directory to not clutter the root directory with build files:
# mkdir build && cd build && cmake -G "Unix Makefiles" .. && cmake --build .
#
# Todo
# Test build for Windows, Mac and mingw.
project(godot-cpp LANGUAGES CXX)
cmake_minimum_required(VERSION 3.6)
option(GENERATE_TEMPLATE_GET_NODE "Generate a template version of the Node class's get_node." ON)
set(BUILD_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${BUILD_PATH}")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${BUILD_PATH}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${BUILD_PATH}")
SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${BUILD_PATH}")
SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE "${BUILD_PATH}")
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG "${BUILD_PATH}")
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE "${BUILD_PATH}")
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG "${BUILD_PATH}")
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE "${BUILD_PATH}")
# Default build type is Debug in the SConstruct
if(CMAKE_BUILD_TYPE STREQUAL "")
set(CMAKE_BUILD_TYPE Debug)
endif()
# Set the c++ standard to c++17
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
# Input from user for godot headers and the api file
set(GODOT_HEADERS_DIR "godot-headers" CACHE STRING "")
set(GODOT_CUSTOM_API_FILE "godot-headers/extension_api.json" CACHE STRING "")
set(GODOT_COMPILE_FLAGS )
set(GODOT_LINKER_FLAGS )
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
# using Visual Studio C++
set(GODOT_COMPILE_FLAGS "/EHsc /WX") # /GF /MP
if(CMAKE_BUILD_TYPE MATCHES Debug)
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /MDd") # /Od /RTC1 /Zi
else()
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /MD /O2") # /Oy /GL /Gy
STRING(REGEX REPLACE "/RTC(su|[1su])" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
string(REPLACE "/RTC1" "" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
endif(CMAKE_BUILD_TYPE MATCHES Debug)
# Disable conversion warning, truncation, unreferenced var, signed mismatch, different type
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /wd4244 /wd4305 /wd4101 /wd4018 /wd4267 /wd4099")
# Todo: Check if needed.
add_definitions(-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_WARNINGS)
# Unkomment for warning level 4
#if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
# string(REGEX REPLACE "/W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
#endif()
else()
#elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
# using Clang
#elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
# using GCC and maybe MinGW?
set(GODOT_LINKER_FLAGS "-static-libgcc -static-libstdc++ -Wl,-R,'$$ORIGIN'")
# Hmm.. maybe to strikt?
set(GODOT_COMPILE_FLAGS "-fPIC -g -Wwrite-strings")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wchar-subscripts -Wcomment -Wdisabled-optimization")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wformat -Wformat=2 -Wformat-security -Wformat-y2k")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wimport -Winit-self -Winline -Winvalid-pch")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wmissing-braces -Wmissing-format-attribute")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wmissing-include-dirs -Wmissing-noreturn -Wpacked -Wpointer-arith")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wredundant-decls -Wreturn-type -Wsequence-point")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wswitch -Wswitch-enum -Wtrigraphs")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wuninitialized -Wunknown-pragmas -Wunreachable-code -Wunused-label")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wunused-value -Wvariadic-macros -Wvolatile-register-var -Wno-error=attributes")
# -Wshadow -Wextra -Wall -Weffc++ -Wfloat-equal -Wstack-protector -Wunused-parameter -Wsign-compare -Wunused-variable -Wcast-align
# -Wunused-function -Wstrict-aliasing -Wstrict-aliasing=2 -Wmissing-field-initializers
if(NOT CMAKE_SYSTEM_NAME STREQUAL "Android")
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wno-ignored-attributes")
endif()
if(CMAKE_BUILD_TYPE MATCHES Debug)
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-omit-frame-pointer -O0")
else()
set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -O3")
endif(CMAKE_BUILD_TYPE MATCHES Debug)
endif()
# Generate source from the bindings file
find_package(Python3 3.4 REQUIRED) # pathlib should be present
if(GENERATE_TEMPLATE_GET_NODE)
set(GENERATE_BINDING_PARAMETERS "True")
else()
set(GENERATE_BINDING_PARAMETERS "False")
endif()
execute_process(COMMAND "${Python3_EXECUTABLE}" "-c" "import binding_generator; binding_generator.print_file_list(\"${GODOT_CUSTOM_API_FILE}\", \"${CMAKE_CURRENT_BINARY_DIR}\", headers=True, sources=True)"
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
OUTPUT_VARIABLE GENERATED_FILES_LIST
)
add_custom_command(OUTPUT ${GENERATED_FILES_LIST}
COMMAND "${Python3_EXECUTABLE}" "-c" "import binding_generator; binding_generator.generate_bindings(\"${GODOT_CUSTOM_API_FILE}\", \"${GENERATE_BINDING_PARAMETERS}\", \"${CMAKE_CURRENT_BINARY_DIR}\")"
VERBATIM
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
MAIN_DEPENDENCY ${GODOT_CUSTOM_API_FILE}
DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/binding_generator.py
COMMENT "Generating bindings"
)
# Get Sources
file(GLOB_RECURSE SOURCES src/*.c**)
file(GLOB_RECURSE HEADERS include/*.h**)
# Define our godot-cpp library
add_library(${PROJECT_NAME}
${SOURCES}
${HEADERS}
${GENERATED_FILES_LIST}
)
add_library(godot::cpp ALIAS ${PROJECT_NAME})
target_compile_definitions(${PROJECT_NAME} PUBLIC
$<$<CONFIG:Debug>:DEBUG_ENABLED>
$<$<CONFIG:Debug>:DEBUG_METHODS_ENABLED>
)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
target_compile_definitions(${PROJECT_NAME} PUBLIC TYPED_METHOD_BIND)
endif()
target_include_directories(${PROJECT_NAME} PUBLIC
include
${CMAKE_CURRENT_BINARY_DIR}/gen/include
)
# Put godot headers as SYSTEM PUBLIC to exclude warnings from irrelevant headers
target_include_directories(${PROJECT_NAME}
SYSTEM PUBLIC
${GODOT_HEADERS_DIR}
)
# Add the compile flags
set_property(TARGET ${PROJECT_NAME} APPEND_STRING PROPERTY COMPILE_FLAGS ${GODOT_COMPILE_FLAGS})
set_property(TARGET ${PROJECT_NAME} APPEND_STRING PROPERTY LINK_FLAGS ${GODOT_LINKER_FLAGS})
# Create the correct name (godot.os.build_type.system_bits)
set(BITS 32)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(BITS 64)
endif(CMAKE_SIZEOF_VOID_P EQUAL 8)
string(TOLOWER "${CMAKE_SYSTEM_NAME}" SYSTEM_NAME)
string(TOLOWER "${CMAKE_BUILD_TYPE}" BUILD_TYPE)
if(ANDROID)
# Added the android abi after system name
set(SYSTEM_NAME ${SYSTEM_NAME}.${ANDROID_ABI})
# Android does not have the bits at the end if you look at the main godot repo build
set_property(TARGET ${PROJECT_NAME} PROPERTY OUTPUT_NAME "godot-cpp.${SYSTEM_NAME}.${BUILD_TYPE}")
else()
set_property(TARGET ${PROJECT_NAME} PROPERTY OUTPUT_NAME "godot-cpp.${SYSTEM_NAME}.${BUILD_TYPE}.${BITS}")
endif()