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# This is the CMake file used to build GDevelop.

# For more information, see the README.md file.

cmake_minimum_required(VERSION 3.5)

# Add utility functions

include(scripts/CMakeClangUtils.txt) # To add clang-format and clang-tidy support to a target

# Macro for defining an option

macro(gd_set_option var default type docstring)

if(NOT DEFINED ${var})

set(${var} ${default})

endif()

set(${var} ${${var}} CACHE ${type} ${docstring} FORCE)

endmacro()

# Set options

gd_set_option(BUILD_CORE TRUE BOOL "TRUE to build GDevelop Core library")

gd_set_option(BUILD_GDJS TRUE BOOL "TRUE to build GDevelop JS Platform")

gd_set_option(BUILD_EXTENSIONS TRUE BOOL "TRUE to build the extensions")

gd_set_option(BUILD_TESTS TRUE BOOL "TRUE to build the tests")

gd_set_option(USE_SANITIZERS "" STRING "Comma-separated sanitizers to enable for native builds (e.g. \"address,undefined\"). Empty to disable. Ignored when building with Emscripten.")

# Disable deprecated code

set(NO_GUI TRUE CACHE BOOL "" FORCE) # Force disable old GUI related code.

# Setting up installation directory, for Linux (has to be done before "project" command).

if(NOT WIN32)

if(NOT APPLE)

gd_set_option(GD_INSTALL_PREFIX "/opt/gdevelop/" STRING "The directory where GDevelop should be installed")

else()

gd_set_option(GD_INSTALL_PREFIX "." STRING "The directory where GDevelop should be installed")

endif()

# As we embed SFML, prevent it to be installed system-wide

set(CMAKE_INSTALL_PREFIX "${GD_INSTALL_PREFIX}/useless")

endif()

project(GDevelop)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(NOT WIN32 AND NOT APPLE AND NOT BUILD_TESTS)

set(CMAKE_SKIP_BUILD_RPATH TRUE) # Avoid errors when packaging for linux.

endif()

if(APPLE)

set(CMAKE_MACOSX_RPATH 1)

set(CMAKE_INSTALL_RPATH_USE_LINK_PATH FALSE)

set(CMAKE_INSTALL_RPATH ".")

set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)

add_compile_options(

-D_WCHAR_H_CPLUSPLUS_98_CONFORMANCE_

-Wno-potentially-evaluated-expression)

endif()

# Sanity checks

if("${CMAKE_BUILD_TYPE}" STREQUAL "")

message(STATUS "CMAKE_BUILD_TYPE is empty, assuming build type is Release")

set(CMAKE_BUILD_TYPE Release)

endif()

if("${CMAKE_BUILD_TYPE}" STREQUAL "Release" AND NOT WIN32 AND CMAKE_COMPILER_IS_GNUCXX)

set(CMAKE_SHARED_LINKER_FLAGS "-s") # Force stripping to avoid errors when packaging for linux.

endif()

#Activate C++11

set(CMAKE_CXX_STANDARD 11) # Upgrading to C++17 should be tried.

set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Mark some warnings as errors

if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")

# Activate as much warnings as possible to avoid errors like

# uninitialized variables or other hard to debug bugs.

add_compile_options(

-Wall

-Wextra

-Wuninitialized

-Wconditional-uninitialized

-Wno-unknown-warning-option

-Wno-reorder-ctor

-Wno-reorder

-Wno-unused-parameter

-Wno-pessimizing-move

-Wno-unused-variable # Not a good style, but not a risk

-Wno-unused-private-field

-Wno-ignored-qualifiers # Not a risk

-Wno-sign-compare # Not a big risk

# Make as much warnings considered as errors as possible (only one for now).

-Werror=return-stack-address

-Werror=return-type)

endif()

# Sanitizers (ASan/UBSan) for native builds. Use e.g.:

# cmake -DUSE_SANITIZERS="address,undefined" -DCMAKE_BUILD_TYPE=Debug ..

# Then run with:

# ASAN_OPTIONS=detect_leaks=0:abort_on_error=1 ./GDCore_tests

# Some checks (use-after-scope) need at least -O1; the Debug build type's -O0

# still catches use-after-free, heap-buffer-overflow and the UBSan checks.

if(USE_SANITIZERS AND NOT EMSCRIPTEN)

message(STATUS "Enabling sanitizers: ${USE_SANITIZERS}")

add_compile_options(-fsanitize=${USE_SANITIZERS} -fno-omit-frame-pointer -fno-sanitize-recover=all)

# add_link_options requires CMake >= 3.13; append to linker flag vars for wider compatibility.

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=${USE_SANITIZERS}")

set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fsanitize=${USE_SANITIZERS}")

set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -fsanitize=${USE_SANITIZERS}")

endif()

# Define common directories:

set(GD_base_dir ${CMAKE_CURRENT_SOURCE_DIR})

# Add all the CMakeLists:

add_subdirectory(ExtLibs)

if(BUILD_CORE)

add_subdirectory(Core)

endif()

if(BUILD_GDJS)

add_subdirectory(GDJS)

endif()

if(EMSCRIPTEN)

add_subdirectory(GDevelop.js)

endif()

if(BUILD_EXTENSIONS)

add_subdirectory(Extensions)

endif()