Copying from gitlab

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.18)
+set(NAME "GameOfLifeEditor")
+project(${NAME} CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+if(WIN32)
+	set(IMGUI_BACKEND "imgui_impl_dx11.cpp")  # DirectX 11 for Windows
+elseif(APPLE)
+	set(IMGUI_BACKEND "imgui_impl_metal.mm")  # Metal for macOS
+elseif(UNIX)
+	set(IMGUI_BACKEND "imgui_impl_opengl3.cpp")  # OpenGL for Linux
+endif()
+
+# includes
+include_directories(./includes)
+
+# raylib
+include(FetchContent)
+FetchContent_Declare(
+	raylib
+	GIT_REPOSITORY https://github.com/raysan5/raylib.git
+	GIT_TAG 5.5
+	GIT_SHALLOW 1
+)
+FetchContent_GetProperties(raylib)
+if (NOT raylib_POPULATED)
+	set(FETCHCONTENT_QUIET NO)
+	FetchContent_Populate(raylib)
+	set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
+	set(BUILD_GAMES    OFF CACHE BOOL "" FORCE)
+	add_subdirectory(${raylib_SOURCE_DIR} ${raylib_BINARY_DIR})
+endif()
+
+# imgui
+FetchContent_Declare(
+	imgui
+	GIT_REPOSITORY https://github.com/ocornut/imgui.git
+	GIT_TAG docking
+)
+
+FetchContent_MakeAvailable(imgui)
+
+set(imgui_SOURCE_DIR ${CMAKE_BINARY_DIR}/_deps/imgui-src)
+
+# rlimgui
+FetchContent_Declare(
+	rlImGui
+	GIT_REPOSITORY https://github.com/raylib-extras/rlImGui.git
+	GIT_TAG main
+)
+FetchContent_MakeAvailable(rlImGui)
+set(rlImGui_SOURCE_DIR ${CMAKE_BINARY_DIR}/_deps/rlimgui-src)
+
+
+# nlohmann::json
+FetchContent_Declare(
+	json
+	GIT_REPOSITORY https://github.com/nlohmann/json.git
+	GIT_TAG v3.11.3
+)
+FetchContent_MakeAvailable(json)
+
+include_directories(${imgui_SOURCE_DIR} ${rlImGui_SOURCE_DIR})
+
+set(SRC_CXX_FILES	"./src/main.cpp"
+									"./src/rules.cpp"
+									"./src/world.cpp"
+									"./src/render.cpp"
+									"${rlImGui_SOURCE_DIR}/rlImGui.cpp"
+									"${imgui_SOURCE_DIR}/imgui.cpp"
+									"${imgui_SOURCE_DIR}/imgui_draw.cpp"
+									"${imgui_SOURCE_DIR}/imgui_widgets.cpp"
+									"${imgui_SOURCE_DIR}/imgui_tables.cpp"
+									"${imgui_SOURCE_DIR}/backends/${IMGUI_BACKEND}"
+)
+
+# Setup the example
+add_executable(${NAME} ${SRC_CXX_FILES})
+
+# Link raylib and raylib-cpp
+target_link_libraries(${NAME} PUBLIC raylib nlohmann_json::nlohmann_json)