87 lines
4.3 KiB
CMake
87 lines
4.3 KiB
CMake
cmake_minimum_required(VERSION 3.24)
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project(smack_a_brother LANGUAGES C CXX)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
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# The simulation must run identically on every platform (desktop and web play together), so floating point is kept
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# strict: no fusing multiplies and adds (GCC and arm64 Clang do by default), no fast-math reordering. The maths
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# library's transcendentals are replaced by src/dmath.h; tools/determinism_check.sh checks it all holds.
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if(MSVC)
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add_compile_options(/fp:precise /fp:contract-)
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else()
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add_compile_options(-ffp-contract=off -fno-fast-math)
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endif()
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE RelWithDebInfo)
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endif()
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# SDL: static, with only the video (OpenGL), audio and gamepad pieces the game uses.
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set(SDL_SHARED OFF CACHE BOOL "" FORCE)
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set(SDL_STATIC ON CACHE BOOL "" FORCE)
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set(SDL_OPENGL ON CACHE BOOL "" FORCE)
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set(SDL_JOYSTICK ON CACHE BOOL "" FORCE)
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set(SDL_HIDAPI ON CACHE BOOL "" FORCE)
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set(SDL_VIRTUAL_JOYSTICK ON CACHE BOOL "" FORCE)
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set(SDL_TEST_LIBRARY OFF CACHE BOOL "" FORCE)
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set(SDL_EXAMPLES OFF CACHE BOOL "" FORCE)
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foreach(OPTION RENDER GPU VULKAN CAMERA HAPTIC HIDAPI_LIBUSB POWER SENSOR DIALOG TRAY OPENGLES OFFSCREEN
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DUMMYVIDEO DISKAUDIO DUMMYAUDIO OSS JACK SNDIO KMSDRM IBUS LIBURING)
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set(SDL_${OPTION} OFF CACHE BOOL "" FORCE)
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endforeach()
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add_subdirectory(external/sdl EXCLUDE_FROM_ALL)
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# simdjson: its single-file build, static, without exceptions.
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add_library(simdjson STATIC external/simdjson/singleheader/simdjson.cpp)
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target_include_directories(simdjson SYSTEM PUBLIC external/simdjson/singleheader)
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target_compile_definitions(simdjson PUBLIC SIMDJSON_EXCEPTIONS=0)
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# Networking: WebRTC data channels between players and a WebSocket to the server. On desktop it's
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# libdatachannel (static, data channels only, no media); in the browser, datachannel-wasm gives the same API over the
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# browser's own WebRTC.
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if(EMSCRIPTEN)
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add_subdirectory(external/datachannel-wasm EXCLUDE_FROM_ALL)
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set(NETWORK_LIBRARY datachannel-wasm)
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else()
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set(NO_MEDIA ON CACHE BOOL "" FORCE)
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set(NO_EXAMPLES ON CACHE BOOL "" FORCE)
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set(NO_TESTS ON CACHE BOOL "" FORCE)
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add_subdirectory(external/libdatachannel EXCLUDE_FROM_ALL)
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set(NETWORK_LIBRARY LibDataChannel::LibDataChannelStatic)
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# The server, which can also be built on its own (see server/CMakeLists.txt).
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add_subdirectory(server)
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endif()
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file(GLOB SOURCES CONFIGURE_DEPENDS src/*.cpp)
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add_executable(smack_a_brother ${SOURCES})
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target_include_directories(smack_a_brother SYSTEM PRIVATE external/stb)
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target_link_libraries(smack_a_brother PRIVATE SDL3::SDL3-static simdjson ${NETWORK_LIBRARY})
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set_target_properties(smack_a_brother PROPERTIES OUTPUT_NAME smack-a-brother)
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file(CREATE_LINK ${CMAKE_SOURCE_DIR}/resources ${CMAKE_BINARY_DIR}/resources SYMBOLIC)
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# Emscripten: RPG_NODE builds a headless copy for node (balance runs and the determinism check), with the resources
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# embedded.
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if(EMSCRIPTEN)
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option(RPG_NODE "Build for node, headless" OFF)
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target_link_options(smack_a_brother PRIVATE -sALLOW_MEMORY_GROWTH=1 -sSTACK_SIZE=1048576)
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if(NOT RPG_NODE)
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# The browser build: WebGL2, the resources preloaded, the prefs folder kept in browser storage, and a page
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# whose canvas fills the window.
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set_target_properties(smack_a_brother PROPERTIES SUFFIX ".html")
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target_link_options(smack_a_brother PRIVATE -sMIN_WEBGL_VERSION=2 -sMAX_WEBGL_VERSION=2 -lidbfs.js
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"--preload-file=${CMAKE_SOURCE_DIR}/resources/gfx@/resources/gfx"
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"--preload-file=${CMAKE_SOURCE_DIR}/resources/font@/resources/font"
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"--preload-file=${CMAKE_SOURCE_DIR}/resources/sfx@/resources/sfx"
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"--shell-file=${CMAKE_SOURCE_DIR}/tools/web_shell.html"
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"--pre-js=${CMAKE_SOURCE_DIR}/tools/web_pre.js")
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endif()
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if(RPG_NODE)
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target_link_options(smack_a_brother PRIVATE -sENVIRONMENT=node -sEXIT_RUNTIME=1
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"--pre-js=${CMAKE_SOURCE_DIR}/tools/node_pre.js"
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"--embed-file=${CMAKE_SOURCE_DIR}/resources/gfx@/resources/gfx"
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"--embed-file=${CMAKE_SOURCE_DIR}/resources/font@/resources/font")
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endif()
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endif()
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