Platforms

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How to build Aurore's demo, and an app on Aurore, for each platform. The configure and build commands are those the CI runs (.github/workflows/ci.yaml, where the toolchains are pinned; site.yml for a browser); its artifacts are the demo built for each platform. Getting the toolchains themselves is each SDK's business: the links say where.

An app builds the same way as the demo: its CMakeLists.txt includes library/aurore/library/cmake/commonOption.cmake and toolchain.cmake before project(), then add_subdirectory(library/aurore/library) and links Aurore::aurore (see the README and template/). The platform is chosen with -DAURORE_PLATFORM=… (borealis' -DPLATFORM_…=ON still works, with a deprecation warning), and the packaging (an .nro, a .vpk, a .pkg, an app bundle) is the app's own: the demo's CMakeLists.txt has each one, to copy. porting.md has what an app's code should mind on each.

Every build needs CMake 3.16 or later (3.24 on macOS, iOS and tvOS with SDL2 built from the submodule) and a C++20 compiler. Clone with the submodules (git clone --recursive, or git submodule update --init --recursive).

SDL2 is the submodule library/lib/extern/SDL (2.32.10) on the desktop, Android, iOS and tvOS, and on the Vita without USE_SYSTEM_SDL2. Elsewhere it is the toolchain's: devkitPro's switch-sdl2 on the Switch, PacBrew's SDL 2.0.18 on the PS4, Emscripten's port in a browser, and the SDL in the Docker image of the Vita's OpenGL ES build (2.28.5 with psv/scripts/sdl2/ime.patch in the image the CI pins; psv/scripts now makes one with 2.32.10 and the same patch). Aurore's SDL code builds with all of them.

Linux

On Debian or Ubuntu:

sudo apt install build-essential cmake ninja-build git libdbus-1-dev libxkbcommon-dev \
  libwayland-dev wayland-protocols xorg-dev
cmake -B build -DCMAKE_BUILD_TYPE=Release -DAURORE_PLATFORM=DESKTOP -DAURORE_LIBROMFS=ON
cmake --build build
./build/aurore_demo

-DAURORE_WINDOW=SDL2 builds with SDL2 instead of GLFW; -DAURORE_GRAPHICS=GL2, -DAURORE_GRAPHICS=GLES2 or -DAURORE_GRAPHICS=GLES3 another OpenGL. Without AURORE_LIBROMFS, the resources/ folder is copied next to the program at each build. The presets do the same in fewer words: cmake --preset desktop-glfw (or desktop-sdl), then cmake --build --preset desktop-glfw.

The tests need EGL and Mesa as well (libegl-dev libegl1 libegl-mesa0 libgl1-mesa-dri), then -DAURORE_BUILD_TESTS=ON and ctest --test-dir build (testing.md).

macOS

With Xcode's command-line tools and CMake (Homebrew's, for instance):

cmake -B build -DCMAKE_BUILD_TYPE=Release -DAURORE_PLATFORM=DESKTOP -DBUNDLE_MACOS_APP=ON
make -C build -j$(sysctl -n hw.ncpu)
open build/aurore_demo.app

The build is universal (arm64 and x86_64) and runs from macOS 10.15 (11 on Apple silicon). -DBUNDLE_MACOS_APP=ON makes an .app with the resources inside; without it, a plain program with resources/ next to it. -DAURORE_WINDOW=SDL2 builds with SDL2.

Windows

With MSYS2, in its MINGW64 shell:

pacman -S --needed git mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja mingw-w64-x86_64-cc
cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DAURORE_PLATFORM=DESKTOP \
  -DAURORE_WIN32_TERMINAL=OFF -DAURORE_LIBROMFS=ON -DZLIB_USE_STATIC_LIBS=ON
cmake --build build
./build/aurore_demo.exe

-DAURORE_GRAPHICS=D3D11 draws with Direct3D 11 instead of OpenGL. -DAURORE_WIN32_TERMINAL=OFF makes a program without a console window (ON keeps one, for the logs). The demo links the C and C++ runtimes statically (-static in its CMakeLists.txt): it runs without MSYS2's DLLs. library/cmake/MinGWCross.cmake is a toolchain file for building it from Linux with MinGW-w64 (not built by CI).

Nintendo Switch

With devkitPro: the switch-dev group, and for the OpenGL build switch-glfw, switch-mesa and switch-glm (or switch-sdl2 with -DAURORE_WINDOW=SDL2). The CI uses the devkitpro/devkita64 image.

export DEVKITPRO=/opt/devkitpro
cmake -B build_switch -DCMAKE_BUILD_TYPE=Release -DAURORE_PLATFORM=SWITCH -DAURORE_GRAPHICS=DEKO3D
make -C build_switch aurore_demo.nro -j$(nproc)

build_switch/aurore_demo.nro goes to /switch/ on the SD card, or straight to a console with nxlink -s build_switch/aurore_demo.nro (its logs come back to the terminal). Without -DAURORE_GRAPHICS=DEKO3D, the OpenGL driver. The presets switch-deko3d and switch-gl do the same. The .nro target of the demo's CMakeLists.txt shows how the resources go into its romfs, and why the text and button fonts are left out of it: the system's shared fonts take their place (fonts.md).

PS Vita

With the VitaSDK (VITASDK set in the environment). The CI builds in its Docker images:

# GXM, the Vita's own graphics API
docker run --rm -v $(pwd):/src/ vitasdk/vitasdk sh -c \
  "cd /src && cmake -B build -DAURORE_PLATFORM=PSV -DCMAKE_BUILD_TYPE=Release -DAURORE_GRAPHICS=GXM && cmake --build build"

# OpenGL ES 2 through SDL2 and PVR_PSP2
docker run --rm -v $(pwd):/src/ xfangfang/vitasdk_sdl2_gles2 \
  "cmake -B build -G Ninja -DAURORE_PLATFORM=PSV -DUSE_SYSTEM_SDL2=ON -DCMAKE_BUILD_TYPE=Release && cmake --build build"

The result is build/aurore_demo.vpk, installed with VitaShell. The OpenGL ES build packs what is in psv/module/ (empty in the repository: the PVR_PSP2 .suprx modules go there, psv/scripts/Dockerfile shows where they come from); -DAURORE_VITA_SHARK=ON (GXM) compiles the shaders at run time with SceShaccCg. psv/sce_sys/ holds the LiveArea's pictures. -DAURORE_SIMPLE_HIGHLIGHT=ON draws a plainer focus highlight, lighter for the Vita.

PS4

With the OpenOrbis toolchain (OPENORBIS set), through pacbrew's Docker image, which has its add_self and packaging (Linux only):

docker run --rm -v $(pwd):/src/ xfangfang/pacbrew \
  "cmake -B build -DAURORE_PLATFORM=PS4 -DCMAKE_BUILD_TYPE=Release && make -C build -j$(nproc)"

The result is build/*.pkg; the demo's CMakeLists.txt copies ps4/ (the package's sce_sys) and the resources into build/ps4/, read at /app0/ once installed. -DAURORE_LIBJBC=ON asks for root access (an app that needs it).

Android

The Gradle project in android-project/, on SDL2's Android port:

./build_libromfs_generator.sh
cd android-project && ./gradlew assembleDebug

The APK is in android-project/app/build/outputs/apk/debug/. The page in android-project/ has the SDK and NDK it needs, and how to turn it into an app of your own.

iOS and tvOS

On macOS with Xcode:

./build_libromfs_generator.sh
cmake -B build -G Xcode -DAURORE_PLATFORM=IOS -DPLATFORM=OS64 -DDEPLOYMENT_TARGET=13.0
cmake --build build

The app is build/Debug-iphoneos/aurore_demo.app; the CI zips it unsigned. -DIOS_CODE_SIGN_IDENTITY="Apple Development: …" signs it, -DIOS_GUI_IDENTIFIER=com.example.app sets its bundle identifier (PACKAGE_NAME by default). library/cmake/ios.toolchain.cmake takes the usual options of ios-cmake: -DPLATFORM=SIMULATORARM64 builds for the simulator. -DAURORE_PLATFORM=TVOS builds for the Apple TV (not built by CI). The demo's ios_bundle() call (in its CMakeLists.txt) gives the app its storyboard, icons and Info.plist (demo/ios/).

In a browser

Aurore runs on its SDL2 platform under Emscripten: the window stays at 1280×720 (the page scales the canvas), and aurore_web_button(button, down), exported to the page, presses a controller button, for an on-screen pad or keys SDL does not map. The demo builds for it under emcmake cmake and runs on the website, https://aurore.boreale.dev/demo/ (web/README.md says how); PlayGuard's web simulator is an app's complete example. In short, under emcmake cmake:

• set AURORE_PLATFORM=DESKTOP, AURORE_WINDOW=SDL2, AURORE_GRAPHICS=GLES3 and USE_SYSTEM_SDL2 before including commonOption.cmake, and compile with -pthread -sUSE_SDL=2 -sUSE_ZLIB=1 -fexceptions, SDL2 coming from Emscripten's ports (a SDL2Config.cmake that finds nothing to link);
• package the resources into the page's file system (--preload-file) and set AURORE_RESOURCES_ROOT to where they land;
• run the loop with emscripten_set_main_loop, one mainLoop() per frame, since a browser needs its thread back between frames;
• start the threads with the page (-sPTHREAD_POOL_SIZE), which then needs the cross-origin isolation headers;
• a browser has no system font: give Chinese, Japanese and Korean a font of their own (font/cjk.otf, fonts.md).

Options for every platform

library/cmake/commonOption.cmake lists them all with their defaults. borealis' names (PLATFORM_DESKTOP, USE_GLFW, USE_DEKO3D, USE_LIBROMFS…) still work, with a deprecation warning, and are set as plain variables after commonOption.cmake for an app's own tests (if (PLATFORM_SWITCH)).

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