sdl2: add package

Package SDL2 library with most commonly used audio, video and input
backends.
Tested on KMS/DRM and Wayland with OpenGLES 2.0, but OpenGL or Vulkan
should work just as well.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

diff --git a/libs/sdl2/Makefile b/libs/sdl2/Makefile
new file mode 100644 (file)
index 0000000..1922061
--- /dev/null
+++ b/libs/sdl2/Makefile
@@ -0,0 +1,154 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=sdl2
+PKG_VERSION:=2.30.9
+PKG_RELEASE:=1
+
+PKG_SOURCE:=SDL2-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://www.libsdl.org/release/
+PKG_HASH:=24b574f71c87a763f50704bbb630cbe38298d544a1f890f099a4696b1d6beba4
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/SDL2-$(PKG_VERSION)
+
+PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
+PKG_LICENSE:=BSD-3c
+PKG_LICENSE_FILES:=COPYING LICENSE
+
+CMAKE_INSTALL:=1
+PKG_CONFIG_DEPENDS:=CONFIG_PACKAGE_libsdl2-tests
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+CMAKE_BINARY_SUBDIR:=openwrt-build
+
+CMAKE_OPTIONS += \
+       -DSDL_ALSA=ON \
+       -DSDL_ALSA_SHARED=ON \
+       -DSDL_ARTS=OFF \
+       -DSDL_ARTS_SHARED=OFF \
+       -DSDL_ASAN=OFF \
+       -DSDL_BACKGROUNDING_SIGNAL=OFF \
+       -DSDL_CCACHE=OFF \
+       -DSDL_CLOCK_GETTIME=ON \
+       -DSDL_COCOA=OFF \
+       -DSDL_DBUS=OFF \
+       -DSDL_DIRECTFB=OFF \
+       -DSDL_DIRECTFB_SHARED=OFF \
+       -DSDL_DIRECTX=OFF \
+       -DSDL_DISKAUDIO=OFF \
+       -DSDL_DUMMYAUDIO=ON \
+       -DSDL_DUMMYVIDEO=ON \
+       -DSDL_ESD=OFF \
+       -DSDL_ESD_SHARED=OFF \
+       -DSDL_FOREGROUNDING_SIGNAL=OFF \
+       -DSDL_FUSIONSOUND=OFF \
+       -DSDL_FUSIONSOUND_SHARED=OFF \
+       -DSDL_GCC_ATOMICS=ON \
+       -DSDL_HIDAPI=ON \
+       -DSDL_HIDAPI_JOYSTICK=ON \
+       -DSDL_HIDAPI_LIBUSB=ON \
+       -DSDL_IBUS=OFF \
+       -DSDL_JACK=OFF \
+       -DSDL_JACK_SHARED=OFF \
+       -DSDL_KMSDRM=ON \
+       -DSDL_KMSDRM_SHARED=ON \
+       -DSDL_LASX=OFF \
+       -DSDL_LIBC=ON \
+       -DSDL_LIBICONV=OFF \
+       -DSDL_LIBSAMPLERATE=ON \
+       -DSDL_LIBSAMPLERATE_SHARED=ON \
+       -DSDL_LIBUDEV=ON \
+       -DSDL_LSX=OFF \
+       -DSDL_METAL=OFF \
+       -DSDL_MMX=OFF \
+       -DSDL_NAS=OFF \
+       -DSDL_NAS_SHARED=OFF \
+       -DSDL_OFFSCREEN=ON \
+       -DSDL_OPENGL=ON \
+       -DSDL_OPENGLES=ON \
+       -DSDL_OSS=OFF \
+       -DSDL_PIPEWIRE=OFF \
+       -DSDL_PIPEWIRE_SHARED=OFF \
+       -DSDL_PTHREADS=ON \
+       -DSDL_PTHREADS_SEM=ON \
+       -DSDL_PULSEAUDIO=ON \
+       -DSDL_PULSEAUDIO_SHARED=ON \
+       -DSDL_RENDER_D3D=OFF \
+       -DSDL_RENDER_METAL=OFF \
+       -DSDL_RPATH=OFF \
+       -DSDL_RPI=OFF \
+       -DSDL_SNDIO=OFF \
+       -DSDL_SNDIO_SHARED=OFF \
+       -DSDL_SYSTEM_ICONV=OFF \
+       -DSDL_TESTS=$(if $(CONFIG_PACKAGE_libsdl2-tests),ON,OFF) \
+       -DSDL_INSTALL_TESTS=$(if $(CONFIG_PACKAGE_libsdl2-tests),ON,OFF) \
+       -DSDL_VENDOR_INFO=OFF \
+       -DSDL_VIRTUAL_JOYSTICK=OFF \
+       -DSDL_VIVANTE=OFF \
+       -DSDL_VULKAN=ON \
+       -DSDL_WASAPI=OFF \
+       -DSDL_WAYLAND=ON \
+       -DSDL_WAYLAND_LIBDECOR=OFF \
+       -DSDL_WAYLAND_LIBDECOR_SHARED=OFF \
+       -DSDL_WAYLAND_QT_TOUCH=ON \
+       -DSDL_WAYLAND_SHARED=ON \
+       -DSDL_X11=OFF \
+       -DSDL_X11_SHARED=OFF \
+       -DSDL_X11_XCURSOR=OFF \
+       -DSDL_X11_XDBE=OFF \
+       -DSDL_X11_XFIXES=OFF \
+       -DSDL_X11_XINPUT=OFF \
+       -DSDL_X11_XRANDR=OFF \
+       -DSDL_X11_XSCRNSAVER=OFF \
+       -DSDL_X11_XSHAPE=OFF \
+       -DSDL_XINPUT=OFF
+
+define Package/libsdl2
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=Simple DirectMedia Layer
+  URL:=https://www.libsdl.org
+  DEPENDS:=+libstdcpp +alsa-lib +libudev-zero +pulseaudio +libmesa +libsamplerate +libwayland +wayland-protocols
+endef
+
+define Package/libsdl2/description
+ Simple DirectMedia Layer is a cross-platform development library designed to
+ provide low level access to audio, keyboard, mouse, joystick, and graphics
+ hardware via OpenGL and Direct3D.
+endef
+
+define Build/InstallDev
+       $(call Build/InstallDev/cmake,$(1))
+ifdef CONFIG_DEBUG
+       $(LN) libSDL2d.so $(1)/usr/lib/libSDL2.so
+endif
+endef
+
+define Package/libsdl2/install
+       $(INSTALL_DIR) $(1)/usr/lib
+       $(CP) $(PKG_INSTALL_DIR)/usr/lib/libSDL2*.so* $(1)/usr/lib
+ifdef CONFIG_DEBUG
+       $(LN) libSDL2d.so $(1)/usr/lib/libSDL2.so
+endif
+endef
+
+define Package/libsdl2-tests
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=SDL installed tests
+  URL:=https://www.libsdl.org
+  DEPENDS:=+libsdl2
+endef
+
+define Package/libsdl2-tests/description
+ Various test programs to validate SDL is working correctly, and some benchmarks.
+endef
+
+define Package/libsdl2-tests/install
+       $(INSTALL_DIR) $(1)/usr/libexec/installed-tests
+       $(CP) $(PKG_INSTALL_DIR)/usr/libexec/installed-tests/* $(1)/usr/libexec/installed-tests
+endef
+
+$(eval $(call BuildPackage,libsdl2))
+$(eval $(call BuildPackage,libsdl2-tests))

diff --git a/libs/sdl2/patches/100-fix-segfault-in-Wayland_DestroyWindow.patch b/libs/sdl2/patches/100-fix-segfault-in-Wayland_DestroyWindow.patch
new file mode 100644 (file)
index 0000000..c279e35
--- /dev/null
+++ b/libs/sdl2/patches/100-fix-segfault-in-Wayland_DestroyWindow.patch
@@ -0,0 +1,20 @@
+--- a/src/video/wayland/SDL_waylandwindow.c
++++ b/src/video/wayland/SDL_waylandwindow.c
+@@ -2208,7 +2208,7 @@ void Wayland_DestroyWindow(_THIS, SDL_Wi
+     SDL_VideoData *data = _this->driverdata;
+     SDL_WindowData *wind = window->driverdata;
+ 
+-    if (data) {
++    if (wind) {
+ #ifdef SDL_VIDEO_OPENGL_EGL
+         if (wind->egl_surface) {
+             SDL_EGL_DestroySurface(_this, wind->egl_surface);
+@@ -2256,6 +2256,8 @@ void Wayland_DestroyWindow(_THIS, SDL_Wi
+         wl_surface_destroy(wind->surface);
+ 
+         SDL_free(wind);
++    }
++    if (data) {
+         WAYLAND_wl_display_flush(data->display);
+     }
+     window->driverdata = NULL;