sdl2-image: add package

Package libsdl2-image (SDL_image 2.8.12) using the bundled stb_image
backend, so it depends only on libsdl2. Required by the vice SDL2 UI.

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

libs/sdl2-image/Makefile

@@ -0,0 +1,65 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=sdl2-image
+PKG_VERSION:=2.8.12
+PKG_RELEASE:=1
+
+PKG_SOURCE:=SDL2_image-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/libsdl-org/SDL_image/tar.gz/release-$(PKG_VERSION)?
+PKG_HASH:=26f07b431d09a9fb2cd759268030a1c34de44328d17f2a304f0612703a0d8cab
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/SDL_image-release-$(PKG_VERSION)
+
+PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
+PKG_LICENSE:=Zlib
+PKG_LICENSE_FILES:=LICENSE.txt
+
+CMAKE_INSTALL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+CMAKE_BINARY_SUBDIR:=openwrt-build
+
+CMAKE_OPTIONS += \
+	-DSDL2IMAGE_SAMPLES=OFF \
+	-DSDL2IMAGE_TESTS=OFF \
+	-DSDL2IMAGE_INSTALL=ON \
+	-DSDL2IMAGE_VENDORED=OFF \
+	-DSDL2IMAGE_DEPS_SHARED=OFF \
+	-DSDL2IMAGE_BACKEND_STB=ON \
+	-DSDL2IMAGE_AVIF=OFF \
+	-DSDL2IMAGE_JXL=OFF \
+	-DSDL2IMAGE_TIF=OFF \
+	-DSDL2IMAGE_WEBP=OFF
+
+define Build/InstallDev
+	$(call Build/InstallDev/cmake,$(1))
+ifdef CONFIG_DEBUG
+	$(LN) libSDL2_imaged.so $(1)/usr/lib/libSDL2_image.so
+endif
+endef
+
+define Package/libsdl2-image
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=SDL2 Image
+  URL:=https://www.libsdl.org/
+  DEPENDS:=+libsdl2
+endef
+
+define Package/libsdl2-image/description
+  SDL_image is an image file loading library for SDL2. PNG and JPEG are
+  handled by the bundled stb_image backend, alongside built-in support for
+  BMP, GIF, LBM, PCX, PNM, QOI, SVG, TGA, XCF, XPM and XV.
+endef
+
+define Package/libsdl2-image/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/lib*.so* $(1)/usr/lib/
+ifdef CONFIG_DEBUG
+	$(LN) libSDL2_imaged.so $(1)/usr/lib/libSDL2_image.so
+endif
+endef
+
+$(eval $(call BuildPackage,libsdl2-image))