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sdl2-compat: add SDL2 compatibility layer on SDL3

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sdl2-compat implements the SDL2 API on top of SDL3, shipping the
libSDL2-2.0 shared library and SDL2 development files. The package is
named libsdl2-compat and only PROVIDES libsdl2, so existing SDL2
consumers resolve to it without a package name collision while the
single SDL3 build backs both APIs.

https://github.com/libsdl-org/sdl2-compat/releases/tag/release-2.32.70
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle
2026-06-10 00:27:11 +01:00
parent 1b663e7555
commit d32c38a240
1 changed files with 59 additions and 0 deletions
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libs/sdl2-compat/Makefile
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include $(TOPDIR)/rules.mk
PKG_NAME:=sdl2-compat
PKG_VERSION:=2.32.70
PKG_RELEASE:=1
PKG_SOURCE:=sdl2-compat-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=https://github.com/libsdl-org/sdl2-compat/releases/download/release-$(PKG_VERSION)/
PKG_HASH:=998fa62557eb46ffe7e5c3e2c123bc332f7df9d9f593b3ceed88ed1158428a44
PKG_BUILD_DIR:=$(BUILD_DIR)/sdl2-compat-$(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 += \
-DSDL2COMPAT_INSTALL=ON \
-DSDL2COMPAT_INSTALL_TESTS=OFF \
-DSDL2COMPAT_STATIC=OFF \
-DSDL2COMPAT_TESTS=OFF \
-DSDL2COMPAT_X11=OFF
define Package/libsdl2-compat
SECTION:=libs
CATEGORY:=Libraries
TITLE:=SDL2 compatibility layer built on SDL3
URL:=https://www.libsdl.org
DEPENDS:=+libsdl3
PROVIDES:=libsdl2
endef
define Package/libsdl2-compat/description
sdl2-compat is an implementation of the SDL2 API on top of SDL3,
letting SDL2 applications and libraries run against a single SDL3 build.
It ships the libSDL2 shared library and SDL2 development files.
endef
define Build/InstallDev
$(call Build/InstallDev/cmake,$(1))
$(SED) 's|^libdir=.*|libdir=\x24{exec_prefix}/lib|' \
$(1)/usr/lib/pkgconfig/sdl2-compat.pc
$(SED) 's|^includedir=.*|includedir=\x24{prefix}/include|' \
$(1)/usr/lib/pkgconfig/sdl2-compat.pc
endef
define Package/libsdl2-compat/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib/libSDL2*.so* $(1)/usr/lib
endef
$(eval $(call BuildPackage,libsdl2-compat))