File baselibs.conf of Package SDL
libSDL-1_2-0 provides "SDL-<targettype> = <version>" obsoletes "SDL-<targettype> <= <version>" libSDL-devel provides "SDL-devel-<targettype> = <version>" obsoletes "SDL-devel-<targettype> <= <version>" requires -libSDL-<targettype> requires "libSDL-1_2-0-<targettype> = <version>"