1 find_package(SDL QUIET)

     2 

     3 if(NOT SDL_FOUND)

     4     find_package(SDL2 REQUIRED)

     5     set(SDL_INCLUDE_DIR ${SDL2_INCLUDE_DIR})

     6     set(SDL_LIBRARY ${SDL2_LIBRARY})

     7 endif()

     8 

     9 if(NOT SDL_VERSION)

    10     #find which version of SDL we have

    11     find_file(sdlversion_h SDL_version.h ${SDL_INCLUDE_DIR})

    12     if(sdlversion_h)

    13         file(STRINGS ${sdlversion_h} sdl_majorversion_tmp REGEX "SDL_MAJOR_VERSION[\t' ']+[0-9]+")

    14         file(STRINGS ${sdlversion_h} sdl_minorversion_tmp REGEX "SDL_MINOR_VERSION[\t' ']+[0-9]+")

    15         file(STRINGS ${sdlversion_h} sdl_patchversion_tmp REGEX "SDL_PATCHLEVEL[\t' ']+[0-9]+")

    16         string(REGEX MATCH "([0-9]+)" sdl_majorversion "${sdl_majorversion_tmp}")

    17         string(REGEX MATCH "([0-9]+)" sdl_minorversion "${sdl_minorversion_tmp}")

    18         string(REGEX MATCH "([0-9]+)" sdl_patchversion "${sdl_patchversion_tmp}")

    19         set(SDL_VERSION "${sdl_majorversion}.${sdl_minorversion}.${sdl_patchversion}")

    20     endif()

    21 endif()

    22 

    23 mark_as_advanced(sdlversion_h sdl_majorversion sdl_minorversion sdl_patchversion)

    24