* allow telling cmake where to find required fonts in system when user supplies the paths, as suggested by unC0Rr, e.g. -DFONTS_DIRS='/usr/share/fonts/truetype/wqy;/usr/share/fonts/truetype/dejavu'
* the build system will use the paths to lookup fonts and install those not found
* the engine will load the paths into physfs (mountpoint /Fonts) to make the fonts available at runtime
* overriding fonts in packages should be possible again now
find_package(SDL QUIET)
if(NOT SDL_FOUND)
find_package(SDL2 REQUIRED)
set(SDL_INCLUDE_DIR ${SDL2_INCLUDE_DIR})
set(SDL_LIBRARY ${SDL2_LIBRARY})
endif()
if(NOT SDL_VERSION)
#find which version of SDL we have
find_file(sdlversion_h SDL_version.h ${SDL_INCLUDE_DIR})
if(sdlversion_h)
file(STRINGS ${sdlversion_h} sdl_majorversion_tmp REGEX "SDL_MAJOR_VERSION[\t' ']+[0-9]+")
file(STRINGS ${sdlversion_h} sdl_minorversion_tmp REGEX "SDL_MINOR_VERSION[\t' ']+[0-9]+")
file(STRINGS ${sdlversion_h} sdl_patchversion_tmp REGEX "SDL_PATCHLEVEL[\t' ']+[0-9]+")
string(REGEX MATCH "([0-9]+)" sdl_majorversion "${sdl_majorversion_tmp}")
string(REGEX MATCH "([0-9]+)" sdl_minorversion "${sdl_minorversion_tmp}")
string(REGEX MATCH "([0-9]+)" sdl_patchversion "${sdl_patchversion_tmp}")
set(SDL_VERSION "${sdl_majorversion}.${sdl_minorversion}.${sdl_patchversion}")
endif()
endif()
mark_as_advanced(sdlversion_h sdl_majorversion sdl_minorversion sdl_patchversion)