FindSDL: Allow if() to dereference SDL_INCLUDE_DIR for matching
Otherwise the syntax is incorrect when the variable is empty.
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@ -106,7 +106,7 @@ find_library(SDL_LIBRARY_TEMP
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)
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if(NOT SDL_BUILDING_LIBRARY)
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if(NOT ${SDL_INCLUDE_DIR} MATCHES ".framework")
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if(NOT SDL_INCLUDE_DIR MATCHES ".framework")
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# Non-OS X framework versions expect you to also dynamically link to
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# SDLmain. This is mainly for Windows and OS X. Other (Unix) platforms
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# seem to provide SDLmain for compatibility even though they don't
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