Put copyExF under a package flag

sdl2.cabal

@@ -45,16 +45,23 @@ source-repository head
 flag examples
   description:       Build examples (except opengl-example)
   default:           False
+  manual:            True
 
 flag opengl-example
   description:       Build opengl-example
   default:           False
+  manual:            True
 
 flag no-linear
   description:       Do not depend on 'linear' library
   default:           False
   manual:            True
 
+flag recent-ish
+  description:       Use features from a more recent libsdl2 release.
+  default:           True
+  manual:            False
+
 library
   -- ghc-options: -Wall
 
@@ -120,8 +127,14 @@ library
   extra-libraries:
     SDL2
 
-  pkgconfig-depends:
-    sdl2 >= 2.0.6
+  if flag(recent-ish)
+    cpp-options:
+      -D RECENT_ISH
+    pkgconfig-depends:
+      sdl2 >= 2.0.10
+  else
+    pkgconfig-depends:
+      sdl2 >= 2.0.6
 
   build-depends:
     base >= 4.7 && < 5,

src/SDL/Raw/Video.hs

@@ -1,3 +1,5 @@
+{-# LANGUAGE CPP #-}
+
 module SDL.Raw.Video (
   -- * Display and Window Management
   createWindow,
@@ -106,7 +108,9 @@ module SDL.Raw.Video (
   renderClear,
   renderCopy,
   renderCopyEx,
+#ifdef RECENT_ISH
   renderCopyExF,
+#endif
   renderDrawLine,
   renderDrawLines,
   renderDrawPoint,
@@ -324,7 +328,9 @@ foreign import ccall "SDL.h SDL_QueryTexture" queryTextureFFI :: Texture -> Ptr
 foreign import ccall "SDL.h SDL_RenderClear" renderClearFFI :: Renderer -> IO CInt
 foreign import ccall "SDL.h SDL_RenderCopy" renderCopyFFI :: Renderer -> Texture -> Ptr Rect -> Ptr Rect -> IO CInt
 foreign import ccall "SDL.h SDL_RenderCopyEx" renderCopyExFFI :: Renderer -> Texture -> Ptr Rect -> Ptr Rect -> CDouble -> Ptr Point -> RendererFlip -> IO CInt
+#ifdef RECENT_ISH
 foreign import ccall "SDL.h SDL_RenderCopyExF" renderCopyExFFFI :: Renderer -> Texture -> Ptr Rect -> Ptr FRect -> CDouble -> Ptr FPoint -> RendererFlip -> IO CInt
+#endif
 foreign import ccall "SDL.h SDL_RenderDrawLine" renderDrawLineFFI :: Renderer -> CInt -> CInt -> CInt -> CInt -> IO CInt
 foreign import ccall "SDL.h SDL_RenderDrawLines" renderDrawLinesFFI :: Renderer -> Ptr Point -> CInt -> IO CInt
 foreign import ccall "SDL.h SDL_RenderDrawPoint" renderDrawPointFFI :: Renderer -> CInt -> CInt -> IO CInt
@@ -835,9 +841,11 @@ renderCopyEx :: MonadIO m => Renderer -> Texture -> Ptr Rect -> Ptr Rect -> CDou
 renderCopyEx v1 v2 v3 v4 v5 v6 v7 = liftIO $ renderCopyExFFI v1 v2 v3 v4 v5 v6 v7
 {-# INLINE renderCopyEx #-}
 
+#ifdef RECENT_ISH
 renderCopyExF :: MonadIO m => Renderer -> Texture -> Ptr Rect -> Ptr FRect -> CDouble -> Ptr FPoint -> RendererFlip -> m CInt
 renderCopyExF v1 v2 v3 v4 v5 v6 v7 = liftIO $ renderCopyExFFFI v1 v2 v3 v4 v5 v6 v7
 {-# INLINE renderCopyExF #-}
+#endif
 
 renderDrawLine :: MonadIO m => Renderer -> CInt -> CInt -> CInt -> CInt -> m CInt
 renderDrawLine v1 v2 v3 v4 v5 = liftIO $ renderDrawLineFFI v1 v2 v3 v4 v5

src/SDL/Video/Renderer.hs

@@ -23,7 +23,9 @@ module SDL.Video.Renderer
   , clear
   , copy
   , copyEx
+#ifdef RECENT_ISH
   , copyExF
+#endif
   , drawLine
   , drawLines
   , drawPoint
@@ -765,6 +767,7 @@ copyEx (Renderer r) (Texture t) srcRect dstRect theta center flips =
                       V2 x y -> (if x then Raw.SDL_FLIP_HORIZONTAL else 0) .|.
                                (if y then Raw.SDL_FLIP_VERTICAL else 0))
 
+#ifdef RECENT_ISH
 -- | Copy a portion of the texture to the current rendering target, optionally rotating it by angle around the given center and also flipping it top-bottom and/or left-right.
 copyExF :: MonadIO m
        => Renderer -- ^ The rendering context
@@ -785,6 +788,7 @@ copyExF (Renderer r) (Texture t) srcRect dstRect theta center flips =
                    (case flips of
                       V2 x y -> (if x then Raw.SDL_FLIP_HORIZONTAL else 0) .|.
                                (if y then Raw.SDL_FLIP_VERTICAL else 0))
+#endif
 
 -- | Draw a line on the current rendering target.
 --