Index: sdl2-config.in
--- sdl2-config.in.orig
+++ sdl2-config.in
@@ -46,10 +46,10 @@ while test $# -gt 0; do
       echo @SDL_VERSION@
       ;;
     --cflags)
-      echo -I@includedir@/SDL2 @SDL_CFLAGS@
+      echo -I@includedir@ -I@includedir@/SDL2 @SDL_CFLAGS@ @X_CFLAGS@
       ;;
 @ENABLE_SHARED_TRUE@    --libs)
-@ENABLE_SHARED_TRUE@      echo -L@libdir@ @SDL_RLD_FLAGS@ @SDL_LIBS@
+@ENABLE_SHARED_TRUE@      echo -L@libdir@ @SDL_RLD_FLAGS@ @SDL_LIBS@ @X_LIBS@
 @ENABLE_SHARED_TRUE@      ;;
 @ENABLE_STATIC_TRUE@@ENABLE_SHARED_TRUE@    --static-libs)
 @ENABLE_STATIC_TRUE@@ENABLE_SHARED_FALSE@    --libs|--static-libs)