CMake: Fix errors building by MinGW

Some libraries are nto updated for MinGW hence build system
needs some exceptions for this compiler.

CMakeLists.txt

@@ -1585,8 +1585,13 @@ elseif(WIN32)
 		if(WITH_SDL)
 			set(SDL ${LIBDIR}/sdl)
 			set(SDL_INCLUDE_DIR ${SDL}/include)
-			set(SDL_LIBRARY SDL2)
 			set(SDL_LIBPATH ${SDL}/lib)
+			# MinGW TODO: Update MinGW to SDL2
+			if(NOT CMAKE_COMPILER_IS_GNUCC)
+				set(SDL_LIBRARY SDL2)
+			else()
+				set(SDL_LIBRARY SDL)
+			endif()
 		endif()
 
 		# Audio IO