-fvisibility=hidden is no longer a requirement for dynamic X11.

We don't clash with Xlib symbols anymore.

--HG--
extra : rebase_source : 0efa50cb3e047dbfb0bdf0fd804a86c819305b83

cmake/sdlchecks.cmake

@@ -331,15 +331,8 @@ macro(CheckX11)
       set(SOURCE_FILES ${SOURCE_FILES} ${X11_SOURCES})
       set(SDL_VIDEO_DRIVER_X11 1)
 
-      if(HAVE_GCC_FVISIBILITY)
-        set(X11_SYMBOLS_PRIVATE TRUE)
-      else()
-        set(X11_SYMBOLS_PRIVATE FALSE)
-      endif(HAVE_GCC_FVISIBILITY)
-
       if(APPLE)
         set(X11_SHARED OFF)
-        set(X11_SYMBOLS_PRIVATE TRUE)
       endif(APPLE)
 
       check_function_exists("shmat" HAVE_SHMAT)
@@ -358,10 +351,6 @@ macro(CheckX11)
         if(NOT HAVE_DLOPEN)
           message_warn("You must have SDL_LoadObject() support for dynamic X11 loading")
           set(HAVE_X11_SHARED FALSE)
-          if(X11_SYMBOLS_PRIVATE)
-            message_warn("You must have gcc4 (-fvisibility=hidden) for dynamic X11 loading")
-            set(HAVE_X11_SHARED TRUE)
-          endif(X11_SYMBOLS_PRIVATE)
         else(NOT HAVE_DLOPEN)
           set(HAVE_X11_SHARED TRUE)
         endif()