Older gcc does not support #pragma GCC diagnostic inside functions

src/video/x11/SDL_x11sym.h

@@ -186,7 +186,7 @@ SDL_X11_SYM(Bool,XkbSetDetectableAutoRepeat,(Display* a, Bool b, Bool* c),(a,b,c
 #endif
 
 /* XKeycodeToKeysym is a deprecated function */
-#if defined(__GNUC__) || defined(__clang__)
+#if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))) || defined(__clang__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
@@ -195,7 +195,7 @@ SDL_X11_SYM(KeySym,XKeycodeToKeysym,(Display* a,unsigned int b,int c),(a,b,c),re
 #else
 SDL_X11_SYM(KeySym,XKeycodeToKeysym,(Display* a,KeyCode b,int c),(a,b,c),return)
 #endif
-#if defined(__GNUC__) || defined(__clang__)
+#if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif