Hack to fix the compilation on 10.4. This should actually be covered by...

Hack to fix the compilation on 10.4. This should actually be covered by configure, which complains about missing headers, but doesn't disable this module properly.

modules/video_output/opengllayer.m

@@ -43,6 +43,8 @@
 #import <Cocoa/Cocoa.h>
 #import <OpenGL/OpenGL.h>
 
+#ifdef CALayer
+
 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
    This allows sizes which are not powers of 2 */
 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
@@ -134,6 +136,24 @@ struct vout_sys_t
  *****************************************************************************/
 static int CreateVout( vlc_object_t *p_this )
 {
+    /* This module is Leopard only */
+#ifdef __APPLE__
+    long minorMacVersion;
+    if( Gestalt( gestaltSystemVersionMinor, &minorMacVersion ) == noErr )
+    {
+        if( minorMacVersion < 6 )
+        {
+            msg_Warn( p_vout, "current osx version is 10.%ld, non-suitable for OpenglLayer video output", minorMacVersion );
+            return VLC_ENOOBJ;
+        }
+    }
+    else
+    {
+        msg_Warn( p_vout, "couldn't get OS version" );
+        return VLC_EGENERIC;
+    }
+#endif
+
     vout_thread_t *p_vout = (vout_thread_t *)p_this;
     vout_sys_t *p_sys;
     char * psz;
@@ -515,3 +535,5 @@ static int InitTextures( vout_thread_t *p_vout )
     CGLUnlockContext( glContext );
 }
 @end
+
+#endif