Fixed frameworks compilation

CMakeLists.txt

@@ -141,7 +141,7 @@ else()
 
     # we need a dummy file in order to compile the framework
     set(SFML_SOURCES ${SFML_HEADERS})
-    list(APPEND SFML_SOURCES dummy.cpp)
+    list(APPEND SFML_SOURCES src/dummy.cpp)
 
     # create SFML.framework
     add_library(SFML ${SFML_SOURCES})

src/dummy.cpp

@@ -0,0 +1,28 @@
+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007-2011 Marco Antognini (antognini.marco@gmail.com), 
+//                         Laurent Gomila (laurent.gom@gmail.com), 
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it freely,
+// subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+//    you must not claim that you wrote the original software.
+//    If you use this software in a product, an acknowledgment
+//    in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+//    and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+// This file is intentionally empty. Its only purpose it to be 
+// used to produce a valid SFML.framework (at least one 
+// compilation unit is required) on Mac OS X.