[BUGFIX] Building Sphinx fails on Mac OS X with Xcode 5.1

Change-Id: I4e60772df8e8c77cf61ae0ae43d3406b97ead40f
Resolves: #58424
Reviewed-on: https://review.typo3.org/29778
Reviewed-by: Andreas Beutel
Tested-by: Andreas Beutel
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers