1 files changed, 5 insertions, 3 deletions

diff --git a/qmake/tools/qmutex_unix.cpp b/qmake/tools/qmutex_unix.cpp
index c861b2d..3eb59cf 100644
--- a/qmake/tools/qmutex_unix.cpp
+++ b/qmake/tools/qmutex_unix.cpp
@@ -22,50 +22,51 @@
 ** licenses may use this file in accordance with the Qt Commercial License
 ** Agreement provided with the Software.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
 **   information about Qt Commercial License Agreements.
 ** See http://www.trolltech.com/qpl/ for QPL licensing information.
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #if defined(QT_THREAD_SUPPORT)
 
 #include "qplatformdefs.h"
 
 typedef pthread_mutex_t     Q_MUTEX_T;
 
 // POSIX threads mutex types
 #if ((defined(PTHREAD_MUTEX_RECURSIVE) && defined(PTHREAD_MUTEX_DEFAULT)) || \
-     defined(Q_OS_FREEBSD)) && !defined(Q_OS_UNIXWARE) && !defined(Q_OS_SOLARIS)
-    // POSIX 1003.1c-1995 - We love this OS
+     defined(Q_OS_FREEBSD)) && !defined(Q_OS_UNIXWARE) && !defined(Q_OS_SOLARIS) && \
+    !defined(Q_OS_MAC)
+// POSIX 1003.1c-1995 - We love this OS
 #  define Q_MUTEX_SET_TYPE(a, b) pthread_mutexattr_settype((a), (b))
 #  if defined(QT_CHECK_RANGE)
 #    define Q_NORMAL_MUTEX_TYPE PTHREAD_MUTEX_ERRORCHECK
 #  else
 #    define Q_NORMAL_MUTEX_TYPE PTHREAD_MUTEX_DEFAULT
 #  endif
 #  define Q_RECURSIVE_MUTEX_TYPE PTHREAD_MUTEX_RECURSIVE
 #elif defined(MUTEX_NONRECURSIVE_NP) && defined(MUTEX_RECURSIVE_NP)
 // POSIX 1003.4a pthreads draft extensions
 #  define Q_MUTEX_SET_TYPE(a, b) pthread_mutexattr_setkind_np((a), (b));
 #  define Q_NORMAL_MUTEX_TYPE MUTEX_NONRECURSIVE_NP
 #  define Q_RECURSIVE_MUTEX_TYPE MUTEX_RECURSIVE_NP
 #else
 // Unknown mutex types - skip them
 #  define Q_MUTEX_SET_TYPE(a, b)
 #  undef  Q_NORMAL_MUTEX_TYPE
 #  undef  Q_RECURSIVE_MUTEX_TYPE
 #endif
 
 #include "qmutex.h"
 #include "qmutex_p.h"
 
 #include <errno.h>
 #include <string.h>
@@ -640,48 +641,49 @@ bool QMutex::tryLock()
 
         void waitForSignal()
         {
             ...
             ...
             ...
 
             while ( ! signalled )
                 waitcondition.wait( locker.mutex() );
 
             ...
             ...
             ...
         }
     };
     \endcode
 
     \sa QMutex, QWaitCondition
 */
 
 /*!
     \fn QMutexLocker::QMutexLocker( QMutex *mutex )
 
     Constructs a QMutexLocker and locks \a mutex. The mutex will be
-    unlocked when the QMutexLocker is destroyed.
+    unlocked when the QMutexLocker is destroyed. If \a mutex is zero,
+    QMutexLocker does nothing.
 
     \sa QMutex::lock()
 */
 
 /*!
     \fn QMutexLocker::~QMutexLocker()
 
     Destroys the QMutexLocker and unlocks the mutex which was locked
     in the constructor.
 
     \sa QMutexLocker::QMutexLocker(), QMutex::unlock()
 */
 
 /*!
     \fn QMutex *QMutexLocker::mutex() const
 
     Returns a pointer to the mutex which was locked in the
     constructor.
 
     \sa QMutexLocker::QMutexLocker()
 */
 
 #endif // QT_THREAD_SUPPORT