diff --git a/src/concurrent/qtconcurrentexception.h b/src/concurrent/qtconcurrentexception.h
index 03dd7ec4986..3ed4ac2cf51 100644
--- a/src/concurrent/qtconcurrentexception.h
+++ b/src/concurrent/qtconcurrentexception.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_QFUTURE
+#if !defined(QT_NO_QFUTURE) || defined(Q_CLANG_QDOC)
 
 #include <QtCore/qexception.h>
 
@@ -52,7 +52,7 @@ QT_BEGIN_NAMESPACE
 namespace QtConcurrent
 {
 
-#ifndef QT_NO_EXCEPTIONS
+#if !defined(QT_NO_EXCEPTIONS) || defined(Q_CLANG_QDOC)
 
 typedef Q_DECL_DEPRECATED QException Exception;
 typedef Q_DECL_DEPRECATED QUnhandledException UnhandledException;
diff --git a/src/concurrent/qtconcurrentfilter.h b/src/concurrent/qtconcurrentfilter.h
index 5f4148091e5..acc794fad8b 100644
--- a/src/concurrent/qtconcurrentfilter.h
+++ b/src/concurrent/qtconcurrentfilter.h
@@ -42,60 +42,13 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 #include <QtConcurrent/qtconcurrentfilterkernel.h>
 #include <QtConcurrent/qtconcurrentfunctionwrappers.h>
 
 QT_BEGIN_NAMESPACE
 
-
-#ifdef Q_QDOC
-
-namespace QtConcurrent {
-
-    QFuture<void> filter(Sequence &sequence, FilterFunction filterFunction);
-
-    template <typename T>
-    QFuture<T> filtered(const Sequence &sequence, FilterFunction filterFunction);
-    template <typename T>
-    QFuture<T> filtered(ConstIterator begin, ConstIterator end, FilterFunction filterFunction);
-
-    template <typename T>
-    QFuture<T> filteredReduced(const Sequence &sequence,
-                               FilterFunction filterFunction,
-                               ReduceFunction reduceFunction,
-                               QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce);
-    template <typename T>
-    QFuture<T> filteredReduced(ConstIterator begin,
-                               ConstIterator end,
-                               FilterFunction filterFunction,
-                               ReduceFunction reduceFunction,
-                               QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce);
-
-    void blockingFilter(Sequence &sequence, FilterFunction filterFunction);
-
-    template <typename Sequence>
-    Sequence blockingFiltered(const Sequence &sequence, FilterFunction filterFunction);
-    template <typename Sequence>
-    Sequence blockingFiltered(ConstIterator begin, ConstIterator end, FilterFunction filterFunction);
-
-    template <typename T>
-    T blockingFilteredReduced(const Sequence &sequence,
-                              FilterFunction filterFunction,
-                              ReduceFunction reduceFunction,
-                              QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce);
-    template <typename T>
-    T blockingFilteredReduced(ConstIterator begin,
-                              ConstIterator end,
-                              FilterFunction filterFunction,
-                              ReduceFunction reduceFunction,
-                              QtConcurrent::ReduceOptions reduceOptions = UnorderedReduce | SequentialReduce);
-
-} // namespace QtConcurrent
-
-#else
-
 namespace QtConcurrent {
 
 //! [QtConcurrent-1]
@@ -123,6 +76,7 @@ QFuture<ResultType> filteredReduced(const Sequence &sequence,
     return startFilteredReduced<ResultType>(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::createFunctionWrapper(reduce), options);
 }
 
+#ifndef Q_CLANG_QDOC
 template <typename Sequence, typename KeepFunctor, typename ReduceFunctor>
 QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filteredReduced(const Sequence &sequence,
                                     KeepFunctor keep,
@@ -135,6 +89,7 @@ QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filtere
              QtPrivate::createFunctionWrapper(reduce),
              options);
 }
+#endif
 
 // filteredReduced() on iterators
 template <typename ResultType, typename Iterator, typename KeepFunctor, typename ReduceFunctor>
@@ -147,6 +102,7 @@ QFuture<ResultType> filteredReduced(Iterator begin,
    return startFilteredReduced<ResultType>(begin, end, QtPrivate::createFunctionWrapper(keep), QtPrivate::createFunctionWrapper(reduce), options);
 }
 
+#ifndef Q_CLANG_QDOC
 template <typename Iterator, typename KeepFunctor, typename ReduceFunctor>
 QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filteredReduced(Iterator begin,
                                     Iterator end,
@@ -160,6 +116,7 @@ QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filtere
             QtPrivate::createFunctionWrapper(reduce),
             options);
 }
+#endif
 
 // filtered() on sequences
 template <typename Sequence, typename KeepFunctor>
@@ -193,6 +150,7 @@ ResultType blockingFilteredReduced(const Sequence &sequence,
         .startBlocking();
 }
 
+#ifndef Q_CLANG_QDOC
 template <typename Sequence, typename KeepFunctor, typename ReduceFunctor>
 typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFilteredReduced(const Sequence &sequence,
                                    KeepFunctor keep,
@@ -205,6 +163,7 @@ typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFiltered
          QtPrivate::createFunctionWrapper(reduce),
          options);
 }
+#endif
 
 // blocking filteredReduced() on iterators
 template <typename ResultType, typename Iterator, typename KeepFunctor, typename ReduceFunctor>
@@ -222,6 +181,7 @@ ResultType blockingFilteredReduced(Iterator begin,
         .startBlocking();
 }
 
+#ifndef Q_CLANG_QDOC
 template <typename Iterator, typename KeepFunctor, typename ReduceFunctor>
 typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFilteredReduced(Iterator begin,
                                    Iterator end,
@@ -236,6 +196,7 @@ typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFiltered
          options)
         .startBlocking();
 }
+#endif
 
 // blocking filtered() on sequences
 template <typename Sequence, typename KeepFunctor>
@@ -256,8 +217,6 @@ OutputSequence blockingFiltered(Iterator begin, Iterator end, KeepFunctor keep)
 
 } // namespace QtConcurrent
 
-#endif // Q_QDOC
-
 QT_END_NAMESPACE
 
 #endif // QT_NO_CONCURRENT
diff --git a/src/concurrent/qtconcurrentfilterkernel.h b/src/concurrent/qtconcurrentfilterkernel.h
index 4500bd4f8ab..4ef5ac0cee4 100644
--- a/src/concurrent/qtconcurrentfilterkernel.h
+++ b/src/concurrent/qtconcurrentfilterkernel.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined (Q_CLANG_QDOC)
 
 #include <QtConcurrent/qtconcurrentiteratekernel.h>
 #include <QtConcurrent/qtconcurrentmapkernel.h>
@@ -51,7 +51,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifndef Q_QDOC
 
 namespace QtConcurrent {
 
@@ -341,7 +340,6 @@ inline ThreadEngineStarter<ResultType> startFilteredReduced(Iterator begin, Iter
 
 } // namespace QtConcurrent
 
-#endif // Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentfunctionwrappers.h b/src/concurrent/qtconcurrentfunctionwrappers.h
index 111933410bc..0f9eb469999 100644
--- a/src/concurrent/qtconcurrentfunctionwrappers.h
+++ b/src/concurrent/qtconcurrentfunctionwrappers.h
@@ -43,13 +43,10 @@
 #include <QtConcurrent/qtconcurrentcompilertest.h>
 #include <QtCore/QStringList>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 QT_BEGIN_NAMESPACE
 
-
-#ifndef Q_QDOC
-
 namespace QtConcurrent {
 
 template <typename T>
@@ -375,7 +372,6 @@ struct MapResultType<QStringList, U(C::*)() const noexcept>
 
 } // namespace QtPrivate.
 
-#endif //Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentiteratekernel.cpp b/src/concurrent/qtconcurrentiteratekernel.cpp
index 52218f794bb..11bdb7e8cd0 100644
--- a/src/concurrent/qtconcurrentiteratekernel.cpp
+++ b/src/concurrent/qtconcurrentiteratekernel.cpp
@@ -43,7 +43,7 @@
 #include "private/qfunctions_p.h"
 
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 QT_BEGIN_NAMESPACE
 
@@ -64,6 +64,54 @@ static double elapsed(qint64 after, qint64 before)
 
 namespace QtConcurrent {
 
+/*!
+  \class QtConcurrent::Median
+  \inmodule QtConcurrent
+  \internal
+ */
+
+/*!
+  \class QtConcurrent::MedianDouble
+  \inmodule QtConcurrent
+  \internal
+ */
+
+/*!
+  \class QtConcurrent::BlockSizeManager
+  \inmodule QtConcurrent
+  \internal
+ */
+
+/*!
+  \class QtConcurrent::BlockSizeManagerV2
+  \inmodule QtConcurrent
+  \internal
+ */
+
+/*!
+  \class QtConcurrent::ResultReporter
+  \inmodule QtConcurrent
+  \internal
+ */
+
+/*! \fn bool QtConcurrent::selectIteration(std::bidirectional_iterator_tag)
+  \internal
+ */
+
+/*! \fn bool QtConcurrent::selectIteration(std::forward_iterator_tag)
+  \internal
+ */
+
+/*! \fn bool QtConcurrent::selectIteration(std::random_access_iterator_tag)
+  \internal
+ */
+
+/*!
+  \class QtConcurrent::IterateKernel
+  \inmodule QtConcurrent
+  \internal
+ */
+
 /*! \internal
 
 */
diff --git a/src/concurrent/qtconcurrentiteratekernel.h b/src/concurrent/qtconcurrentiteratekernel.h
index 082fa9e838a..b5438337765 100644
--- a/src/concurrent/qtconcurrentiteratekernel.h
+++ b/src/concurrent/qtconcurrentiteratekernel.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 #include <QtCore/qatomic.h>
 #include <QtConcurrent/qtconcurrentmedian.h>
@@ -53,7 +53,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifndef Q_QDOC
 
 namespace QtConcurrent {
 
@@ -323,7 +322,6 @@ public:
 
 } // namespace QtConcurrent
 
-#endif //Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentmap.cpp b/src/concurrent/qtconcurrentmap.cpp
index 9c01b656111..a8f1d6496e0 100644
--- a/src/concurrent/qtconcurrentmap.cpp
+++ b/src/concurrent/qtconcurrentmap.cpp
@@ -386,8 +386,8 @@
 /*!
   \fn template <typename OutputSequence, typename InputSequence, typename MapFunctor> OutputSequence QtConcurrent::blockingMapped(const InputSequence &sequence, MapFunctor function)
 
-  Calls \a function once for each item in \a sequence and returns a Sequence containing
-  the results. The type of the results will match the type returned my the MapFunction.
+  Calls \a function once for each item in \a sequence and returns an OutputSequence containing
+  the results. The type of the results will match the type returned my the MapFunctor.
 
   \note This function will block until all items in the sequence have been processed.
 
@@ -441,3 +441,39 @@
 
   \sa blockingMappedReduced(), {Concurrent Map and Map-Reduce}
 */
+
+/*!
+  \class QtConcurrent::FunctionWrapper0
+  \inmodule QtConcurrent
+  \internal
+*/
+
+/*!
+  \class QtConcurrent::FunctionWrapper1
+  \inmodule QtConcurrent
+  \internal
+*/
+
+/*!
+  \class QtConcurrent::FunctionWrapper2
+  \inmodule QtConcurrent
+  \internal
+*/
+
+/*!
+  \class QtConcurrent::MemberFunctionWrapper
+  \inmodule QtConcurrent
+  \internal
+*/
+
+/*!
+  \class QtConcurrent::MemberFunctionWrapper1
+  \inmodule QtConcurrent
+  \internal
+*/
+
+/*!
+  \class QtConcurrent::ConstMemberFunctionWrapper
+  \inmodule QtConcurrent
+  \internal
+*/
diff --git a/src/concurrent/qtconcurrentmap.h b/src/concurrent/qtconcurrentmap.h
index f8acf31f1d5..ed1f7cedd14 100644
--- a/src/concurrent/qtconcurrentmap.h
+++ b/src/concurrent/qtconcurrentmap.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 #include <QtConcurrent/qtconcurrentmapkernel.h>
 #include <QtConcurrent/qtconcurrentreducekernel.h>
@@ -52,53 +52,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifdef Q_QDOC
-
-namespace QtConcurrent {
-
-    QFuture<void> map(Sequence &sequence, MapFunction function);
-    QFuture<void> map(Iterator begin, Iterator end, MapFunction function);
-
-    template <typename T>
-    QFuture<T> mapped(const Sequence &sequence, MapFunction function);
-    template <typename T>
-    QFuture<T> mapped(ConstIterator begin, ConstIterator end, MapFunction function);
-
-    template <typename T>
-    QFuture<T> mappedReduced(const Sequence &sequence,
-                             MapFunction function,
-                             ReduceFunction function,
-                             QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
-    template <typename T>
-    QFuture<T> mappedReduced(ConstIterator begin,
-                             ConstIterator end,
-                             MapFunction function,
-                             ReduceFunction function,
-                             QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
-
-    void blockingMap(Sequence &sequence, MapFunction function);
-    void blockingMap(Iterator begin, Iterator end, MapFunction function);
-
-    template <typename T>
-    T blockingMapped(const Sequence &sequence, MapFunction function);
-    template <typename T>
-    T blockingMapped(ConstIterator begin, ConstIterator end, MapFunction function);
-
-    template <typename T>
-    T blockingMappedReduced(const Sequence &sequence,
-                            MapFunction function,
-                            ReduceFunction function,
-                            QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
-    template <typename T>
-    T blockingMappedReduced(ConstIterator begin,
-                            ConstIterator end,
-                            MapFunction function,
-                            ReduceFunction function,
-                            QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
-
-} // namespace QtConcurrent
-
-#else
 
 namespace QtConcurrent {
 
@@ -306,7 +259,6 @@ typename QtPrivate::MapResultType<Iterator, MapFunctor>::ResultType blockingMapp
 
 } // namespace QtConcurrent
 
-#endif // Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentmapkernel.h b/src/concurrent/qtconcurrentmapkernel.h
index 26e755c819b..e8df6687911 100644
--- a/src/concurrent/qtconcurrentmapkernel.h
+++ b/src/concurrent/qtconcurrentmapkernel.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined (Q_CLANG_QDOC)
 
 #include <QtConcurrent/qtconcurrentiteratekernel.h>
 #include <QtConcurrent/qtconcurrentreducekernel.h>
@@ -50,7 +50,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifndef Q_QDOC
 namespace QtConcurrent {
 
 // map kernel, works with both parallel-for and parallel-while
@@ -264,7 +263,6 @@ inline ThreadEngineStarter<ResultType> startMappedReduced(Iterator begin, Iterat
 
 } // namespace QtConcurrent
 
-#endif //Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentmedian.h b/src/concurrent/qtconcurrentmedian.h
index d0f832812cb..87e6b2935df 100644
--- a/src/concurrent/qtconcurrentmedian.h
+++ b/src/concurrent/qtconcurrentmedian.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) ||defined(Q_CLANG_QDOC)
 
 #include <QtCore/qvector.h>
 
@@ -51,7 +51,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifndef Q_QDOC
 
 namespace QtConcurrent {
 
@@ -195,7 +194,6 @@ private:
 
 } // namespace QtConcurrent
 
-#endif //Q_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentreducekernel.h b/src/concurrent/qtconcurrentreducekernel.h
index c5003a2a0ee..d1a283eb539 100644
--- a/src/concurrent/qtconcurrentreducekernel.h
+++ b/src/concurrent/qtconcurrentreducekernel.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 #include <QtCore/qatomic.h>
 #include <QtCore/qlist.h>
@@ -57,8 +57,6 @@ QT_BEGIN_NAMESPACE
 
 namespace QtConcurrent {
 
-#ifndef Q_QDOC
-
 /*
     The ReduceQueueStartLimit and ReduceQueueThrottleLimit constants
     limit the reduce queue size for MapReduce. When the number of
@@ -66,10 +64,17 @@ namespace QtConcurrent {
     MapReduce won't start any new threads, and when it exceeds
     ReduceQueueThrottleLimit running threads will be stopped.
 */
+#ifdef Q_CLANG_QDOC
+enum ReduceQueueLimits {
+    ReduceQueueStartLimit = 20,
+    ReduceQueueThrottleLimit = 30
+};
+#else
 enum {
     ReduceQueueStartLimit = 20,
     ReduceQueueThrottleLimit = 30
 };
+#endif
 
 // IntermediateResults holds a block of intermediate results from a
 // map or filter functor. The begin/end offsets indicates the origin
@@ -82,8 +87,6 @@ public:
     QVector<T> vector;
 };
 
-#endif // Q_QDOC
-
 enum ReduceOption {
     UnorderedReduce = 0x1,
     OrderedReduce = 0x2,
@@ -91,10 +94,9 @@ enum ReduceOption {
     // ParallelReduce = 0x8
 };
 Q_DECLARE_FLAGS(ReduceOptions, ReduceOption)
+#ifndef Q_CLANG_QDOC
 Q_DECLARE_OPERATORS_FOR_FLAGS(ReduceOptions)
-
-#ifndef Q_QDOC
-
+#endif
 // supports both ordered and out-of-order reduction
 template <typename ReduceFunctor, typename ReduceResultType, typename T>
 class ReduceKernel
@@ -239,8 +241,6 @@ struct SequenceHolder2 : public Base
     }
 };
 
-#endif //Q_QDOC
-
 } // namespace QtConcurrent
 
 QT_END_NAMESPACE
diff --git a/src/concurrent/qtconcurrentrun.cpp b/src/concurrent/qtconcurrentrun.cpp
index 1d8f7afe85a..e2e3b3f3af8 100644
--- a/src/concurrent/qtconcurrentrun.cpp
+++ b/src/concurrent/qtconcurrentrun.cpp
@@ -114,6 +114,15 @@
     \snippet code/src_concurrent_qtconcurrentrun.cpp 6
 */
 
+/*!
+  \typedef Function
+  \internal
+
+  This typedef is a dummy required to make the \c Function
+  type name known so that clang doesn't reject functions
+  that use it.
+*/
+
 /*!
     \fn QFuture<T> QtConcurrent::run(Function function, ...);
 
diff --git a/src/concurrent/qtconcurrentrun.h b/src/concurrent/qtconcurrentrun.h
index c0c0e66913a..7963294ebf0 100644
--- a/src/concurrent/qtconcurrentrun.h
+++ b/src/concurrent/qtconcurrentrun.h
@@ -43,15 +43,16 @@
 
 #include <QtConcurrent/qtconcurrentcompilertest.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 #include <QtConcurrent/qtconcurrentrunbase.h>
 #include <QtConcurrent/qtconcurrentstoredfunctioncall.h>
 
 QT_BEGIN_NAMESPACE
 
+#ifdef Q_CLANG_QDOC
 
-#ifdef Q_QDOC
+typedef int Function;
 
 namespace QtConcurrent {
 
@@ -919,7 +920,7 @@ QFuture<T> run(QThreadPool *pool, const Class *object, T (Class::*fn)(Param1, Pa
 
 } //namespace QtConcurrent
 
-#endif // Q_QDOC
+#endif // Q_CLANG_QDOC
 
 QT_END_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentthreadengine.cpp b/src/concurrent/qtconcurrentthreadengine.cpp
index 2e27e0e83ca..8d6bd0efb2a 100644
--- a/src/concurrent/qtconcurrentthreadengine.cpp
+++ b/src/concurrent/qtconcurrentthreadengine.cpp
@@ -39,7 +39,7 @@
 
 #include "qtconcurrentthreadengine.h"
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
 
 QT_BEGIN_NAMESPACE
 
diff --git a/src/concurrent/qtconcurrentthreadengine.h b/src/concurrent/qtconcurrentthreadengine.h
index 0941f559f27..69e42018e66 100644
--- a/src/concurrent/qtconcurrentthreadengine.h
+++ b/src/concurrent/qtconcurrentthreadengine.h
@@ -42,7 +42,7 @@
 
 #include <QtConcurrent/qtconcurrent_global.h>
 
-#ifndef QT_NO_CONCURRENT
+#if !defined(QT_NO_CONCURRENT) ||defined(Q_CLANG_QDOC)
 
 #include <QtCore/qthreadpool.h>
 #include <QtCore/qfuture.h>
@@ -55,8 +55,6 @@
 QT_BEGIN_NAMESPACE
 
 
-#ifndef Q_QDOC
-
 namespace QtConcurrent {
 
 // The ThreadEngineBarrier counts worker threads, and allows one
@@ -268,7 +266,6 @@ inline ThreadEngineStarter<typename ThreadEngine::ResultType> startThreadEngine(
 
 } // namespace QtConcurrent
 
-#endif //Q_QDOC
 
 QT_END_NAMESPACE