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diff --git a/src/lib/buildgraph/executor.h b/src/lib/buildgraph/executor.h
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+/**************************************************************************
+**
+** This file is part of the Qt Build Suite
+**
+** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file.
+** Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**************************************************************************/
+
+#ifndef BUILDGRAPHEXECUTOR_H
+#define BUILDGRAPHEXECUTOR_H
+
+#include "buildgraph.h"
+
+#include <buildgraph/artifact.h>
+#include <Qbs/processoutput.h>
+#include <tools/settings.h>
+#include <tools/scannerpluginmanager.h>
+#include <buildgraph/scanresultcache.h>
+
+#include <QtCore/QObject>
+#include <QtCore/QVariant>
+
+namespace qbs {
+
+class AutoMoc;
+class ExecutorJob;
+class ScanResultCache;
+
+class Executor : public QObject
+{
+    Q_OBJECT
+public:
+    Executor(int maxJobs = 1);
+    ~Executor();
+
+    void build(const QList<BuildProject::Ptr> projectsToBuild, const QStringList &changedFiles, const QStringList &selectedProductNames, QFutureInterface<bool> &futureInterface);
+
+    enum ExecutorState {
+        ExecutorIdle,
+        ExecutorRunning,
+        ExecutorError
+    };
+
+    void setRunOnceAndForgetModeEnabled(bool enabled) { m_runOnceAndForgetMode = enabled; }
+    void setDryRun(bool b);
+    void setKeepGoing(bool b) { m_keepGoing = b; }
+    bool isKeepGoingSet() const { return m_keepGoing; }
+    ExecutorState state() const { return m_state; }
+
+    void setMaximumJobs(int numberOfJobs);
+    int maximumJobs() const;
+
+signals:
+    void error();
+    void finished();
+    void stateChanged(ExecutorState);
+    void progress(int jobsToDo, int jobCount, const QString &description);
+    void newProcessOutput(const Qbs::ProcessOutput &processOutput);
+
+protected slots:
+    void onProcessError(QString errorString);
+    void onProcessSuccess();
+    void resetArtifactsToUntouched();
+
+protected:
+    void prepareBuildGraph(Artifact::BuildState buildState);
+    void prepareBuildGraph_impl(Artifact *artifact, Artifact::BuildState buildState);
+    void updateBuildGraph(Artifact::BuildState buildState);
+    void updateBuildGraph_impl(Artifact *artifact, Artifact::BuildState buildState, QSet<Artifact *> &seenArtifacts);
+    void doOutOfDateCheck();
+    void doOutOfDateCheck(Artifact *root);
+    void doDependencyScanTopDown();
+    void doDependencyScan_impl(Artifact *artifact, QSet<Artifact *> &seenArtifacts);
+    static bool isLeaf(Artifact *artifact);
+    void initLeaves(const QList<Artifact *> &changedArtifacts);
+    void initLeavesTopDown(Artifact *artifact, QSet<Artifact *> &seenArtifacts);
+    bool run(QFutureInterface<bool> &futureInterface);
+    qbs::FileTime timeStamp(Artifact *artifact);
+    bool isOutOfDate(Artifact *artifact, bool &fileExists);
+    bool execute(Artifact *artifact);
+    void finishArtifact(Artifact *artifact);
+    void finish();
+    void setState(ExecutorState);
+    void setError(const QString &errorMessage);
+    void addExecutorJobs(int jobNumber);
+    void removeExecutorJobs(int jobNumber);
+    bool runAutoMoc();
+    void scanFileDependencies(Artifact *processedArtifact);
+    void scanForFileDependencies(ScannerPlugin *scannerPlugin, const QStringList &includePaths, Artifact *processedArtifact, Artifact *inputArtifact);
+    static void resolveScanResultDependencies(const QStringList &includePaths, Artifact *inputArtifact, const ScanResultCache::Result &scanResult,
+                                              const QString &filePathToBeScanned, QSet<QString> *dependencies, QStringList *filePathsToScan);
+    void handleDependencies(Artifact *processedArtifact, Artifact *scannedArtifact, const QSet<QString> &resolvedDependencies);
+    void handleDependency(Artifact *processedArtifact, const QString &dependencyFilePath);
+    void cancelJobs();
+
+private:
+    QScriptEngine *m_scriptEngine;
+    bool m_runOnceAndForgetMode;    // This is true for the command line version.
+    QList<ExecutorJob*> m_availableJobs;
+    QHash<ExecutorJob*, Artifact *> m_processingJobs;
+    ExecutorState m_state;
+    bool m_keepGoing;
+    QList<BuildProject::Ptr> m_projectsToBuild;
+    QList<BuildProduct::Ptr> m_productsToBuild;
+    QList<Artifact *> m_roots;
+    QMap<Artifact *, QHashDummyValue> m_leaves;
+    QHash<Artifact *, qbs::FileTime> m_timeStampCache;
+    ScanResultCache m_scanResultCache;
+    AutoMoc *m_autoMoc;
+
+    friend class ExecutorJob;
+    int m_maximumJobNumber;
+    QFutureInterface<bool> *m_futureInterface; // TODO: its a hack
+};
+
+} // namespace qbs
+
+#endif // BUILDGRAPHEXECUTOR_H