Long live Qt 4.5!

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diff --git a/qmake/generators/win32/msvc_dsp.h b/qmake/generators/win32/msvc_dsp.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the qmake application of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MSVC_DSP_H
+#define MSVC_DSP_H
+
+#include "winmakefile.h"
+
+QT_BEGIN_NAMESPACE
+
+class FolderGroup;
+
+class DspMakefileGenerator : public Win32MakefileGenerator
+{
+    bool init_flag;
+    bool writeDspHeader(QTextStream &);
+    bool writeDspParts(QTextStream &);
+    bool writeFileGroup(QTextStream &t, const QStringList &listNames, const QString &group, const QString &filter);
+    void writeSubFileGroup(QTextStream &t, FolderGroup *folder);
+    bool writeBuildstepForFile(QTextStream &t, const QString &file, const QString &listName);
+    static bool writeDspConfig(QTextStream &t, DspMakefileGenerator *config);
+    static QString writeBuildstepForFileForConfig(const QString &file, const QString &listName, DspMakefileGenerator *config);
+    QString configName(DspMakefileGenerator * config);
+
+    bool writeMakefile(QTextStream &);
+    bool writeProjectMakefile();
+    void writeSubDirs(QTextStream &t);
+    void init();
+
+public:
+    DspMakefileGenerator();
+    ~DspMakefileGenerator();
+
+    bool openOutput(QFile &file, const QString &build) const;
+    bool hasBuiltinCompiler(const QString &filename) const;
+
+protected:
+    virtual bool doDepends() const { return false; } //never necesary
+    virtual void processSources() { filterIncludedFiles("SOURCES"); filterIncludedFiles("GENERATED_SOURCES"); }
+    virtual QString replaceExtraCompilerVariables(const QString &, const QStringList &, const QStringList &);
+    inline QString replaceExtraCompilerVariables(const QString &val, const QString &in, const QString &out)
+    { return MakefileGenerator::replaceExtraCompilerVariables(val, in, out); }
+    virtual bool supportsMetaBuild() { return true; }
+    virtual bool supportsMergedBuilds() { return true; }
+    virtual bool mergeBuildProject(MakefileGenerator *other);
+    virtual void processPrlVariable(const QString &, const QStringList &);
+    virtual bool findLibraries();
+
+    bool usePCH;
+    QString precompH, namePCH,
+            precompObj, precompPch;
+
+    QString platform;
+
+    struct BuildStep {
+        BuildStep() {}
+        BuildStep &operator<<(const BuildStep &other) {
+            deps << other.deps;
+            buildStep += other.buildStep;
+            buildName += other.buildName;
+            buildOutputs += other.buildOutputs;
+            return *this;
+        }
+
+        QStringList deps;
+        QString buildStep;
+        QString buildName;
+        QStringList buildOutputs;
+    };
+    QMap<QString, BuildStep> swappedBuildSteps;
+
+    // Holds all configurations for glue (merged) project
+    QList<DspMakefileGenerator*> mergedProjects;
+};
+
+inline DspMakefileGenerator::~DspMakefileGenerator()
+{ }
+
+inline bool DspMakefileGenerator::findLibraries()
+{ return Win32MakefileGenerator::findLibraries("MSVCDSP_LIBS"); }
+
+QT_END_NAMESPACE
+
+#endif // MSVC_DSP_H