add dynamic property mode for qmake

in qmake, the property map is not pre-initialized with the values from
QSettings, as dynamic properties are typically unused, and thus
initializing them would be a waste of time.
consequently, make propertyValue() just a delegate to a QMakeProperty.

Change-Id: I11af5124f810f798214c43704fe49ace03a8f5b8
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

src/shared/proparser/qmakeglobals.cpp

@@ -282,6 +282,7 @@ QString QMakeGlobals::expandEnvVars(const QString &str) const
     return string;
 }
 
+#ifndef QT_BUILD_QMAKE
 #ifdef PROEVALUATOR_INIT_PROPS
 bool QMakeGlobals::initProperties()
 {
@@ -339,5 +340,6 @@ void QMakeGlobals::setProperties(const QHash<QString, QString> &props)
         properties.insert(ProKey(it.key()), ProString(it.value()));
 }
 #endif
+#endif // QT_BUILD_QMAKE
 
 QT_END_NAMESPACE

src/shared/proparser/qmakeglobals.h

@@ -34,6 +34,10 @@
 #include "qmake_global.h"
 #include "proitems.h"
 
+#ifdef QT_BUILD_QMAKE
+#  include <property.h>
+#endif
+
 #include <QHash>
 #include <QStringList>
 #ifndef QT_BOOTSTRAPPED
@@ -117,12 +121,17 @@ public:
     void setCommandLineArguments(const QString &pwd, const QStringList &args);
     void useEnvironment();
     void setDirectories(const QString &input_dir, const QString &output_dir);
+#ifdef QT_BUILD_QMAKE
+    void setQMakeProperty(QMakeProperty *prop) { property = prop; }
+    ProString propertyValue(const ProKey &name) const { return property->value(name); }
+#else
 #  ifdef PROEVALUATOR_INIT_PROPS
     bool initProperties();
 #  else
     void setProperties(const QHash<QString, QString> &props);
 #  endif
     ProString propertyValue(const ProKey &name) const { return properties.value(name); }
+#endif
 
     QString expandEnvVars(const QString &str) const;
 
@@ -134,7 +143,11 @@ private:
 
     QString source_root, build_root;
 
+#ifdef QT_BUILD_QMAKE
+    QMakeProperty *property;
+#else
     QHash<ProKey, ProString> properties;
+#endif
 
 #ifdef PROEVALUATOR_THREAD_SAFE
     QMutex mutex;