diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index de934de..cb02b1e 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -236,40 +236,50 @@ $(obj)/.tmp_qtcheck: $(src)/Makefile
 # QT needs some extra effort...
 $(obj)/.tmp_qtcheck:
 	@set -e; echo "  CHECK   qt"; dir=""; pkg=""; \
-	pkg-config --exists qt 2> /dev/null && pkg=qt; \
-	pkg-config --exists qt-mt 2> /dev/null && pkg=qt-mt; \
-	if [ -n "$$pkg" ]; then \
-	  cflags="\$$(shell pkg-config $$pkg --cflags)"; \
-	  libs="\$$(shell pkg-config $$pkg --libs)"; \
-	  moc="\$$(shell pkg-config $$pkg --variable=prefix)/bin/moc"; \
-	  dir="$$(pkg-config $$pkg --variable=prefix)"; \
+	if ! pkg-config --exists QtCore 2> /dev/null; then \
+	    echo "* Unable to find the QT4 tool qmake. Trying to use QT3"; \
+	    pkg-config --exists qt 2> /dev/null && pkg=qt; \
+	    pkg-config --exists qt-mt 2> /dev/null && pkg=qt-mt; \
+	    if [ -n "$$pkg" ]; then \
+	      cflags="\$$(shell pkg-config $$pkg --cflags)"; \
+	      libs="\$$(shell pkg-config $$pkg --libs)"; \
+	      moc="\$$(shell pkg-config $$pkg --variable=prefix)/bin/moc"; \
+	      dir="$$(pkg-config $$pkg --variable=prefix)"; \
+	    else \
+	      for d in $$QTDIR /usr/share/qt* /usr/lib/qt*; do \
+	        if [ -f $$d/include/qconfig.h ]; then dir=$$d; break; fi; \
+	      done; \
+	      if [ -z "$$dir" ]; then \
+	        echo "*"; \
+	        echo "* Unable to find any QT installation. Please make sure that"; \
+	        echo "* the QT4 or QT3 development package is correctly installed and"; \
+	        echo "* either qmake can be found or install pkg-config or set"; \
+	        echo "* the QTDIR environment variable to the correct location."; \
+	        echo "*"; \
+	        false; \
+	      fi; \
+	      libpath=$$dir/lib; lib=qt; osdir=""; \
+	      $(HOSTCXX) -print-multi-os-directory > /dev/null 2>&1 && \
+	        osdir=x$$($(HOSTCXX) -print-multi-os-directory); \
+	      test -d $$libpath/$$osdir && libpath=$$libpath/$$osdir; \
+	      test -f $$libpath/libqt-mt.so && lib=qt-mt; \
+	      cflags="-I$$dir/include"; \
+	      libs="-L$$libpath -Wl,-rpath,$$libpath -l$$lib"; \
+	      moc="$$dir/bin/moc"; \
+	    fi; \
+	    if [ ! -x $$dir/bin/moc -a -x /usr/bin/moc ]; then \
+	      echo "*"; \
+	      echo "* Unable to find $$dir/bin/moc, using /usr/bin/moc instead."; \
+	      echo "*"; \
+	      moc="/usr/bin/moc"; \
+	    fi; \
 	else \
-	  for d in $$QTDIR /usr/share/qt* /usr/lib/qt*; do \
-	    if [ -f $$d/include/qconfig.h ]; then dir=$$d; break; fi; \
-	  done; \
-	  if [ -z "$$dir" ]; then \
-	    echo "*"; \
-	    echo "* Unable to find the QT3 installation. Please make sure that"; \
-	    echo "* the QT3 development package is correctly installed and"; \
-	    echo "* either install pkg-config or set the QTDIR environment"; \
-	    echo "* variable to the correct location."; \
-	    echo "*"; \
-	    false; \
-	  fi; \
-	  libpath=$$dir/lib; lib=qt; osdir=""; \
-	  $(HOSTCXX) -print-multi-os-directory > /dev/null 2>&1 && \
-	    osdir=x$$($(HOSTCXX) -print-multi-os-directory); \
-	  test -d $$libpath/$$osdir && libpath=$$libpath/$$osdir; \
-	  test -f $$libpath/libqt-mt.so && lib=qt-mt; \
-	  cflags="-I$$dir/include"; \
-	  libs="-L$$libpath -Wl,-rpath,$$libpath -l$$lib"; \
-	  moc="$$dir/bin/moc"; \
-	fi; \
-	if [ ! -x $$dir/bin/moc -a -x /usr/bin/moc ]; then \
-	  echo "*"; \
-	  echo "* Unable to find $$dir/bin/moc, using /usr/bin/moc instead."; \
-	  echo "*"; \
-	  moc="/usr/bin/moc"; \
+	  headerpath="\$$(shell qmake -query QT_INSTALL_HEADERS)"; \
+	  libpath="\$$(shell qmake -query QT_INSTALL_LIBS)"; \
+	  binpath="\$$(shell qmake -query QT_INSTALL_BINS)"; \
+	  cflags="-I$$headerpath -I$$headerpath/QtCore -I$$headerpath/QtGui -I$$headerpath/Qt3Support -DQT3_SUPPORT"; \
+	  libs="-L$$libpath -Wl,-rpath,$$libpath -lQtCore -lQtGui -lQt3Support"; \
+	  moc="$$binpath/moc"; \
 	fi; \
 	echo "KC_QT_CFLAGS=$$cflags" > $@; \
 	echo "KC_QT_LIBS=$$libs" >> $@; \
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 820df2d..88d3874 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -3,25 +3,42 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 
-#include <qapplication.h>
+#include <qglobal.h>
+
+#if QT_VERSION < 0x040000
 #include <qmainwindow.h>
+#include <qvbox.h>
+#include <qvaluelist.h>
+#include <qtextbrowser.h>
+#include <qaction.h>
+#include <qheader.h>
+#include <qfiledialog.h>
+#include <qdragobject.h>
+#include <qpopupmenu.h>
+#else
+#include <q3mainwindow.h>
+#include <q3vbox.h>
+#include <q3valuelist.h>
+#include <q3textbrowser.h>
+#include <q3action.h>
+#include <q3header.h>
+#include <q3filedialog.h>
+#include <q3dragobject.h>
+#include <q3popupmenu.h>
+#endif
+
+#include <qapplication.h>
 #include <qdesktopwidget.h>
 #include <qtoolbar.h>
 #include <qlayout.h>
-#include <qvbox.h>
 #include <qsplitter.h>
-#include <qlistview.h>
-#include <qtextbrowser.h>
 #include <qlineedit.h>
 #include <qlabel.h>
 #include <qpushbutton.h>
 #include <qmenubar.h>
 #include <qmessagebox.h>
-#include <qaction.h>
-#include <qheader.h>
-#include <qfiledialog.h>
-#include <qdragobject.h>
 #include <qregexp.h>
+#include <qevent.h>
 
 #include <stdlib.h>
 
@@ -39,7 +56,7 @@
 static QApplication *configApp;
 static ConfigSettings *configSettings;
 
-QAction *ConfigMainWindow::saveAction;
+Q3Action *ConfigMainWindow::saveAction;
 
 static inline QString qgettext(const char* str)
 {
@@ -54,9 +71,9 @@ static inline QString qgettext(const QString& str)
 /**
  * Reads a list of integer values from the application settings.
  */
-QValueList<int> ConfigSettings::readSizes(const QString& key, bool *ok)
+Q3ValueList<int> ConfigSettings::readSizes(const QString& key, bool *ok)
 {
-	QValueList<int> result;
+	Q3ValueList<int> result;
 	QStringList entryList = readListEntry(key, ok);
 	QStringList::Iterator it;
 
@@ -69,10 +86,10 @@ QValueList<int> ConfigSettings::readSizes(const QString& key, bool *ok)
 /**
  * Writes a list of integer values to the application settings.
  */
-bool ConfigSettings::writeSizes(const QString& key, const QValueList<int>& value)
+bool ConfigSettings::writeSizes(const QString& key, const Q3ValueList<int>& value)
 {
 	QStringList stringList;
-	QValueList<int>::ConstIterator it;
+	Q3ValueList<int>::ConstIterator it;
 
 	for (it = value.begin(); it != value.end(); ++it)
 		stringList.push_back(QString::number(*it));
@@ -80,7 +97,6 @@ bool ConfigSettings::writeSizes(const QString& key, const QValueList<int>& value
 }
 
 
-#if QT_VERSION >= 300
 /*
  * set the new data
  * TODO check the value
@@ -91,7 +107,6 @@ void ConfigItem::okRename(int col)
 	sym_set_string_value(menu->sym, text(dataColIdx).latin1());
 	listView()->updateList(this);
 }
-#endif
 
 /*
  * update the displayed of a menu entry
@@ -195,11 +210,9 @@ void ConfigItem::updateMenu(void)
 
 		data = sym_get_string_value(sym);
 
-#if QT_VERSION >= 300
 		int i = list->mapIdx(dataColIdx);
 		if (i >= 0)
 			setRenameEnabled(i, TRUE);
-#endif
 		setText(dataColIdx, data);
 		if (type == S_STRING)
 			prompt = QString("%1: %2").arg(prompt).arg(data);
@@ -432,7 +445,7 @@ void ConfigList::updateList(ConfigItem* item)
 	if (!rootEntry) {
 		if (mode != listMode)
 			goto update;
-		QListViewItemIterator it(this);
+		Q3ListViewItemIterator it(this);
 		ConfigItem* item;
 
 		for (; it.current(); ++it) {
@@ -527,11 +540,9 @@ void ConfigList::changeValue(ConfigItem* item)
 	case S_INT:
 	case S_HEX:
 	case S_STRING:
-#if QT_VERSION >= 300
 		if (colMap[dataColIdx] >= 0)
 			item->startRename(colMap[dataColIdx]);
 		else
-#endif
 			parent()->lineEdit->show(item);
 		break;
 	}
@@ -563,7 +574,7 @@ void ConfigList::setParentMenu(void)
 		return;
 	setRootMenu(menu_get_parent_menu(rootEntry->parent));
 
-	QListViewItemIterator it(this);
+	Q3ListViewItemIterator it(this);
 	for (; (item = (ConfigItem*)it.current()); it++) {
 		if (item->menu == oldroot) {
 			setCurrentItem(item);
@@ -645,7 +656,7 @@ void ConfigList::updateMenuList(P* parent, struct menu* menu)
 
 void ConfigList::keyPressEvent(QKeyEvent* ev)
 {
-	QListViewItem* i = currentItem();
+	Q3ListViewItem* i = currentItem();
 	ConfigItem* item;
 	struct menu *menu;
 	enum prop_type type;
@@ -811,10 +822,10 @@ void ConfigList::contextMenuEvent(QContextMenuEvent *e)
 {
 	if (e->y() <= header()->geometry().bottom()) {
 		if (!headerPopup) {
-			QAction *action;
+			Q3Action *action;
 
-			headerPopup = new QPopupMenu(this);
-			action = new QAction(NULL, _("Show Name"), 0, this);
+			headerPopup = new Q3PopupMenu(this);
+			action = new Q3Action(NULL, _("Show Name"), 0, this);
 			  action->setToggleAction(TRUE);
 			  connect(action, SIGNAL(toggled(bool)),
 				  parent(), SLOT(setShowName(bool)));
@@ -822,7 +833,7 @@ void ConfigList::contextMenuEvent(QContextMenuEvent *e)
 				  action, SLOT(setOn(bool)));
 			  action->setOn(showName);
 			  action->addTo(headerPopup);
-			action = new QAction(NULL, _("Show Range"), 0, this);
+			action = new Q3Action(NULL, _("Show Range"), 0, this);
 			  action->setToggleAction(TRUE);
 			  connect(action, SIGNAL(toggled(bool)),
 				  parent(), SLOT(setShowRange(bool)));
@@ -830,7 +841,7 @@ void ConfigList::contextMenuEvent(QContextMenuEvent *e)
 				  action, SLOT(setOn(bool)));
 			  action->setOn(showRange);
 			  action->addTo(headerPopup);
-			action = new QAction(NULL, _("Show Data"), 0, this);
+			action = new Q3Action(NULL, _("Show Data"), 0, this);
 			  action->setToggleAction(TRUE);
 			  connect(action, SIGNAL(toggled(bool)),
 				  parent(), SLOT(setShowData(bool)));
@@ -914,7 +925,7 @@ void ConfigView::setShowData(bool b)
 
 void ConfigList::setAllOpen(bool open)
 {
-	QListViewItemIterator it(this);
+	Q3ListViewItemIterator it(this);
 
 	for (; it.current(); it++)
 		it.current()->setOpen(open);
@@ -937,7 +948,7 @@ void ConfigView::updateListAll(void)
 }
 
 ConfigInfoView::ConfigInfoView(QWidget* parent, const char *name)
-	: Parent(parent, name), sym(0), menu(0)
+	: Parent(parent, name), sym(0), _menu(0)
 {
 	if (name) {
 		configSettings->beginGroup(name);
@@ -960,7 +971,7 @@ void ConfigInfoView::setShowDebug(bool b)
 {
 	if (_showDebug != b) {
 		_showDebug = b;
-		if (menu)
+		if (_menu)
 			menuInfo();
 		else if (sym)
 			symbolInfo();
@@ -970,11 +981,11 @@ void ConfigInfoView::setShowDebug(bool b)
 
 void ConfigInfoView::setInfo(struct menu *m)
 {
-	if (menu == m)
+	if (_menu == m)
 		return;
-	menu = m;
+	_menu = m;
 	sym = NULL;
-	if (!menu)
+	if (!_menu)
 		clear();
 	else
 		menuInfo();
@@ -1001,11 +1012,11 @@ void ConfigInfoView::menuInfo(void)
 	struct symbol* sym;
 	QString head, debug, help;
 
-	sym = menu->sym;
+	sym = _menu->sym;
 	if (sym) {
-		if (menu->prompt) {
+		if (_menu->prompt) {
 			head += "<big><b>";
-			head += print_filter(_(menu->prompt->text));
+			head += print_filter(_(_menu->prompt->text));
 			head += "</b></big>";
 			if (sym->name) {
 				head += " (";
@@ -1031,23 +1042,23 @@ void ConfigInfoView::menuInfo(void)
 			debug = debug_info(sym);
 
 		struct gstr help_gstr = str_new();
-		menu_get_ext_help(menu, &help_gstr);
+		menu_get_ext_help(_menu, &help_gstr);
 		help = print_filter(str_get(&help_gstr));
 		str_free(&help_gstr);
-	} else if (menu->prompt) {
+	} else if (_menu->prompt) {
 		head += "<big><b>";
-		head += print_filter(_(menu->prompt->text));
+		head += print_filter(_(_menu->prompt->text));
 		head += "</b></big><br><br>";
 		if (showDebug()) {
-			if (menu->prompt->visible.expr) {
+			if (_menu->prompt->visible.expr) {
 				debug += "&nbsp;&nbsp;dep: ";
-				expr_print(menu->prompt->visible.expr, expr_print_help, &debug, E_NONE);
+				expr_print(_menu->prompt->visible.expr, expr_print_help, &debug, E_NONE);
 				debug += "<br><br>";
 			}
 		}
 	}
 	if (showDebug())
-		debug += QString().sprintf("defined at %s:%d<br><br>", menu->file->name, menu->lineno);
+		debug += QString().sprintf("defined at %s:%d<br><br>", _menu->file->name, _menu->lineno);
 
 	setText(head + debug + help);
 }
@@ -1150,10 +1161,10 @@ void ConfigInfoView::expr_print_help(void *data, struct symbol *sym, const char
 		*text += str2;
 }
 
-QPopupMenu* ConfigInfoView::createPopupMenu(const QPoint& pos)
+Q3PopupMenu* ConfigInfoView::createPopupMenu(const QPoint& pos)
 {
-	QPopupMenu* popup = Parent::createPopupMenu(pos);
-	QAction* action = new QAction(NULL, _("Show Debug Info"), 0, popup);
+	Q3PopupMenu* popup = Parent::createPopupMenu(pos);
+	Q3Action* action = new Q3Action(NULL, _("Show Debug Info"), 0, popup);
 	  action->setToggleAction(TRUE);
 	  connect(action, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
 	  connect(this, SIGNAL(showDebugChanged(bool)), action, SLOT(setOn(bool)));
@@ -1210,7 +1221,7 @@ ConfigSearchWindow::ConfigSearchWindow(ConfigMainWindow* parent, const char *nam
 			y = configSettings->readNumEntry("/window y", 0, &ok);
 		if (ok)
 			move(x, y);
-		QValueList<int> sizes = configSettings->readSizes("/split", &ok);
+		Q3ValueList<int> sizes = configSettings->readSizes("/split", &ok);
 		if (ok)
 			split->setSizes(sizes);
 		configSettings->endGroup();
@@ -1297,42 +1308,42 @@ ConfigMainWindow::ConfigMainWindow(void)
 	configList->setFocus();
 
 	menu = menuBar();
-	toolBar = new QToolBar("Tools", this);
+	toolBar = new Q3ToolBar("Tools", this);
 
-	backAction = new QAction("Back", QPixmap(xpm_back), _("Back"), 0, this);
+	backAction = new Q3Action("Back", QPixmap(xpm_back), _("Back"), 0, this);
 	  connect(backAction, SIGNAL(activated()), SLOT(goBack()));
 	  backAction->setEnabled(FALSE);
-	QAction *quitAction = new QAction("Quit", _("&Quit"), Qt::CTRL + Qt::Key_Q, this);
+	Q3Action *quitAction = new Q3Action("Quit", _("&Quit"), Qt::CTRL + Qt::Key_Q, this);
 	  connect(quitAction, SIGNAL(activated()), SLOT(close()));
-	QAction *loadAction = new QAction("Load", QPixmap(xpm_load), _("&Load"), Qt::CTRL + Qt::Key_L, this);
+	Q3Action *loadAction = new Q3Action("Load", QPixmap(xpm_load), _("&Load"), Qt::CTRL + Qt::Key_L, this);
 	  connect(loadAction, SIGNAL(activated()), SLOT(loadConfig()));
-	saveAction = new QAction("Save", QPixmap(xpm_save), _("&Save"), Qt::CTRL + Qt::Key_S, this);
+	saveAction = new Q3Action("Save", QPixmap(xpm_save), _("&Save"), Qt::CTRL + Qt::Key_S, this);
 	  connect(saveAction, SIGNAL(activated()), SLOT(saveConfig()));
 	conf_set_changed_callback(conf_changed);
 	// Set saveAction's initial state
 	conf_changed();
-	QAction *saveAsAction = new QAction("Save As...", _("Save &As..."), 0, this);
+	Q3Action *saveAsAction = new Q3Action("Save As...", _("Save &As..."), 0, this);
 	  connect(saveAsAction, SIGNAL(activated()), SLOT(saveConfigAs()));
-	QAction *searchAction = new QAction("Find", _("&Find"), Qt::CTRL + Qt::Key_F, this);
+	Q3Action *searchAction = new Q3Action("Find", _("&Find"), Qt::CTRL + Qt::Key_F, this);
 	  connect(searchAction, SIGNAL(activated()), SLOT(searchConfig()));
-	QAction *singleViewAction = new QAction("Single View", QPixmap(xpm_single_view), _("Single View"), 0, this);
+	Q3Action *singleViewAction = new Q3Action("Single View", QPixmap(xpm_single_view), _("Single View"), 0, this);
 	  connect(singleViewAction, SIGNAL(activated()), SLOT(showSingleView()));
-	QAction *splitViewAction = new QAction("Split View", QPixmap(xpm_split_view), _("Split View"), 0, this);
+	Q3Action *splitViewAction = new Q3Action("Split View", QPixmap(xpm_split_view), _("Split View"), 0, this);
 	  connect(splitViewAction, SIGNAL(activated()), SLOT(showSplitView()));
-	QAction *fullViewAction = new QAction("Full View", QPixmap(xpm_tree_view), _("Full View"), 0, this);
+	Q3Action *fullViewAction = new Q3Action("Full View", QPixmap(xpm_tree_view), _("Full View"), 0, this);
 	  connect(fullViewAction, SIGNAL(activated()), SLOT(showFullView()));
 
-	QAction *showNameAction = new QAction(NULL, _("Show Name"), 0, this);
+	Q3Action *showNameAction = new Q3Action(NULL, _("Show Name"), 0, this);
 	  showNameAction->setToggleAction(TRUE);
 	  connect(showNameAction, SIGNAL(toggled(bool)), configView, SLOT(setShowName(bool)));
 	  connect(configView, SIGNAL(showNameChanged(bool)), showNameAction, SLOT(setOn(bool)));
 	  showNameAction->setOn(configView->showName());
-	QAction *showRangeAction = new QAction(NULL, _("Show Range"), 0, this);
+	Q3Action *showRangeAction = new Q3Action(NULL, _("Show Range"), 0, this);
 	  showRangeAction->setToggleAction(TRUE);
 	  connect(showRangeAction, SIGNAL(toggled(bool)), configView, SLOT(setShowRange(bool)));
 	  connect(configView, SIGNAL(showRangeChanged(bool)), showRangeAction, SLOT(setOn(bool)));
 	  showRangeAction->setOn(configList->showRange);
-	QAction *showDataAction = new QAction(NULL, _("Show Data"), 0, this);
+	Q3Action *showDataAction = new Q3Action(NULL, _("Show Data"), 0, this);
 	  showDataAction->setToggleAction(TRUE);
 	  connect(showDataAction, SIGNAL(toggled(bool)), configView, SLOT(setShowData(bool)));
 	  connect(configView, SIGNAL(showDataChanged(bool)), showDataAction, SLOT(setOn(bool)));
@@ -1345,9 +1356,15 @@ ConfigMainWindow::ConfigMainWindow(void)
 	connect(optGroup, SIGNAL(selected(QAction *)), menuView,
 		SLOT(setOptionMode(QAction *)));
 
-	configView->showNormalAction = new QAction(NULL, _("Show Normal Options"), 0, optGroup);
-	configView->showAllAction = new QAction(NULL, _("Show All Options"), 0, optGroup);
-	configView->showPromptAction = new QAction(NULL, _("Show Prompt Options"), 0, optGroup);
+#if QT_VERSION >= 0x040000
+	configView->showNormalAction = new QAction(_("Show Normal Options"), optGroup);
+	configView->showAllAction = new QAction(_("Show All Options"), optGroup);
+	configView->showPromptAction = new QAction(_("Show Prompt Options"), optGroup);
+#else
+	configView->showNormalAction = new QAction(_("Show Normal Options"), 0, optGroup);
+	configView->showAllAction = new QAction(_("Show All Options"), 0, optGroup);
+	configView->showPromptAction = new QAction(_("Show Prompt Options"), 0, optGroup);
+#endif
 	configView->showNormalAction->setToggleAction(TRUE);
 	configView->showNormalAction->setOn(configList->optMode == normalOpt);
 	configView->showAllAction->setToggleAction(TRUE);
@@ -1355,15 +1372,15 @@ ConfigMainWindow::ConfigMainWindow(void)
 	configView->showPromptAction->setToggleAction(TRUE);
 	configView->showPromptAction->setOn(configList->optMode == promptOpt);
 
-	QAction *showDebugAction = new QAction(NULL, _("Show Debug Info"), 0, this);
+	Q3Action *showDebugAction = new Q3Action(NULL, _("Show Debug Info"), 0, this);
 	  showDebugAction->setToggleAction(TRUE);
 	  connect(showDebugAction, SIGNAL(toggled(bool)), helpText, SLOT(setShowDebug(bool)));
 	  connect(helpText, SIGNAL(showDebugChanged(bool)), showDebugAction, SLOT(setOn(bool)));
 	  showDebugAction->setOn(helpText->showDebug());
 
-	QAction *showIntroAction = new QAction(NULL, _("Introduction"), 0, this);
+	Q3Action *showIntroAction = new Q3Action(NULL, _("Introduction"), 0, this);
 	  connect(showIntroAction, SIGNAL(activated()), SLOT(showIntro()));
-	QAction *showAboutAction = new QAction(NULL, _("About"), 0, this);
+	Q3Action *showAboutAction = new Q3Action(NULL, _("About"), 0, this);
 	  connect(showAboutAction, SIGNAL(activated()), SLOT(showAbout()));
 
 	// init tool bar
@@ -1377,7 +1394,7 @@ ConfigMainWindow::ConfigMainWindow(void)
 	fullViewAction->addTo(toolBar);
 
 	// create config menu
-	QPopupMenu* config = new QPopupMenu(this);
+	Q3PopupMenu* config = new Q3PopupMenu(this);
 	menu->insertItem(_("&File"), config);
 	loadAction->addTo(config);
 	saveAction->addTo(config);
@@ -1386,12 +1403,12 @@ ConfigMainWindow::ConfigMainWindow(void)
 	quitAction->addTo(config);
 
 	// create edit menu
-	QPopupMenu* editMenu = new QPopupMenu(this);
+	Q3PopupMenu* editMenu = new Q3PopupMenu(this);
 	menu->insertItem(_("&Edit"), editMenu);
 	searchAction->addTo(editMenu);
 
 	// create options menu
-	QPopupMenu* optionMenu = new QPopupMenu(this);
+	Q3PopupMenu* optionMenu = new Q3PopupMenu(this);
 	menu->insertItem(_("&Option"), optionMenu);
 	showNameAction->addTo(optionMenu);
 	showRangeAction->addTo(optionMenu);
@@ -1399,10 +1416,9 @@ ConfigMainWindow::ConfigMainWindow(void)
 	optionMenu->insertSeparator();
 	optGroup->addTo(optionMenu);
 	optionMenu->insertSeparator();
-	showDebugAction->addTo(optionMenu);
 
 	// create help menu
-	QPopupMenu* helpMenu = new QPopupMenu(this);
+	Q3PopupMenu* helpMenu = new Q3PopupMenu(this);
 	menu->insertSeparator();
 	menu->insertItem(_("&Help"), helpMenu);
 	showIntroAction->addTo(helpMenu);
@@ -1437,7 +1453,7 @@ ConfigMainWindow::ConfigMainWindow(void)
 		showSplitView();
 
 	// UI setup done, restore splitter positions
-	QValueList<int> sizes = configSettings->readSizes("/split1", &ok);
+	Q3ValueList<int> sizes = configSettings->readSizes("/split1", &ok);
 	if (ok)
 		split1->setSizes(sizes);
 
@@ -1448,7 +1464,7 @@ ConfigMainWindow::ConfigMainWindow(void)
 
 void ConfigMainWindow::loadConfig(void)
 {
-	QString s = QFileDialog::getOpenFileName(conf_get_configname(), NULL, this);
+	QString s = Q3FileDialog::getOpenFileName(conf_get_configname(), NULL, this);
 	if (s.isNull())
 		return;
 	if (conf_read(QFile::encodeName(s)))
@@ -1464,7 +1480,7 @@ void ConfigMainWindow::saveConfig(void)
 
 void ConfigMainWindow::saveConfigAs(void)
 {
-	QString s = QFileDialog::getSaveFileName(conf_get_configname(), NULL, this);
+	QString s = Q3FileDialog::getSaveFileName(conf_get_configname(), NULL, this);
 	if (s.isNull())
 		return;
 	if (conf_write(QFile::encodeName(s)))
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index 636a74b..91677d9 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -3,26 +3,25 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 
+#if QT_VERSION < 0x040000
 #include <qlistview.h>
-#if QT_VERSION >= 300
-#include <qsettings.h>
 #else
-class QSettings {
-public:
-	void beginGroup(const QString& group) { }
-	void endGroup(void) { }
-	bool readBoolEntry(const QString& key, bool def = FALSE, bool* ok = 0) const
-	{ if (ok) *ok = FALSE; return def; }
-	int readNumEntry(const QString& key, int def = 0, bool* ok = 0) const
-	{ if (ok) *ok = FALSE; return def; }
-	QString readEntry(const QString& key, const QString& def = QString::null, bool* ok = 0) const
-	{ if (ok) *ok = FALSE; return def; }
-	QStringList readListEntry(const QString& key, bool* ok = 0) const
-	{ if (ok) *ok = FALSE; return QStringList(); }
-	template <class t>
-	bool writeEntry(const QString& key, t value)
-	{ return TRUE; }
-};
+#include <q3listview.h>
+#endif
+#include <qsettings.h>
+
+#if QT_VERSION < 0x040000
+#define Q3ValueList             QValueList
+#define Q3PopupMenu             QPopupMenu
+#define Q3ListView              QListView
+#define Q3ListViewItem          QListViewItem
+#define Q3VBox                  QVBox
+#define Q3TextBrowser           QTextBrowser
+#define Q3MainWindow            QMainWindow
+#define Q3Action                QAction
+#define Q3ToolBar               QToolBar
+#define Q3ListViewItemIterator  QListViewItemIterator
+#define Q3FileDialog            QFileDialog
 #endif
 
 class ConfigView;
@@ -31,11 +30,10 @@ class ConfigItem;
 class ConfigLineEdit;
 class ConfigMainWindow;
 
-
 class ConfigSettings : public QSettings {
 public:
-	QValueList<int> readSizes(const QString& key, bool *ok);
-	bool writeSizes(const QString& key, const QValueList<int>& value);
+	Q3ValueList<int> readSizes(const QString& key, bool *ok);
+	bool writeSizes(const QString& key, const Q3ValueList<int>& value);
 };
 
 enum colIdx {
@@ -48,9 +46,9 @@ enum optionMode {
 	normalOpt = 0, allOpt, promptOpt
 };
 
-class ConfigList : public QListView {
+class ConfigList : public Q3ListView {
 	Q_OBJECT
-	typedef class QListView Parent;
+	typedef class Q3ListView Parent;
 public:
 	ConfigList(ConfigView* p, const char *name = 0);
 	void reinit(void);
@@ -135,17 +133,17 @@ public:
 	struct menu *rootEntry;
 	QColorGroup disabledColorGroup;
 	QColorGroup inactivedColorGroup;
-	QPopupMenu* headerPopup;
+	Q3PopupMenu* headerPopup;
 
 private:
 	int colMap[colNr];
 	int colRevMap[colNr];
 };
 
-class ConfigItem : public QListViewItem {
-	typedef class QListViewItem Parent;
+class ConfigItem : public Q3ListViewItem {
+	typedef class Q3ListViewItem Parent;
 public:
-	ConfigItem(QListView *parent, ConfigItem *after, struct menu *m, bool v)
+	ConfigItem(Q3ListView *parent, ConfigItem *after, struct menu *m, bool v)
 	: Parent(parent, after), menu(m), visible(v), goParent(false)
 	{
 		init();
@@ -155,16 +153,14 @@ public:
 	{
 		init();
 	}
-	ConfigItem(QListView *parent, ConfigItem *after, bool v)
+	ConfigItem(Q3ListView *parent, ConfigItem *after, bool v)
 	: Parent(parent, after), menu(0), visible(v), goParent(true)
 	{
 		init();
 	}
 	~ConfigItem(void);
 	void init(void);
-#if QT_VERSION >= 300
 	void okRename(int col);
-#endif
 	void updateMenu(void);
 	void testUpdateMenu(bool v);
 	ConfigList* listView() const
@@ -219,9 +215,9 @@ public:
 	ConfigItem *item;
 };
 
-class ConfigView : public QVBox {
+class ConfigView : public Q3VBox {
 	Q_OBJECT
-	typedef class QVBox Parent;
+	typedef class Q3VBox Parent;
 public:
 	ConfigView(QWidget* parent, const char *name = 0);
 	~ConfigView(void);
@@ -252,9 +248,9 @@ public:
 	static QAction *showPromptAction;
 };
 
-class ConfigInfoView : public QTextBrowser {
+class ConfigInfoView : public Q3TextBrowser {
 	Q_OBJECT
-	typedef class QTextBrowser Parent;
+	typedef class Q3TextBrowser Parent;
 public:
 	ConfigInfoView(QWidget* parent, const char *name = 0);
 	bool showDebug(void) const { return _showDebug; }
@@ -274,11 +270,11 @@ protected:
 	QString debug_info(struct symbol *sym);
 	static QString print_filter(const QString &str);
 	static void expr_print_help(void *data, struct symbol *sym, const char *str);
-	QPopupMenu* createPopupMenu(const QPoint& pos);
+	Q3PopupMenu* createPopupMenu(const QPoint& pos);
 	void contentsContextMenuEvent(QContextMenuEvent *e);
 
 	struct symbol *sym;
-	struct menu *menu;
+	struct menu *_menu;
 	bool _showDebug;
 };
 
@@ -302,10 +298,10 @@ protected:
 	struct symbol **result;
 };
 
-class ConfigMainWindow : public QMainWindow {
+class ConfigMainWindow : public Q3MainWindow {
 	Q_OBJECT
 
-	static QAction *saveAction;
+	static Q3Action *saveAction;
 	static void conf_changed(void);
 public:
 	ConfigMainWindow(void);
@@ -334,8 +330,8 @@ protected:
 	ConfigView *configView;
 	ConfigList *configList;
 	ConfigInfoView *helpText;
-	QToolBar *toolBar;
-	QAction *backAction;
+	Q3ToolBar *toolBar;
+	Q3Action *backAction;
 	QSplitter* split1;
 	QSplitter* split2;
 };
