diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1d65b3b4..2c89d18e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,18 +1,14 @@
-project (kde-playground)
+project(kde-playground)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules")
 
-set(QT_MIN_VERSION "4.8.2")
-find_package(KDE4 4.14.3 REQUIRED)
+find_package(KDE4 4.18.0 REQUIRED)
 include(KDE4Defaults)
-include(GenerateExportHeader)
 
 set(LIBRARY_TYPE SHARED)
 
 add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
-add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
-
-include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR} ${KDE4_INCLUDES})
+include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${KDE4_INCLUDES})
 
 macro_optional_add_subdirectory (kdbg)
 macro_optional_add_subdirectory (pykde4)
diff --git a/kaffeine/src/mainwindow.cpp b/kaffeine/src/mainwindow.cpp
index f96af222..50eeb473 100644
--- a/kaffeine/src/mainwindow.cpp
+++ b/kaffeine/src/mainwindow.cpp
@@ -29,7 +29,7 @@
 #include <KInputDialog>
 #include <kio/deletejob.h>
 #include <KMenu>
-#include <KMenuBar>
+#include <QMenuBar>
 #include <KRecentFilesAction>
 #include <KShortcutsDialog>
 #include <KStatusNotifierItem>
@@ -149,7 +149,7 @@ MainWindow::MainWindow()
 {
 	// menu structure
 
-	KMenuBar *menuBar = KMainWindow::menuBar();
+	QMenuBar *menuBar = KMainWindow::menuBar();
 	collection = new KActionCollection(this);
 
 	KMenu *menu = new KMenu(i18n("&File"), this);
diff --git a/kamera/kcontrol/kamera.cpp b/kamera/kcontrol/kamera.cpp
index a3cd6791..e177092e 100644
--- a/kamera/kcontrol/kamera.cpp
+++ b/kamera/kcontrol/kamera.cpp
@@ -29,7 +29,6 @@
 #include <QApplication>
 #include <QStandardItemModel>
 
-#include <KGenericFactory>
 #include <KConfig>
 #include <KAction>
 #include <KIcon>
diff --git a/kamera/kioslave/kamera.cpp b/kamera/kioslave/kamera.cpp
index 081e96f6..2f2f2bf8 100644
--- a/kamera/kioslave/kamera.cpp
+++ b/kamera/kioslave/kamera.cpp
@@ -58,7 +58,7 @@ using namespace KIO;
 
 extern "C"
 {
-	KDE_EXPORT int kdemain(int argc, char **argv);
+	Q_DECL_EXPORT int kdemain(int argc, char **argv);
 
 #ifdef HAVE_GPHOTO2_5
 	static void frontendCameraStatus(GPContext *context, const char *status, void *data);
diff --git a/kcachegrind/libcore/CMakeLists.txt b/kcachegrind/libcore/CMakeLists.txt
index dfbe0f66..8c4c9546 100644
--- a/kcachegrind/libcore/CMakeLists.txt
+++ b/kcachegrind/libcore/CMakeLists.txt
@@ -14,7 +14,7 @@ set(core_SRCS
    utils.cpp
    logger.cpp
    config.cpp
-   globalconfig.cpp )
+   globalconfig.cpp
+)
 
-qt4_automoc(${core_SRCS})
 add_library(core STATIC ${core_SRCS})
diff --git a/kcachegrind/libviews/CMakeLists.txt b/kcachegrind/libviews/CMakeLists.txt
index 7183f4c9..e5fa4c38 100644
--- a/kcachegrind/libviews/CMakeLists.txt
+++ b/kcachegrind/libviews/CMakeLists.txt
@@ -28,8 +28,8 @@ set(libviews_SRCS
    coverageitem.cpp
    sourceitem.cpp
    instritem.cpp
-   partlistitem.cpp )
+   partlistitem.cpp
+)
 
-qt4_automoc(${libviews_SRCS})
 add_library(views STATIC ${libviews_SRCS})
 target_link_libraries(views core)
diff --git a/kcachegrind/qcachegrind/CMakeLists.txt b/kcachegrind/qcachegrind/CMakeLists.txt
index 6af19835..c35ba585 100644
--- a/kcachegrind/qcachegrind/CMakeLists.txt
+++ b/kcachegrind/qcachegrind/CMakeLists.txt
@@ -4,7 +4,6 @@ set(qcachegrind_SRCS qcgmain.cpp qcgtoplevel.cpp qcgconfig.cpp
 		     configdialog.cpp configpage.cpp qtcolorbutton.cpp
 		     generalsettings.cpp sourcesettings.cpp colorsettings.cpp)
 
-qt4_automoc(${qcachegrind_SRCS})
 qt4_wrap_ui(qcachegrind_H generalsettings.ui sourcesettings.ui colorsettings.ui)
 qt4_add_resources(qcachegrind_RSRC qcachegrind.qrc)
 
diff --git a/kdbg/CMakeLists.txt b/kdbg/CMakeLists.txt
index 1b74d657..15bfb28a 100644
--- a/kdbg/CMakeLists.txt
+++ b/kdbg/CMakeLists.txt
@@ -9,8 +9,6 @@ add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
 
 include(KDE4Defaults)
 include(MacroLibrary)
-#include(ManualStuff.cmake)
-#include(ConfigureChecks.cmake)
 
 add_subdirectory(kdbg)
 add_subdirectory(po)
diff --git a/kdbg/kdbg/CMakeLists.txt b/kdbg/kdbg/CMakeLists.txt
index 8e6b88fc..141aeb18 100644
--- a/kdbg/kdbg/CMakeLists.txt
+++ b/kdbg/kdbg/CMakeLists.txt
@@ -4,6 +4,7 @@ add_subdirectory(typetables)
 
 include_directories(${KDE4_INCLUDES} ${KDE4_INCLUDE_DIR} ${QT_INCLUDES} )
 include(CheckFunctionExists)
+include(CheckIncludeFiles)
 
 CHECK_INCLUDE_FILES(pty.h HAVE_PTY_H)
 CHECK_INCLUDE_FILES(libutil.h HAVE_LIBUTIL_H)
diff --git a/kdbg/kdbg/debugger.cpp b/kdbg/kdbg/debugger.cpp
index c5fd9941..6ddd4579 100644
--- a/kdbg/kdbg/debugger.cpp
+++ b/kdbg/kdbg/debugger.cpp
@@ -13,7 +13,6 @@
 #include <QFileInfo>
 #include <QListWidget>
 #include <QApplication>
-#include <kcodecs.h>			// KMD5
 #include <kconfig.h>
 #include <klocale.h>			/* i18n */
 #include <kmessagebox.h>
@@ -677,7 +676,7 @@ QString KDebugger::getConfigForExe(const QString& name)
     // a hash of the directory, followed by the program name.
     // Assume that the first 15 positions of the hash are unique;
     // this keeps the file names short.
-    QString hash = KMD5(dir.toUtf8()).base64Digest();
+    QString hash = dir.toUtf8().toBase64();
     hash.replace('/', QString());	// avoid directory separators
     QString pgmConfigFile = hash.left(15) + "-" + fi.fileName();
     pgmConfigFile = KStandardDirs::locateLocal("sessions", pgmConfigFile);
diff --git a/khelpcenter/application.cpp b/khelpcenter/application.cpp
index deace3b0..5685c3f2 100644
--- a/khelpcenter/application.cpp
+++ b/khelpcenter/application.cpp
@@ -21,11 +21,11 @@
 
 #include "application.h"
 #include "mainwindow.h"
-#include "version.h"
 
 #include <KCmdLineArgs>
 #include <KAboutData>
 #include <KLocale>
+#include <kdeversion.h>
 
 using namespace KHC;
 
@@ -56,7 +56,7 @@ int Application::newInstance()
 int main( int argc, char **argv )
 {
   KAboutData aboutData( "khelpcenter", 0, ki18n("KDE Help Center"),
-                        HELPCENTER_VERSION,
+                        KDE_VERSION_STRING,
                         ki18n("The KDE Help Center"),
                         KAboutData::License_GPL,
                         ki18n("(c) 1999-2011, The KHelpCenter developers") );
diff --git a/khelpcenter/application.h b/khelpcenter/application.h
index 0d5cf416..5256acfe 100644
--- a/khelpcenter/application.h
+++ b/khelpcenter/application.h
@@ -41,7 +41,7 @@ namespace KHC {
 
 }
 
-extern "C" { int KDE_EXPORT kdemain(int argc, char **argv); }
+extern "C" { int Q_DECL_EXPORT kdemain(int argc, char **argv); }
 
 #endif // KHC_APPLICATION_H
 // vim:ts=2:sw=2:et
diff --git a/khelpcenter/docentry.cpp b/khelpcenter/docentry.cpp
index bd74e226..1d255db8 100644
--- a/khelpcenter/docentry.cpp
+++ b/khelpcenter/docentry.cpp
@@ -256,7 +256,7 @@ bool DocEntry::docExists() const
   if ( !mUrl.isEmpty() ) 
   {
     KUrl docUrl( mUrl );
-    if ( docUrl.isLocalFile() && !KStandardDirs::exists( docUrl.toLocalFile() ) )
+    if ( docUrl.isLocalFile() && !KGlobal::dirs()->exists( docUrl.toLocalFile() ) )
     {
       return false;
     }
diff --git a/khelpcenter/htmlsearch/htmlsearch.cpp b/khelpcenter/htmlsearch/htmlsearch.cpp
index e52c484c..5f3539b3 100644
--- a/khelpcenter/htmlsearch/htmlsearch.cpp
+++ b/khelpcenter/htmlsearch/htmlsearch.cpp
@@ -33,7 +33,7 @@ void HTMLSearch::scanDir(const QString& dir)
 
     QStringList::ConstIterator it;
 
-    if ( KStandardDirs::exists( dir + "index.docbook" ) ) {
+    if ( KGlobal::dirs()->exists( dir + "index.docbook" ) ) {
         _files.append(dir + "index.docbook");
         progress->setFilesScanned(++_filesScanned);
     } else {
diff --git a/khelpcenter/kcmhelpcenter.cpp b/khelpcenter/kcmhelpcenter.cpp
index 5d5d811c..4ab5ccdd 100644
--- a/khelpcenter/kcmhelpcenter.cpp
+++ b/khelpcenter/kcmhelpcenter.cpp
@@ -628,7 +628,8 @@ void KCMHelpCenter::slotReceivedStdout()
     mStdOut.append( text );
   } else {
     if ( mProgressDialog ) {
-      mProgressDialog->appendLog( mStdOut + text.left( pos ) );
+      QByteArray logtext = mStdOut + text.left( pos );
+      mProgressDialog->appendLog( logtext );
       mStdOut = text.mid( pos + 1 );
     }
   }
diff --git a/khelpcenter/khc_indexbuilder.cpp b/khelpcenter/khc_indexbuilder.cpp
index 4926ff55..0ba4d8d5 100644
--- a/khelpcenter/khc_indexbuilder.cpp
+++ b/khelpcenter/khc_indexbuilder.cpp
@@ -21,8 +21,6 @@
 
 #include "khc_indexbuilder.h"
 
-#include "version.h"
-
 #include <KAboutData>
 #include <KLocale>
 #include <KCmdLineArgs>
@@ -31,6 +29,7 @@
 #include <KProcess>
 #include <KConfig>
 #include <KShell>
+#include <kdeversion.h>
 
 #include <QFile>
 #include <QTextStream>
@@ -152,7 +151,7 @@ int main( int argc, char **argv )
 {
   KAboutData aboutData( "khc_indexbuilder", 0,
                         ki18n("KHelpCenter Index Builder"),
-                        HELPCENTER_VERSION,
+                        KDE_VERSION_STRING,
                         ki18n("The KDE Help Center"),
                         KAboutData::License_GPL,
                         ki18n("(c) 2003, The KHelpCenter developers") );
diff --git a/khelpcenter/slave/kio_help.cpp b/khelpcenter/slave/kio_help.cpp
index 73feb679..212a8991 100644
--- a/khelpcenter/slave/kio_help.cpp
+++ b/khelpcenter/slave/kio_help.cpp
@@ -232,7 +232,7 @@ void HelpProtocol::get( const KUrl& url )
       }
     } else {
         QString docbook_file = file.left(file.lastIndexOf('/')) + "/index.docbook";
-        if (!KStandardDirs::exists(file)) {
+        if (!KGlobal::dirs()->exists(file)) {
             file = docbook_file;
         } else {
             QFileInfo fi(file);
diff --git a/khelpcenter/slave/main.cpp b/khelpcenter/slave/main.cpp
index 142c1a6c..f82b00b1 100644
--- a/khelpcenter/slave/main.cpp
+++ b/khelpcenter/slave/main.cpp
@@ -33,7 +33,7 @@ extern "C" int xmlLoadExtDtdDefaultValue;
 
 extern "C"
 {
-    KDE_EXPORT int kdemain( int argc, char **argv )
+    Q_DECL_EXPORT int kdemain( int argc, char **argv )
     {
         Q_ASSERT(!KGlobal::hasMainComponent()); // kdeinit is messed up if this is the case.
         KComponentData componentData( "kio_help", "kio_help4" );
diff --git a/khelpcenter/slave/xslt.cpp b/khelpcenter/slave/xslt.cpp
index 23fc4129..e2f452ea 100644
--- a/khelpcenter/slave/xslt.cpp
+++ b/khelpcenter/slave/xslt.cpp
@@ -115,7 +115,7 @@ xmlParserInputPtr meinExternalEntityLoader(const char *URL, const char *ID,
 	URL = "docbook/xml-dtd-4.1.2/docbookx.dtd";
 
     QString file;
-    if (KStandardDirs::exists( QDir::currentPath() + "/" + URL ) )
+    if (KGlobal::dirs()->exists( QDir::currentPath() + "/" + URL ) )
         file = QDir::currentPath() + "/" + URL;
     else
         file = locate("dtd", URL);
diff --git a/khelpcenter/version.h b/khelpcenter/version.h
deleted file mode 100644
index 1535474f..00000000
--- a/khelpcenter/version.h
+++ /dev/null
@@ -1,8 +0,0 @@
-
-#ifndef KHC_VERSION_H
-#define KHC_VERSION_H
-
-#define HELPCENTER_VERSION KDE_VERSION_STRING
-
-#endif // KHC_VERSION_H
-// vim:ts=2:sw=2:et