5 files changed, 28 insertions, 16 deletions
diff --git a/src/gui/image/qimage_conversions.cpp b/src/gui/image/qimage_conversions.cpp
index 7d1fb23b15..cbdcf49da7 100644
--- a/src/gui/image/qimage_conversions.cpp
+++ b/src/gui/image/qimage_conversions.cpp
@@ -2920,7 +2920,7 @@ InPlace_Image_Converter qimage_inplace_converter_map[QImage::NImageFormats][QIma
     }  // Format_Grayscale8
 };
 
-void qInitImageConversions()
+static void qInitImageConversions()
 {
 #if defined(__SSE2__) && defined(QT_COMPILER_SUPPORTS_SSSE3)
     if (qCpuHasFeature(SSSE3)) {
@@ -2967,4 +2967,15 @@ void qInitImageConversions()
 #endif
 }
 
+class QImageConversionsInitializer {
+public:
+    QImageConversionsInitializer()
+    {
+        qInitImageConversions();
+    }
+};
+
+// Ensure initialization if this object file is linked.
+static QImageConversionsInitializer qImageConversionsInitializer;
+
 QT_END_NAMESPACE
diff --git a/src/gui/image/qimage_p.h b/src/gui/image/qimage_p.h
index feeab60abd..3badda0864 100644
--- a/src/gui/image/qimage_p.h
+++ b/src/gui/image/qimage_p.h
@@ -111,8 +111,6 @@ bool convert_generic_inplace(QImageData *data, QImage::Format dst_format, Qt::Im
 
 void dither_to_Mono(QImageData *dst, const QImageData *src, Qt::ImageConversionFlags flags, bool fromalpha);
 
-void qInitImageConversions();
-
 const uchar *qt_get_bitflip_array();
 Q_GUI_EXPORT void qGamma_correct_back_to_linear_cs(QImage *image);
 
diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 087bed439c..00245b25b0 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -192,9 +192,6 @@ extern void qRegisterGuiVariant();
 #ifndef QT_NO_ANIMATION
 extern void qRegisterGuiGetInterpolator();
 #endif
-extern void qInitBlendFunctions();
-extern void qInitDrawhelperAsm();
-extern void qInitImageConversions();
 
 static bool qt_detectRTLLanguage()
 {
@@ -1327,13 +1324,6 @@ void QGuiApplicationPrivate::init()
     if (platform_integration == 0)
         createPlatformIntegration();
 
-    // Set up blend function tables.
-    qInitBlendFunctions();
-    // Set up which span functions should be used in raster engine...
-    qInitDrawhelperAsm();
-    // and QImage conversion functions
-    qInitImageConversions();
-
     initPalette();
     QFont::initialize();
 
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index 5854008ea3..8f5eb4d095 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -6328,7 +6328,7 @@ void qt_memfill32(quint32 *dest, quint32 color, int count)
 template<QtPixelOrder> const uint *QT_FASTCALL convertA2RGB30PMFromARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
 #endif
 
-void qInitDrawhelperAsm()
+static void qInitDrawhelperFunctions()
 {
 #ifdef __SSE2__
     qDrawHelper[QImage::Format_RGB32].bitmapBlit = qt_bitmapblit32_sse2;
@@ -6523,4 +6523,19 @@ void qInitDrawhelperAsm()
 #endif // QT_COMPILER_SUPPORTS_MIPS_DSP || QT_COMPILER_SUPPORTS_MIPS_DSPR2
 }
 
+extern void qInitBlendFunctions();
+class DrawHelperInitializer {
+public:
+    DrawHelperInitializer()
+    {
+        // Set up basic blend function tables.
+        qInitBlendFunctions();
+        // Set up architecture optimized methods for the current machine.
+        qInitDrawhelperFunctions();
+    }
+};
+
+// Ensure initialization if this object file is linked.
+static DrawHelperInitializer drawHelperInitializer;
+
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h
index 1d70477051..1ff19f4e04 100644
--- a/src/gui/painting/qdrawhelper_p.h
+++ b/src/gui/painting/qdrawhelper_p.h
@@ -213,8 +213,6 @@ struct Operator
     };
 };
 
-void qInitDrawhelperAsm();
-
 class QRasterPaintEngine;
 
 struct QSolidData