diff --git a/Valentina.pri b/Valentina.pri
index 948e56931..eb3a98d03 100644
--- a/Valentina.pri
+++ b/Valentina.pri
@@ -42,6 +42,7 @@ defineTest(copyToDestdir) {
 
 
 GCC_CXXFLAGS += \
+            -O0 \
             -Wall \
             -Wextra \
             -pedantic \
@@ -83,6 +84,7 @@ GCC_CXXFLAGS += \
             -ftrapv
 
 CLANG_CXXFLAGS += \
+            -O0 \
             -fparse-all-comments \
             -Wabi \
             -Wabstract-final-class \
diff --git a/src/libs/qmuparser/qmuparser.pro b/src/libs/qmuparser/qmuparser.pro
index 648586770..d2651f04d 100644
--- a/src/libs/qmuparser/qmuparser.pro
+++ b/src/libs/qmuparser/qmuparser.pro
@@ -69,6 +69,8 @@ win32-msvc* {
     PRECOMPILED_SOURCE = stable.cpp
 }
 
+include(../../../Valentina.pri)
+
 CONFIG(debug, debug|release){
     # Debug
     unix {
diff --git a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
index 296475af4..a157d4f81 100644
--- a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
@@ -131,7 +131,7 @@ void QVector3DProperty::setValue(const QVariant &value)
     QStringList tmpStrings = value.toString().split(",");
     if (tmpStrings.count() == 3)
     {
-        setVector(tmpStrings[0].toDouble(), tmpStrings[1].toDouble(), tmpStrings[2].toDouble());
+        setVector(tmpStrings[0].toFloat(), tmpStrings[1].toFloat(), tmpStrings[2].toFloat());
     }
 
 }
diff --git a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
index bb1aac396..a3bf55fff 100644
--- a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
@@ -30,8 +30,8 @@
 
 using namespace VPE;
 
-VColorPropertyEditor::VColorPropertyEditor(QWidget *parent) :
-    QWidget(parent)
+VColorPropertyEditor::VColorPropertyEditor(QWidget *parent)
+    : QWidget(parent), Color(), ToolButton(nullptr), TextLabel(nullptr), ColorLabel(nullptr), Spacer(nullptr)
 {
     setAutoFillBackground(true);
 
diff --git a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.h b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.h
index b90218b87..ac6dba31a 100644
--- a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.h
+++ b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.h
@@ -75,6 +75,7 @@ private slots:
     void onToolButtonClicked();
 
 private:
+    Q_DISABLE_COPY(VColorPropertyEditor)
     QColor Color;
     QToolButton* ToolButton;
     QLabel* TextLabel;
diff --git a/src/libs/vpropertyexplorer/plugins/venumproperty.cpp b/src/libs/vpropertyexplorer/plugins/venumproperty.cpp
index 9caf63f6d..30330044d 100644
--- a/src/libs/vpropertyexplorer/plugins/venumproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/venumproperty.cpp
@@ -27,7 +27,7 @@
 using namespace VPE;
 
 VEnumProperty::VEnumProperty(const QString& name)
-    : VProperty(name, QVariant::Int)
+    : VProperty(name, QVariant::Int), EnumerationLiterals()
 {
     VProperty::d_ptr->VariantValue = 0;
     VProperty::d_ptr->VariantValue.convert(QVariant::Int);
diff --git a/src/libs/vpropertyexplorer/plugins/venumproperty.h b/src/libs/vpropertyexplorer/plugins/venumproperty.h
index 40da26dba..b15a04cd5 100644
--- a/src/libs/vpropertyexplorer/plugins/venumproperty.h
+++ b/src/libs/vpropertyexplorer/plugins/venumproperty.h
@@ -90,6 +90,8 @@ protected:
     QStringList EnumerationLiterals;
     // No use of d-pointer in this case, because it is unlikely this will change. If it does, we can still add other
     //members by reimplementing the VPropertyPrivate class without touching this header file.
+private:
+    Q_DISABLE_COPY(VEnumProperty)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
index 277b4dd23..acc4d2b1d 100644
--- a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
@@ -30,7 +30,8 @@
 using namespace VPE;
 
 VFileEditWidget::VFileEditWidget(QWidget *parent, bool is_directory)
-    : QWidget(parent), Directory(is_directory)
+    : QWidget(parent), CurrentFilePath(), ToolButton(nullptr), FileLineEdit(nullptr), FileDialogFilter(), FilterList(),
+      Directory(is_directory)
 {
     // Create the tool button,ToolButton = new QToolButton(this);
     ToolButton = new QToolButton(this);
diff --git a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.h b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.h
index d45a17e81..9cdaca357 100644
--- a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.h
+++ b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.h
@@ -101,6 +101,9 @@ protected:
 
     //! Specifies whether it is being looked for a directory (true) or a file (false, default)
     bool Directory;
+
+private:
+    Q_DISABLE_COPY(VFileEditWidget)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp b/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
index 42ad9df4b..9ec659725 100644
--- a/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
@@ -56,9 +56,9 @@ QWidget* VIntegerProperty::createEditor(QWidget * parent, const QStyleOptionView
     Q_UNUSED(delegate);
 
     QSpinBox* tmpEditor = new QSpinBox(parent);
-    tmpEditor->setMinimum(minValue);
-    tmpEditor->setMaximum(maxValue);
-    tmpEditor->setSingleStep(singleStep);
+    tmpEditor->setMinimum(static_cast<int>(minValue));
+    tmpEditor->setMaximum(static_cast<int>(maxValue));
+    tmpEditor->setSingleStep(static_cast<int>(singleStep));
     tmpEditor->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     tmpEditor->setValue(VProperty::d_ptr->VariantValue.toInt());
     connect(tmpEditor, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this,
@@ -203,7 +203,7 @@ void VDoubleProperty::setSetting(const QString& key, const QVariant& value)
     }
     else if (key == QLatin1String("Precision"))
     {
-        Precision = value.toDouble();
+        Precision = value.toInt();
     }
 }
 
diff --git a/src/libs/vpropertyexplorer/plugins/vobjectproperty.cpp b/src/libs/vpropertyexplorer/plugins/vobjectproperty.cpp
index 46a0d60e6..513d8d812 100644
--- a/src/libs/vpropertyexplorer/plugins/vobjectproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vobjectproperty.cpp
@@ -28,7 +28,7 @@
 using namespace VPE;
 
 VObjectProperty::VObjectProperty(const QString& name)
-    : VProperty(name, QVariant::Int)
+    : VProperty(name, QVariant::Int), objects()
 {
     VProperty::d_ptr->VariantValue = 0;
     VProperty::d_ptr->VariantValue.convert(QVariant::UInt);
diff --git a/src/libs/vpropertyexplorer/plugins/vobjectproperty.h b/src/libs/vpropertyexplorer/plugins/vobjectproperty.h
index ba1462c39..9c5b66f2c 100644
--- a/src/libs/vpropertyexplorer/plugins/vobjectproperty.h
+++ b/src/libs/vpropertyexplorer/plugins/vobjectproperty.h
@@ -86,6 +86,9 @@ protected:
     void FillList(QComboBox *box, const QMap<QString, quint32> &list)const;
     // No use of d-pointer in this case, because it is unlikely this will change. If it does, we can still add other
     //members by reimplementing the VPropertyPrivate class without touching this header file.
+
+private:
+    Q_DISABLE_COPY(VObjectProperty)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.cpp b/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.cpp
index c4864150f..412c2f456 100644
--- a/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.cpp
@@ -26,7 +26,7 @@
 using namespace VPE;
 
 VShortcutEditWidget::VShortcutEditWidget(QWidget *parent)
-    : QWidget(parent)
+    : QWidget(parent), CurrentKeySequence(), LineEdit(nullptr)
 {
     // Create the line edit widget
     LineEdit = new QLineEdit(this);
diff --git a/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.h b/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.h
index 97a6ffb46..6e9c91144 100644
--- a/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.h
+++ b/src/libs/vpropertyexplorer/plugins/vshortcutpropertyeditor.h
@@ -78,6 +78,9 @@ protected:
 
     //! The line to display and edit the key sequence
     QLineEdit* LineEdit;
+
+private:
+    Q_DISABLE_COPY(VShortcutEditWidget)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/stable.cpp b/src/libs/vpropertyexplorer/stable.cpp
new file mode 100644
index 000000000..dc0e7d1cb
--- /dev/null
+++ b/src/libs/vpropertyexplorer/stable.cpp
@@ -0,0 +1,22 @@
+/************************************************************************
+ **
+ **  @file   stable.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   20 9, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  All rights reserved. This program and the accompanying materials
+ **  are made available under the terms of the GNU Lesser General Public License
+ **  (LGPL) version 2.1 which accompanies this distribution, and is available at
+ **  http://www.gnu.org/licenses/lgpl-2.1.html
+ **
+ **  This library is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ **  Lesser General Public License for more details.
+ **
+ *************************************************************************/
+
+// Build the precompiled headers.
+#include "stable.h"
diff --git a/src/libs/vpropertyexplorer/stable.h b/src/libs/vpropertyexplorer/stable.h
new file mode 100644
index 000000000..6390189fc
--- /dev/null
+++ b/src/libs/vpropertyexplorer/stable.h
@@ -0,0 +1,58 @@
+/************************************************************************
+ **
+ **  @file   stable.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   20 9, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  All rights reserved. This program and the accompanying materials
+ **  are made available under the terms of the GNU Lesser General Public License
+ **  (LGPL) version 2.1 which accompanies this distribution, and is available at
+ **  http://www.gnu.org/licenses/lgpl-2.1.html
+ **
+ **  This library is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ **  Lesser General Public License for more details.
+ **
+ *************************************************************************/
+
+#ifndef STABLE_H
+#define STABLE_H
+
+/* I like to include this pragma too, so the build log indicates if pre-compiled headers were in use. */
+#ifndef __clang__
+#pragma message("Compiling precompiled headers for VPropertyExplorer library.\n")
+#endif
+
+/* Add C includes here */
+
+#if defined __cplusplus
+/* Add C++ includes here */
+
+/*In all cases we need include core header for getting defined values*/
+#ifdef QT_CORE_LIB
+#   include <QtCore>
+#endif
+
+//In Windows you can't use same header in all modes.
+#if defined(Q_OS_WIN)
+#   if defined(QT_NO_DEBUG)//release mode
+
+#       ifdef QT_WIDGETS_LIB
+#           include <QtWidgets>
+#       endif
+
+#   endif/*QT_NO_DEBUG*/
+#else
+
+#   ifdef QT_WIDGETS_LIB
+#       include <QtWidgets>
+#   endif
+
+#endif/*Q_OS_WIN*/
+
+#endif /*__cplusplus*/
+
+#endif // STABLE_H
diff --git a/src/libs/vpropertyexplorer/vpropertyexplorer.pro b/src/libs/vpropertyexplorer/vpropertyexplorer.pro
index 69068d79c..b45f272e0 100644
--- a/src/libs/vpropertyexplorer/vpropertyexplorer.pro
+++ b/src/libs/vpropertyexplorer/vpropertyexplorer.pro
@@ -49,7 +49,8 @@ SOURCES += \
     vstandardpropertyfactory.cpp \
     plugins/vstringproperty.cpp \
     plugins/vpointfproperty.cpp \
-    plugins/vobjectproperty.cpp
+    plugins/vobjectproperty.cpp \
+    stable.cpp
 
 HEADERS +=\
         vpropertyexplorer_global.h \
@@ -88,13 +89,31 @@ HEADERS +=\
     plugins/vstringproperty.h \
     plugins/vpointfproperty.h \
     plugins/vobjectproperty.h \
-    vproperties.h
+    vproperties.h \
+    stable.h
 
 unix {
     target.path = /usr/lib
     INSTALLS += target
+
+    *-g++{
+        QMAKE_CXX = ccache g++
+    }
+
+    clang*{
+        QMAKE_CXX = ccache clang++
+    }
 }
 
+CONFIG += precompile_header
+# Precompiled headers (PCH)
+PRECOMPILED_HEADER = stable.h
+win32-msvc* {
+    PRECOMPILED_SOURCE = stable.cpp
+}
+
+include(../../../Valentina.pri)
+
 CONFIG(debug, debug|release){
     # Debug
     unix {
diff --git a/src/libs/vpropertyexplorer/vpropertyfactorymanager.h b/src/libs/vpropertyexplorer/vpropertyfactorymanager.h
index 18467aeba..4e8c2060f 100644
--- a/src/libs/vpropertyexplorer/vpropertyfactorymanager.h
+++ b/src/libs/vpropertyexplorer/vpropertyfactorymanager.h
@@ -83,6 +83,8 @@ protected:
 
     //! The default manager
     static VPropertyFactoryManager* DefaultManager;
+private:
+    Q_DISABLE_COPY(VPropertyFactoryManager)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertyfactorymanager_p.h b/src/libs/vpropertyexplorer/vpropertyfactorymanager_p.h
index 28aa1e3f7..4c517d5ee 100644
--- a/src/libs/vpropertyexplorer/vpropertyfactorymanager_p.h
+++ b/src/libs/vpropertyexplorer/vpropertyfactorymanager_p.h
@@ -34,6 +34,7 @@ class VAbstractPropertyFactory;
 class VPropertyFactoryManagerPrivate
 {
 public:
+    VPropertyFactoryManagerPrivate():Factories(QMap<QString, VAbstractPropertyFactory*>()){}
     QMap<QString, VAbstractPropertyFactory*> Factories;
 
 };
diff --git a/src/libs/vpropertyexplorer/vpropertyformview_p.h b/src/libs/vpropertyexplorer/vpropertyformview_p.h
index 92646ce7b..28dc4a480 100644
--- a/src/libs/vpropertyexplorer/vpropertyformview_p.h
+++ b/src/libs/vpropertyexplorer/vpropertyformview_p.h
@@ -48,15 +48,24 @@ public:
 
     VPropertyFormViewPrivate()
         : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(NULL), NeedsRebuild(false),
-          IgnoreDataChangedSignal(false) {}
+          IgnoreDataChangedSignal(false)
+    {}
 
     VPropertyFormViewPrivate(VPropertyModel* prop_model)
         : VPropertyFormWidgetPrivate(), Model(prop_model), PropertySet(NULL), NeedsRebuild(false),
-          IgnoreDataChangedSignal(false) {}
+          IgnoreDataChangedSignal(false)
+    {}
 
     VPropertyFormViewPrivate(VPropertySet* prop_set)
         : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(prop_set), NeedsRebuild(false),
-          IgnoreDataChangedSignal(false) {}
+          IgnoreDataChangedSignal(false)
+    {}
+
+    virtual ~VPropertyFormViewPrivate()
+    {}
+
+private:
+    Q_DISABLE_COPY(VPropertyFormViewPrivate)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertyformwidget_p.h b/src/libs/vpropertyexplorer/vpropertyformwidget_p.h
index 12d2ed8a9..0cba9f21f 100644
--- a/src/libs/vpropertyexplorer/vpropertyformwidget_p.h
+++ b/src/libs/vpropertyexplorer/vpropertyformwidget_p.h
@@ -55,12 +55,16 @@ public:
 
     //! Default constructor
     VPropertyFormWidgetPrivate()
-        : UpdateEditors(true)
+        : Properties(QList<VProperty*>()), EditorWidgets(QList<SEditorWidget>()), UpdateEditors(true)
     {}
 
     //! Constructor
     VPropertyFormWidgetPrivate(const QList<VProperty*>& properties)
-        : Properties(properties), UpdateEditors(true) {}
+        : Properties(properties), EditorWidgets(QList<SEditorWidget>()), UpdateEditors(true)
+    {}
+
+    virtual ~VPropertyFormWidgetPrivate()
+    {}
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertymodel_p.h b/src/libs/vpropertyexplorer/vpropertymodel_p.h
index 81cf8d491..cabd95480 100644
--- a/src/libs/vpropertyexplorer/vpropertymodel_p.h
+++ b/src/libs/vpropertyexplorer/vpropertymodel_p.h
@@ -47,7 +47,7 @@ public:
 
     //! Constructor
     VPropertyModelPrivate()
-        : Properties(nullptr)
+        : Properties(nullptr), HeadlineProperty(QString()), HeadlineValue(QString())
     {
         //: The text that appears in the first column header
         HeadlineProperty = QObject::tr("Property");
@@ -55,6 +55,9 @@ public:
         //: The text that appears in the second column header
         HeadlineValue = QObject::tr("Value");
     }
+
+private:
+    Q_DISABLE_COPY(VPropertyModelPrivate)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertyset_p.h b/src/libs/vpropertyexplorer/vpropertyset_p.h
index 9b7baf7dd..5c97ffd3d 100644
--- a/src/libs/vpropertyexplorer/vpropertyset_p.h
+++ b/src/libs/vpropertyexplorer/vpropertyset_p.h
@@ -43,8 +43,11 @@ public:
 
     //! Constructor
     VPropertySetPrivate()
-    {
-    }
+        : Properties(QMap<QString, VProperty*>()), RootProperties(QList<VProperty*>())
+    {}
+
+private:
+    Q_DISABLE_COPY(VPropertySetPrivate)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertytreeview.h b/src/libs/vpropertyexplorer/vpropertytreeview.h
index 635cbdb89..62ab14831 100644
--- a/src/libs/vpropertyexplorer/vpropertytreeview.h
+++ b/src/libs/vpropertyexplorer/vpropertytreeview.h
@@ -59,6 +59,9 @@ protected:
 
     //! The protected data
     VPropertyTreeViewPrivate* d_ptr;
+
+private:
+    Q_DISABLE_COPY(VPropertyTreeView)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vserializedproperty.cpp b/src/libs/vpropertyexplorer/vserializedproperty.cpp
index a19e85df3..f27c21cb6 100644
--- a/src/libs/vpropertyexplorer/vserializedproperty.cpp
+++ b/src/libs/vpropertyexplorer/vserializedproperty.cpp
@@ -23,15 +23,15 @@
 using namespace VPE;
 
 VSerializedProperty::VSerializedProperty()
-    : ID(), Type(), Value()
-{
-}
+    : ID(), Type(), Value(), Children()
+{}
 
 /*! Creates a new VSerializedProperty from an existing property
 
 */
 VSerializedProperty::VSerializedProperty(const VProperty* property, const VPropertySet* set)
-    : ID(), Type(property ? property->type() : QString()), Value(property ? property->getValue() : QVariant())
+    : ID(), Type(property ? property->type() : QString()), Value(property ? property->getValue() : QVariant()),
+      Children()
 {
     if (set)
     {
@@ -42,20 +42,19 @@ VSerializedProperty::VSerializedProperty(const VProperty* property, const VPrope
 }
 
 VSerializedProperty::VSerializedProperty(const VProperty *property, const QString &id, const VPropertySet *set)
-    : ID(id), Type(property ? property->type() : QString()), Value(property ? property->getValue() : QVariant())
+    : ID(id), Type(property ? property->type() : QString()), Value(property ? property->getValue() : QVariant()),
+      Children()
 {
     initChildren(property, set);
 }
 
 VSerializedProperty::VSerializedProperty(const QString &id, const QString &type, const QVariant &value)
-    : ID(id), Type(type), Value(value)
+    : ID(id), Type(type), Value(value), Children()
 {
 }
 
 VPE::VSerializedProperty::~VSerializedProperty()
-{
-    //
-}
+{}
 
 void VSerializedProperty::initChildren(const VProperty *property, const VPropertySet *set)
 {