diff -ru kpl-4.1/lib/kplitem.cpp kpl-4.1-new/lib/kplitem.cpp
--- kpl-4.1/lib/kplitem.cpp	2015-06-20 18:16:49.000000000 +0200
+++ kpl-4.1-new/lib/kplitem.cpp	2016-06-24 11:37:37.000000000 +0200
@@ -30,6 +30,7 @@
 #include <KTemporaryFile>
 #include "kplitem.h"
 
+const double KplItem::Deg2rad = M_PI / 180;
 double KplItem::m_dashOffset = 0;
 
 KplItem::KplItem(double relSize) : m_relSize(relSize)
diff -ru kpl-4.1/lib/kplitem.h kpl-4.1-new/lib/kplitem.h
--- kpl-4.1/lib/kplitem.h	2015-06-20 18:16:49.000000000 +0200
+++ kpl-4.1-new/lib/kplitem.h	2016-06-24 11:38:40.000000000 +0200
@@ -112,7 +112,7 @@
     DotLine2         ///< Dotted line with short spaces.
   };
   /** Factor for converting from degrees to radians. */
-  static const double Deg2rad = M_PI / 180;
+  static const double Deg2rad;
   /**
     * Constructor. Initializes corresponding to arguments.
     * @param relSize relative size of text and symbols.
diff -ru kpl-4.1/lib/psgraph.cpp kpl-4.1-new/lib/psgraph.cpp
--- kpl-4.1/lib/psgraph.cpp	2015-06-20 18:16:49.000000000 +0200
+++ kpl-4.1-new/lib/psgraph.cpp	2016-06-24 12:24:59.000000000 +0200
@@ -30,6 +30,8 @@
 #include "splineitem.h"
 #include "textitem.h"
 
+const double PSGraph::pts = 72 / 2.54;
+
 PSGraph::PSGraph(QTextStream* stream, const QList<QGraphicsItem*>& list,
                  const QSizeF& size, bool landscape, bool eps) :
  m_logX(false), m_logY(false), m_symbol(KplItem::OpenCircle), m_x0(0), m_y0(0),
diff -ru kpl-4.1/lib/psgraph.h kpl-4.1-new/lib/psgraph.h
--- kpl-4.1/lib/psgraph.h	2015-06-20 18:16:49.000000000 +0200
+++ kpl-4.1-new/lib/psgraph.h	2016-06-24 12:24:17.000000000 +0200
@@ -118,7 +118,7 @@
     */
   double setRelSize(double m_relSize);
   /** Points per cm. */
-  static const double pts = 72 / 2.54;
+  static const double pts;
 
 protected:
   /**
diff -ru kpl-4.1/src/kpldoc.cpp kpl-4.1-new/src/kpldoc.cpp
--- kpl-4.1/src/kpldoc.cpp	2015-06-20 18:17:59.000000000 +0200
+++ kpl-4.1-new/src/kpldoc.cpp	2016-06-24 12:27:09.000000000 +0200
@@ -64,6 +64,8 @@
 #include "textitem.h"
 #include "threeddlg.h"
 
+const double KplDoc::Snap = 0.05;
+
 /**
  * Applies changes to item and forces redrawing.
  * @param item pointer to plot item.
diff -ru kpl-4.1/src/kpldoc.h kpl-4.1-new/src/kpldoc.h
--- kpl-4.1/src/kpldoc.h	2015-06-20 18:18:00.000000000 +0200
+++ kpl-4.1-new/src/kpldoc.h	2016-06-24 12:26:46.000000000 +0200
@@ -543,7 +543,7 @@
   }
   bool defSel, m_fitNonLinear;
   int nyLeg, m_fitMaxIterations;
-  static const double Snap = 0.05;
+  static const double Snap;
   KplScene* m_scene;
   QWidget* app;
   FileType m_fileType;