--- src/dialogs/ksexportpicturedlg.cpp
+++ src/dialogs/ksexportpicturedlg.cpp
@@ -36,6 +36,7 @@
 #include <qfile.h>
 #include <qpainter.h>
 #include <cstdio> // tmpfile
+#include <cstdlib>
 
 QString KSExportPictureDlg::m_file_name;
 int KSExportPictureDlg::m_file_format = 0;
--- src/dialogs/kswizarddlgs.h
+++ src/dialogs/kswizarddlgs.h
@@ -31,7 +31,7 @@
  {
   Q_OBJECT
   public:
-     KSWizardDlgSurface( QWidget *parent, KSWorkbook *workbook, KSSheet *sheet, QSAxes *parent, bool surface = true );
+     KSWizardDlgSurface( QWidget *parent, KSWorkbook *workbook, KSSheet *sheet, QSAxes *parentx, bool surface = true );
     ~KSWizardDlgSurface();
 
   public slots:
--- src/formula/mpformula.h
+++ src/formula/mpformula.h
@@ -42,6 +42,7 @@
   * MPSymbol *QSFormula::parse( const QString& formula, MPError& error, FactoryList *locals )
   * @author Kamil
   */
+int yyparse( void *formula_ptr );
 class MPFormula {
 	friend int yylex( MPParserSymbol *symbol_value, void *location_info_ptr, void *formula_ptr );
 	friend void yyerr(  const char *message, void *location_info_ptr, void *formula_ptr );
--- src/formula/mpparser.cpp
+++ src/formula/mpparser.cpp
@@ -26,6 +26,7 @@
 #include"mpsymbols.h"
 #include <cmath>
 #include <cstdio>
+#include <cstdlib>
 
 void yyerr(  const char *message, void *location_info_ptr, void *formula_ptr );
 int yylex( YYSTYPE *symbol_value, void *location_info_ptr, void *formula_ptr );
--- src/formula/mpsymbol.cpp
+++ src/formula/mpsymbol.cpp
@@ -17,6 +17,8 @@
 
 #include"mpsymbol.h"
 #include <string>
+#include <cstring>
+#include <cstdlib>
 
 //--------------------------------------------------------------------------//
 
--- src/ksmatrixeditor.cpp
+++ src/ksmatrixeditor.cpp
@@ -35,7 +35,8 @@
 #include <qmessagebox.h>
 #include <qpainter.h>
 #include <qcursor.h>
-
+#include <cstdlib>
+#include <climits>
 
 //--------------------------------------------------------------------//
 //--------------------------------------------------------------------//
--- src/kssocketio.cpp
+++ src/kssocketio.cpp
@@ -16,6 +16,7 @@
  ***************************************************************************/
 
 #include <cassert>
+#include <cstdlib>
 #include <cstdio> // P_tmpdir
 #include <unistd.h> // unlink
 #include <fcntl.h>
--- src/widgets/qsaxis.cpp
+++ src/widgets/qsaxis.cpp
@@ -19,7 +19,9 @@
 #include"qsaxis.h"
 #include <qregexp.h>
 #include <cassert>
-#include <algo.h> // this is needed for is_sorted
+#include <ext/algorithm> // this is needed for __gnu_cxx::is_sorted
+using namespace __gnu_cxx;
+
 
 //-------------------------------------------------------------//
 //-------------------------------------------------------------//
--- src/widgets/qsctool.cpp
+++ src/widgets/qsctool.cpp
@@ -19,6 +19,7 @@
 #include"qsdrvqt.h"
 #include"qsplotview.h"
 #include <qpainter.h>
+#include <cstdlib>
 
 QSTool::QSTool( QObject *parent )
 : QObject( parent )
--- src/widgets/qsgattr.h
+++ src/widgets/qsgattr.h
@@ -62,6 +62,10 @@
              friend QString  toQString( const QSGColor& a );
              friend QSGColor toQSGColor( const QString&  s );
             };
+bool operator==( const QSGColor&, const QSGColor& );
+bool operator!=( const QSGColor&, const QSGColor& );
+QString  toQString( const QSGColor& a );
+QSGColor toQSGColor( const QString&  s );
 
  //-------------------------------------------------------------//
 
@@ -87,6 +91,10 @@
               friend QString toQString( const QSGFont& font );
               friend QSGFont toQSGFont( const QString& string );
              };
+bool operator==( const QSGFont&, const QSGFont& );
+bool operator!=( const QSGFont&, const QSGFont& );
+QString toQString( const QSGFont& font );
+QSGFont toQSGFont( const QString& string );
 
 //-------------------------------------------------------------//
 
@@ -120,7 +128,10 @@
             friend QString toQString( const QSGLine& line );
             friend QSGLine toQSGLine( const QString& string );
            };
-
+bool operator==( const QSGLine&, const QSGLine& );
+bool operator!=( const QSGLine&, const QSGLine& );
+QString toQString( const QSGLine& line );
+QSGLine toQSGLine( const QString& string );
 
 
 //-------------------------------------------------------------//
@@ -159,6 +170,10 @@
             friend QString toQString( const QSGFill& fill );
             friend QSGFill toQSGFill( const QString& string );
        };
+bool operator==( const QSGFill&, const QSGFill& );
+bool operator!=( const QSGFill&, const QSGFill& );
+QString toQString( const QSGFill& fill );
+QSGFill toQSGFill( const QString& string );
 
 
 
@@ -202,6 +217,10 @@
 	friend QString toQString( const QSGPoint& point );
 	friend QSGPoint toQSGPoint( const QString& string );
        };
+bool operator==( const QSGPoint&, const QSGPoint& );
+bool operator!=( const QSGPoint&, const QSGPoint& );
+QString toQString( const QSGPoint& point );
+QSGPoint toQSGPoint( const QString& string );
 
 //-------------------------------------------------------------//
 
@@ -243,6 +262,10 @@
 	friend QString toQString( const QSGArrow& arrow );
 	friend QSGArrow toQSGArrow( const QString& string );
 	};
+bool operator==( const QSGArrow&, const QSGArrow& );
+bool operator!=( const QSGArrow&, const QSGArrow& );
+QString toQString( const QSGArrow& arrow );
+QSGArrow toQSGArrow( const QString& string );
 
 //-------------------------------------------------------------//
 
@@ -287,6 +310,10 @@
 	bool m_all_colors;
 	void set_default_colors();
     };
+bool operator==( const QSGGradient&, const QSGGradient& );
+bool operator!=( const QSGGradient&, const QSGGradient& );
+QString toQString( const QSGGradient& arrow );
+QSGGradient toQSGGradient( const QString& string );
 
 
 //-------------------------------------------------------------//
--- src/widgets/qssegment.h
+++ src/widgets/qssegment.h
@@ -205,7 +205,7 @@
     QSPt2f m_prev;
     QSPt2f m_prev_prev;
     QSGLine curr_line;
-    void get_stair( const QSPt2f& pos, QSPt2f pos[3] );
+    void get_stair( const QSPt2f& pos, QSPt2f pts[3] );
 };
 
 #endif