Fix OCC6.5.3 build errors

src/3rdParty/salomesmesh/src/Controls/SMESH_Controls.cpp

@@ -63,6 +63,11 @@
 
 #include "SMESHDS_Mesh.hxx"
 #include "SMESHDS_GroupBase.hxx"
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 /*
                             AUXILIARY METHODS

src/3rdParty/salomesmesh/src/SMESH/SMESH_MeshEditor.cpp

@@ -82,6 +82,10 @@
 #include <numeric>
 #include <limits>
 
+#ifndef PI
+#define PI M_PI
+#endif
+
 #define cast2Node(elem) static_cast<const SMDS_MeshNode*>( elem )
 
 using namespace std;

src/3rdParty/salomesmesh/src/SMESH/SMESH_Pattern.cpp

@@ -74,6 +74,11 @@
 #include "SMESH_subMesh.hxx"
 
 #include "utilities.h"
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 using namespace std;
 

src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_AutomaticLength.cpp

@@ -37,6 +37,11 @@
 #include <TopExp.hxx>
 #include <TopoDS.hxx>
 #include <TopoDS_Edge.hxx>
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 using namespace std;
 

src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_CompositeHexa_3D.cpp

@@ -56,6 +56,11 @@
 #include <list>
 #include <set>
 #include <vector>
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 
 #ifdef _DEBUG_

src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_QuadToTriaAdaptor.cpp

@@ -47,6 +47,11 @@ typedef NCollection_Array1<TColStd_SequenceOfInteger> StdMeshers_Array1OfSequenc
 #include <SMESH_Array1.hxx>
 typedef SMESH_Array1<TColStd_SequenceOfInteger> StdMeshers_Array1OfSequenceOfInteger;
 #endif
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 //=======================================================================
 //function : StdMeshers_QuadToTriaAdaptor

src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_RadialQuadrangle_1D2D.cpp

@@ -54,6 +54,11 @@
 #include <TColgp_SequenceOfPnt2d.hxx>
 #include <TopExp_Explorer.hxx>
 #include <TopoDS.hxx>
+#include <cmath>
+
+#ifndef PI
+#define PI M_PI
+#endif
 
 
 using namespace std;