[FIX] made it compile on Mac.

src/core/common/math/WPlane.cpp

@@ -79,10 +79,14 @@ boost::shared_ptr< std::set< WPosition > > WPlane::samplePoints( double stepWidt
     {
         for( size_t j = 0; j < numX; ++j )
         {
-            result->insert( m_pos - i * ycrement - j * xcrement );
-            result->insert( m_pos + i * ycrement - j * xcrement );
-            result->insert( m_pos - i * ycrement + j * xcrement );
-            result->insert( m_pos + i * ycrement + j * xcrement );
+            // NOTE: on some machines with older compilers, the size_t is not mapped to uint32_t or uint64_t. This
+            // breaks our WMatrixFixed type promotion. So we use doubles directly.
+            double id = i;
+            double jd = j;
+            result->insert( m_pos - id * ycrement - jd * xcrement );
+            result->insert( m_pos + id * ycrement - jd * xcrement );
+            result->insert( m_pos - id * ycrement + jd * xcrement );
+            result->insert( m_pos + id * ycrement + jd * xcrement );
         }
     }
     return result;

src/core/dataHandler/datastructures/WFiberCluster.cpp

@@ -162,7 +162,7 @@ void WFiberCluster::generateCenterLine() const
         {
             avgPosition += cit->at( i );
         }
-        avgPosition /= fibs->size();
+        avgPosition /= static_cast< double >( fibs->size() );
         m_centerLine->push_back( avgPosition );
     }
 

src/core/graphicsEngine/WGEGraphicsWindow.cpp

@@ -28,16 +28,19 @@
 
 #include "exceptions/WGEInitFailed.h"
 
-WGEGraphicsWindow::WGEGraphicsWindow( osg::ref_ptr<osg::Referenced> wdata,
+WGEGraphicsWindow::WGEGraphicsWindow( osg::ref_ptr<osg::Referenced>
+     #ifndef __APPLE__
+        wdata  // this parameter is only needed on non-mac
+     #endif
+        ,
                                             int x,
                                             int y,
                                             int width,
                                             int height )
 {
 #ifndef __APPLE__
-    m_WindowData = wdata;
-
     // initialize context
+    m_WindowData = wdata;
     try
     {
         createContext( x, y, width, height );
@@ -48,7 +51,8 @@ WGEGraphicsWindow::WGEGraphicsWindow( osg::ref_ptr<osg::Referenced> wdata,
         throw WGEInitFailed( "Initialization of OpenGL graphics context failed." );
     }
 #else
-    m_GraphicsWindow( new osgViewer::GraphicsWindowEmbedded( x, y, width, height ) );
+    m_GraphicsWindow = osg::ref_ptr<osgViewer::GraphicsWindow>(
+            static_cast<osgViewer::GraphicsWindow*>( new osgViewer::GraphicsWindowEmbedded( x, y, width, height ) ) );
 #endif
 }