Purge on warnings under Linux.

src/osgText/FTGlyphContainer.cpp

@@ -61,7 +61,7 @@ FT_Vector& FTGlyphContainer::render( unsigned int index, unsigned int next, FT_V
         if (left<glyphs.size()) advance = glyphs[left]->Render( pen);
     }
     
-    kernAdvance.x = advance + kernAdvance.x;
+    kernAdvance.x = static_cast<FT_Pos>(advance) + kernAdvance.x;
 //    kernAdvance.y = advance.y + kernAdvance.y;
     return kernAdvance;
 }

src/osgText/FTPolyGlyph.cpp

@@ -33,7 +33,7 @@ void CALLBACK ftglEnd()
 }
 
 
-void CALLBACK ftglCombine( GLdouble coords[3], void* vertex_data[4], GLfloat weight[4], void** outData)
+void CALLBACK ftglCombine( GLdouble coords[3], void* /*vertex_data*/[4], GLfloat /*weight*/[4], void** outData)
 {
     double* vertex = osgNew double[3]; // FIXME MEM LEAK