COMP: remove commented Make/options item (#2668)

COMP: update include for CGAL-5.5 (#2665)

  old:  Robust_circumcenter_filtered_traits_3
  new:  Robust_weighted_circumcenter_filtered_traits_3

COMP: adjust CGAL rule for OSX (#2664)

- since CGAL is now header-only, the previous OSX-specific rules have
  become redundant

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/CGALTriangulation3DKernel.H

@@ -30,8 +30,8 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef CGALTriangulation3DKernel_H
-#define CGALTriangulation3DKernel_H
+#ifndef Foam_CGALTriangulation3DKernel_H
+#define Foam_CGALTriangulation3DKernel_H
 
 // Silence boost bind deprecation warnings (before CGAL-5.2.1)
 #include "CGAL/version.h"
@@ -54,9 +54,19 @@ Description
 //    #include "CGAL/Robust_circumcenter_traits_3.h"
 //    typedef CGAL::Robust_circumcenter_traits_3<baseK>           K;
 
+#if defined(CGAL_VERSION_NR) && (CGAL_VERSION_NR < 1050500000)
+    // Prior to CGAL-5.5
+
     #include "CGAL/Robust_circumcenter_filtered_traits_3.h"
     typedef CGAL::Robust_circumcenter_filtered_traits_3<baseK>  K;
 
+#else
+
+    #include "CGAL/Robust_weighted_circumcenter_filtered_traits_3.h"
+    typedef CGAL::Robust_weighted_circumcenter_filtered_traits_3<baseK> K;
+
+#endif
+
 #else
 
     // Very robust but expensive kernel

applications/utilities/preProcessing/viewFactorsGen/Make/options

@@ -4,7 +4,6 @@ EXE_INC = \
     -Wno-old-style-cast \
     $(COMP_FLAGS) \
     ${CGAL_INC} \
-    -DCGAL_HEADER_ONLY \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
     -I$(LIB_SRC)/surfMesh/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
@@ -12,7 +11,6 @@ EXE_INC = \
 
 
 EXE_LIBS = \
-    /* ${CGAL_LIBS} */ \
     -lfiniteVolume \
     -lsurfMesh \
     -lmeshTools \