added some missing guards for CAP_BT and MAXMDIM

cell.cpp

@@ -867,8 +867,10 @@ int celldistance(cell *c1, cell *c2) {
     return 64;
     }
 
+  #if CAP_BT && MAXMDIM >= 4
   if(binarytiling && DIM == 3) 
     return binary::celldistance3(c1, c2);
+  #endif
 
   if(euclid && DIM == 3) 
     return euclid3::celldistance(c1, c2);

geometry.cpp

@@ -182,8 +182,12 @@ void precalc() {
     rhexf = arcm::current.scale() * .5;
     }
   #endif
+  #if CAP_BT
   if(binarytiling) hexvdist = rhexf = 1, tessf = 1, scalefactor = 1, crossf = hcrossf7;
+  #endif
+  #if CAP_BT && MAXMDIM >= 4
   if(binarytiling && DIM == 3) binary::build_tmatrix();
+  #endif
   
   scalefactor = crossf / hcrossf7;
   orbsize = crossf;

polygons.cpp

@@ -1942,6 +1942,7 @@ ld dlow_table[SIDEPARS], dhi_table[SIDEPARS];
 
 #define SHADMUL (S3==4 ? 1.05 : 1.3)
 
+#if CAP_BT && MAXMDIM >= 4
 void make_wall(hpcshape& sh, int x0, int y0, int z0, int x1, int y1, int z1, int x2, int y2, int z2, int flags) {
   hyperpoint h0 = point3(x0,y0,z0);
   hyperpoint h1 = point3(x1,y1,z1);
@@ -1978,6 +1979,7 @@ void make_wall(hpcshape& sh, int x0, int y0, int z0, int x1, int y1, int z1, int
     at(h0);
     }
   }
+#endif
 
 void buildpolys() {