diff --git a/basegraph.cpp b/basegraph.cpp
index b1d80884..738adb72 100644
--- a/basegraph.cpp
+++ b/basegraph.cpp
@@ -220,6 +220,7 @@ void setcameraangle(bool b) { }
 EX void reset_projection() { }
 EX void glflush() { }
 EX bool model_needs_depth() { return false; }
+void display_data::set_all(int ed) {}
 #endif
 
 #if CAP_GL
diff --git a/drawing.cpp b/drawing.cpp
index 32071044..77158012 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -1116,6 +1116,7 @@ EX namespace s2xe {
       }
     }
   
+#if CAP_GL
 void draw_s2xe(dqi_poly *p) {
   if(!p->cnt) return;
   if(p->flags & POLY_TRIANGLES) {
@@ -1157,6 +1158,7 @@ void draw_s2xe(dqi_poly *p) {
     }
   else draw_s2xe0(p);
   }
+#endif
 
 struct point_data {
   hyperpoint direction;
@@ -1165,6 +1167,7 @@ struct point_data {
   int bad;
   };
 
+#if CAP_GL
 void draw_s2xe0(dqi_poly *p) {
   if(!p->cnt) return;
   dqi_poly npoly = *p;
@@ -1244,6 +1247,7 @@ void draw_s2xe0(dqi_poly *p) {
     npoly.gldraw();
     }
   }
+#endif
 EX }
 
 EX namespace ods {
diff --git a/geometry.cpp b/geometry.cpp
index cb3964ac..cbf48565 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -1084,7 +1084,7 @@ EX void check_cgi() {
     floor_textures = NULL;
     }
   
-  #if MAXMDIM >= 4
+  #if MAXMDIM >= 4 && CAP_GL
   if(!floor_textures && GDIM == 3 && (cgi.state & 2)) 
     make_floor_textures();
   #endif
diff --git a/graph.cpp b/graph.cpp
index 4ec77a31..be4fa32b 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -4884,7 +4884,7 @@ EX void drawfullmap() {
   draw_boundary(1);
   
   draw_model_elements();
-  #if MAXMDIM >= 4
+  #if MAXMDIM >= 4 && CAP_GL
   prepare_sky();
   #endif
   #endif
diff --git a/polygons.cpp b/polygons.cpp
index 5f635bd8..bc776755 100644
--- a/polygons.cpp
+++ b/polygons.cpp
@@ -1141,7 +1141,7 @@ void geometry_information::configure_floorshapes() {
 void geometry_information::prepare_shapes() {
   require_basics();
   if(cgflags & qRAYONLY) return;
-  #if MAXMDIM >= 4
+  #if MAXMDIM >= 4 && CAP_GL
   if(GDIM == 3 && !floor_textures) make_floor_textures();
   #endif
 
diff --git a/sky.cpp b/sky.cpp
index 49b8bd82..b0398b19 100644
--- a/sky.cpp
+++ b/sky.cpp
@@ -2,8 +2,8 @@
 
 namespace hr {
 
-#if MAXMDIM >= 4 && CAP_GL
 EX ld camera_level;
+#if MAXMDIM >= 4 && CAP_GL
 
 EX int get_skybrightness(int mul IS(1)) {
   ld s = 1 - mul * (camera_level - cgi.WALL) / -2;