diff --git a/doc/compile-issues b/doc/compile-issues
new file mode 100644
index 0000000000000000000000000000000000000000..a0f0dfc3d9b853b19ede54eb7dad6727170efa7e
--- /dev/null
+++ b/doc/compile-issues
@@ -0,0 +1,42 @@
+=======================================
+in move_surface.f90:
+  type (octreev) ov
+  call octree_interpolate_many (3,ov%octree,ov%noctree,ov%icon,ov%nleaves, &
+  call octree_interpolate_many_derivative (3,ov%octree,ov%noctree,ov%icon,ov%nleaves,
+
+in module_definitions.f90
+      type octreev
+      integer,dimension(:),pointer::octree
+      integer noctree,nnode,nleaves
+      double precision,dimension(:),pointer::x,y,z,temp
+      double precision,dimension(:),pointer::unode,vnode,wnode
+      double precision,dimension(:),pointer::pressure
+      double precision,dimension(:),pointer::temporary_nodal_pressure
+      integer,dimension(:,:),pointer::icon
+      logical, dimension(:),pointer :: whole_leaf_in_fluid
+      end type octreev
+
+So  ov%octree is integer(:), pointer
+    ov%icon   is integer(:,:), pointer
+
+in OCTREE/OctreeBitPlus.f90:
+  subroutine octree_interpolate_many (nf,octree,noctree,icon,nleaves,nfield,x,y,z, 
+  integer noctree,octree(noctree),nleaves,icon(8,nleaves)
+
+  subroutine octree_interpolate_many_derivative &
+                                    (nf,octree,noctree,icon,nleaves,nfield,x,y,z, &
+  integer noctree,octree(noctree),nleaves,icon(8,nleaves)
+
+The difference being "pointer", and the "8"
+=======================================
+in CASCADE/find_neighbours, we make a code change:
+c      call indexx(np,points,nodes)
+      call indexx(np,x,nodes)
+c      call delaun (points,np,neighbour,vertices,nt,2*np,
+c     &             vis_tlist,vis_elist,add_tlist,eps,nv_max,
+c     &             mode,inactive,bfirst,itstart,subset)
+      call delaun (points,np,neighbour,vertices,nt,2*np,
+     &             vis_tlist,vis_elist,add_tlist,eps,nv_max,
+     &             mode,dummy1,bfirst,itstart,dummy2)
+=======================================
+