Disable GL2PS on Android/IOS.

IO/Export/module.cmake

-if(VTK_RENDERING_BACKEND STREQUAL "OpenGL")
-  set(opengl_depends vtkRenderingGL2PS)
+if(ANDROID OR APPLE_IOS) # No gl2ps on mobile
+  set(gl2ps_depends)
+  set(gl2ps_test_depends)
+elseif(VTK_RENDERING_BACKEND STREQUAL "OpenGL")
+  set(gl2ps_depends vtkRenderingGL2PS)
+  set(gl2ps_test_depends vtkIOExportOpenGL)
 elseif(VTK_RENDERING_BACKEND STREQUAL "OpenGL2")
-  set(opengl_depends vtkRenderingGL2PSOpenGL2)
+  set(gl2ps_depends vtkRenderingGL2PSOpenGL2)
+  set(gl2ps_test_depends vtkIOExportOpenGL2)
 endif()
 
 vtk_module(vtkIOExport
@@ -9,9 +14,9 @@ vtk_module(vtkIOExport
     Rendering
   DEPENDS
     vtkCommonCore
-    ${opengl_depends}
     vtkImagingCore
     vtkRenderingCore
+    ${gl2ps_depends}
   PRIVATE_DEPENDS
     vtkIOImage
     vtkFiltersGeometry
@@ -19,7 +24,6 @@ vtk_module(vtkIOExport
     vtkCommonColor
     vtkChartsCore
     vtkInteractionImage
-    vtkIOExport${VTK_RENDERING_BACKEND}
     vtkIOParallel
     vtkTestingRendering
     vtkInteractionStyle
@@ -28,4 +32,5 @@ vtk_module(vtkIOExport
     vtkRenderingLabel
     vtkRenderingVolume${VTK_RENDERING_BACKEND}
     vtkViewsContext2D
+    ${gl2ps_test_depends}
   )

IO/ExportOpenGL/module.cmake

+if(ANDROID OR APPLE_IOS) # No GL2PS on mobile
+  return()
+endif()
+
 vtk_module(vtkIOExportOpenGL
   IMPLEMENTS
     vtkIOExport

IO/ExportOpenGL2/module.cmake

+if(ANDROID OR APPLE_IOS) # No GL2PS on mobile
+  return()
+endif()
+
 vtk_module(vtkIOExportOpenGL2
   IMPLEMENTS
     vtkIOExport

Rendering/GL2PS/module.cmake

+if(ANDROID OR APPLE_IOS) # No GL2PS on mobile
+  return()
+endif()
+
 vtk_module(vtkRenderingGL2PS
   TCL_NAME vtkRenderingGLtoPS
   BACKEND

Rendering/GL2PSOpenGL2/module.cmake

+if(ANDROID OR APPLE_IOS) # No GL2PS on mobile
+  return()
+endif()
+
 vtk_module(vtkRenderingGL2PSOpenGL2
   TCL_NAME vtkRenderingGLtoPSOpenGLII
   IMPLEMENTS

Rendering/Matplotlib/module.cmake

-if(VTK_RENDERING_BACKEND STREQUAL "OpenGL")
-  set(gl2ps_depends vtkRenderingGL2PS)
+if(ANDROID OR APPLE_IOS)
+  set(gl2ps_depends)
+elseif(VTK_RENDERING_BACKEND STREQUAL "OpenGL")
+  set(gl2ps_depends vtkRenderingGL2PS vtkIOExportOpenGL)
 elseif(VTK_RENDERING_BACKEND STREQUAL "OpenGL2")
-  set(gl2ps_depends vtkRenderingGL2PSOpenGL2)
+  set(gl2ps_depends vtkRenderingGL2PSOpenGL2 vtkIOExportOpenGL2)
 endif()
 
 vtk_module(vtkRenderingMatplotlib
@@ -17,7 +19,6 @@ vtk_module(vtkRenderingMatplotlib
     vtkCommonColor
     vtkInteractionImage
     vtkInteractionWidgets
-    vtkIOExport${VTK_RENDERING_BACKEND}
     vtkIOGeometry
     vtkIOParallel
     vtkTestingRendering

ThirdParty/gl2ps/module.cmake

+if(ANDROID OR APPLE_IOS) # No GL2PS on mobile
+  return()
+endif()
+
 vtk_module(vtkgl2ps
   DEPENDS
     vtkpng