DOLFIN demos fails to run in dev-env container

[Johannes Ring]

Maybe this is a bug in DOLFIN, but I get the following error when running the Poisson demo in the dev-env container:

Solving linear variational problem.
Generic Warning: In /build/buildd/vtk6-6.0.0/Rendering/Core/vtkTextMapper.cxx, line 21
Error: no override found for 'vtkTextMapper'.

Segmentation fault

The error can be reproduced by first starting the dev-env Docker container:

docker run -t -i fenicsproject/dev-env

Then, Inside the Docker container, run:

$ update_fenics
$ python build/share/dolfin/demo/documented/poisson/python/demo_poisson.py

The same error happens for the C++ demo.

[Prof Garth Wells]

I get this too, even with export DOLFIN_NOPLOT=1.

On other remote systems with X, the failure is less than elegant.

The VTK version (6.0) is rather old now.

[Johannes Ring]

I found that is was working if I replaced the part for finding VTK in CMakeLists.txt, that is

find_package(VTK HINTS ${VTK_DIR} $ENV{VTK_DIR} COMPONENTS vtkViewsCore   
  vtkRenderingCore vtkRenderingLabel vtkFiltersTexture vtkRenderingOpenGL 
  NO_MODULE)                                                              

with this:

find_package(VTK HINTS ${VTK_DIR} $ENV{VTK_DIR} NO_MODULE)

After a bit more digging, I found that the missing component was vtkRenderingFreeTypeOpenGL.

@garth-wells: Is it okay if I just add this in CMakeLists.txt and UseDOLFIN.cmake.in and push to master?

diff --git a/CMakeLists.txt b/CMakeLists.txt
index df08b62..5480add 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -587,6 +587,7 @@ endif()
 if (DOLFIN_ENABLE_VTK)
   find_package(VTK HINTS ${VTK_DIR} $ENV{VTK_DIR} COMPONENTS vtkViewsCore
     vtkRenderingCore vtkRenderingLabel vtkFiltersTexture vtkRenderingOpenGL
+    vtkRenderingFreeTypeOpenGL
     NO_MODULE)
   set(VTK_VERSION "${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}")
   if (VTK_FOUND)
diff --git a/cmake/templates/UseDOLFIN.cmake.in b/cmake/templates/UseDOLFIN.cmake.in
index e6f7276..136818e 100644
--- a/cmake/templates/UseDOLFIN.cmake.in
+++ b/cmake/templates/UseDOLFIN.cmake.in
@@ -14,6 +14,7 @@ if (NOT DOLFIN_USE_FILE_INCLUDED)
   if (@VTK_FOUND@)
     find_package(VTK HINTS ${VTK_DIR} $ENV{VTK_DIR} COMPONENTS vtkViewsCore
       vtkRenderingCore vtkRenderingLabel vtkFiltersTexture vtkRenderingOpenGL
+      vtkRenderingFreeTypeOpenGL
       NO_MODULE QUIET)
     if (VTK_FOUND)
       include(${VTK_USE_FILE})

[Prof Garth Wells]

@johannes_ring Looks good to me, so go ahead and push.

We used to import all VTK modules which is huge. I largely had to guess to figure out which modules we actually needed.

[Johannes Ring]

Yes, it is difficult to know which modules are needed. I had to try a few times before I found the missing module.

[Johannes Ring]

Fixed in DOLFIN (0bd93e).

[Prof Garth Wells]

Re-opening, see https://bitbucket.org/fenics-project/dolfin/commits/0bd93edb7b4658310bdaab3fd9a2a6b1.

[Johannes Ring]

The fix in ad2565 (in DOLFIN) works with the VTK package (version 6.0.0) in Ubuntu 14.04.