multiple definition of `exodus_unused_symbol_dummy_1' when building VTK 8.2.0

Support
1

I’m trying to build VTK 8.2.0 on Arch Linux on a Steam Deck, in hopes of using it with an Azure Kinect for photogrammetry… it’s been QUITE a journey getting all the right dependencies installed, but I’ve finally hit an error that seems to be related to VTK itself, or at least something it comes bundled with:

[ 89%] Linking C shared library ../../../lib/libvtkexodusII-8.2.so
/usr/bin/ld: CMakeFiles/vtkexodusII.dir/src/ex_open_par.c.o:/home/deck/projects/VTK-8.2.0/ThirdParty/exodusII/vtkexodusII/src/ex_open_par.c:477: multiple definition of `exodus_unused_symbol_dummy_1'; CMakeFiles/vtkexodusII.dir/src/ex_create_par.c.o:/home/deck/projects/VTK-8.2.0/ThirdParty/exodusII/vtkexodusII/src/ex_create_par.c:617: first defined here
collect2: error: ld returned 1 exit status
make[2]: *** [ThirdParty/exodusII/vtkexodusII/CMakeFiles/vtkexodusII.dir/build.make:4436: lib/libvtkexodusII-8.2.so.1] Error 1
make[1]: *** [CMakeFiles/Makefile2:5607: ThirdParty/exodusII/vtkexodusII/CMakeFiles/vtkexodusII.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

Googling turned up this thread: https://gitlab.kitware.com/vtk/vtk/-/issues/17774 which suggests that this is fixed already? Does anyone have any idea why it would still be happening for me?

2

Because it was fixed in 9.0, not any (released) version of 8.2. Looking at the MR that fixed it, it did not go into the 8.2 maintenance branch either.

3

Super easy to fix - go to ThirdParty/exodusII/vtkexodusII/src/ex_create_par.c and ThirdParty/exodusII/vtkexodusII/src/ex_open_par.c and replace

const char exodus_unused_symbol_dummy_1;

with

const char exodus_unused_symbol_dummy_ex_create_par;

should solve your compile issues!

You can also go to ThirdParty/exodusII/update.sh and change the tag to readonly tag="for/vtk-20200128-7.24f-v2019-12-18"

4

That worked, thank you!