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Incompatible swig versions detected in conda installation

+1 vote

I fresh installed fenics 2016.2 using conda, and when I run a demo script I encountered this error

RuntimeError:

*** -------------------------------------------------------------------------
*** DOLFIN encountered an error. If you are not able to resolve this issue
*** using the information listed below, you can ask for help at
***
***     fenics-support@googlegroups.com
***
*** Remember to include the error message listed below and, if possible,
*** include a *minimal* running example to reproduce the error.
***
*** -------------------------------------------------------------------------
*** Error:   Unable to compiling extension module.
*** Reason:  Incompatible swig versions detected. DOLFIN swig version is not the same as extension module swig version: '3.0.10' != '3.0.11' .
*** Where:   This error was encountered inside compilemodule.py.
*** Process: 0
***
*** DOLFIN version: 2016.2.0
*** Git changeset:
*** -------------------------------------------------------------------------

I googled but found nothing helpful. It appears to be a bug in the source code.

asked Jan 3, 2017 by noir FEniCS Novice (160 points)

1 Answer

+1 vote
 
Best answer

Try to install SWIG version 3.0.10:

conda install swig=3.0.10

Then run instant-clean and try again.

answered Jan 4, 2017 by johannr FEniCS Expert (17,350 points)
selected Jan 4, 2017 by noir

I tried that, but that does not help.

commented Jan 4, 2017 by noir FEniCS Novice (160 points)

Is version 3.0.11 still installed? What do you get when you run swig -version?

commented Jan 4, 2017 by johannr FEniCS Expert (17,350 points) 
SWIG Version 3.0.10

Compiled with clang++ [x86_64-apple-darwin13.4.0]

Configured options: +pcre
commented Jan 4, 2017 by noir FEniCS Novice (160 points)

Try running instant-clean. Is the error still the same?

commented Jan 4, 2017 by johannr FEniCS Expert (17,350 points)

This time it runs smoothly without error. Thanks.

commented Jan 4, 2017 by noir FEniCS Novice (160 points)
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