Re: [Libmesh-users] libMesh make fatal error-(unsupported/Eigen/IterativeSolvers: No such file or directory)

[Roy S. <roy...@ic...>]

On Mon, 30 Oct 2017, Braden Frigoletto wrote:

> Notice the highlighted portion in green shows that eigen is enabled:

Is there a message (earlier in the config log, I don't think we
thought to put it in the summary) saying:

external Eigen header files not found, using Eigen from ./contrib

I'm wondering whether you have an incompatible Eigen version in
/usr/include/ (or /usr/include/eigen3, or $EIGEN_INC, or... we check a
lot of places), something our eigen.m4 detected as existing but didn't
detect as incompatible.  If so then configure wouldn't have added the
contrib Eigen to your include path.
---
Roy