tree 39482b7d35a913c742c3d72292d6ae30e6372269
parent 12eb389b4ec4113a2260c1a192a1d3f8d1b6a2d3
author Sameer Agarwal <sameeragarwal@google.com> 1409205240 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1409244370 -0700

Expand check for lack of a sparse linear algebra library.

The LinearSolver factory was creating a NULL linear solver
if only Eigen's sparse linear algebra backend was available.

Thanks to Michael Samples and Domink Reitzle for reporting this.

Change-Id: I35e3a6c0fd0da2a31934adb5dfe4cad29577cc73