OPM/opm-autodiff — pull request #15 by bska (2013-07-09 11:33:37+00:00)
Title: Exclude examples/sim_simple.cpp if UMFPACK is unavailable

Not all systems provide UMFPACK so even if Eigen provides the required
bindings, we should not assume that the underlying library and/or
headers are available. Currently, only examples/sim_simple.cpp uses
UMFPACK unconditionally, so the simplest solution is to exclude that
example unless UMFPACK is available.