message: Updates the mfem spack package to use the spec compiler
diff: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  ##############################################################################
  from spack import *
  -import glob, string
  +import glob, string, os
  class Mfem(Package):
  """Free, lightweight, scalable C++ library for finite element methods."""
  @@ -126,6 +126,9 @@ class Mfem(Package):
  options = ['PREFIX=%s' % prefix]
  + spack_cxx = os.environ['CXX']
  + options.extend(['MFEM_CXX=%s' % spack_cxx])
  +
  if '+lapack' in spec:
  lapack_lib = (spec['lapack'].libs + spec['blas'].libs).ld_flags # NOQA: ignore=E501
  options.extend([
  