message: Only build when runnable.
diff: @@ -104,6 +104,8 @@ struct Problem: public BakeOff
  BakeOff(assembly,order,N,VDIM,GLL),
  ess_bdr(mesh.bdr_attributes.Max()),
  b(&fes)
  + {
  + if (is_runnable())
  {
  ess_bdr = 1;
  fes.GetEssentialTrueDofs(ess_bdr,ess_tdof_list);
  @@ -124,6 +126,7 @@ struct Problem: public BakeOff
  cg.iterative_mode = false;
  MFEM_DEVICE_SYNC;
  }
  + }
  void setup() override
  {
  @@ -249,6 +252,8 @@ struct Kernel: public BakeOff
  Kernel(AssemblyLevel assembly, int order, int N)
  : BakeOff(assembly,order,N,VDIM,GLL), y(&fes)
  + {
  + if (is_runnable())
  {
  x.Randomize(1);
  a.SetAssemblyLevel(assembly);
  @@ -257,6 +262,7 @@ struct Kernel: public BakeOff
  a.Mult(x, y);
  MFEM_DEVICE_SYNC;
  }
  + }
  void setup() override
  {
  