message: gnu make: look for sundials libraries in lib instead of lib64
diff: @@ -193,7 +193,7 @@ POSIX_CLOCKS_LIB = -lrt
  # and modify cmake variables for hypre for sundials
  SUNDIALS_DIR = @MFEM_DIR@/../sundials-5.0.0/instdir
  SUNDIALS_OPT = -I$(SUNDIALS_DIR)/include
  -SUNDIALS_LIB = $(XLINKER)-rpath,$(SUNDIALS_DIR)/lib64 -L$(SUNDIALS_DIR)/lib64\
  +SUNDIALS_LIB = $(XLINKER)-rpath,$(SUNDIALS_DIR)/lib -L$(SUNDIALS_DIR)/lib\
  -lsundials_arkode -lsundials_cvodes -lsundials_nvecserial -lsundials_kinsol
  ifeq ($(MFEM_USE_MPI),YES)
  