message: Fix the out-of-source GNU make build in miniapps/hooke
diff: @@ -47,12 +47,13 @@ all: $(MINIAPPS)
  %: %.cpp
  %.o: %.cpp
  -HOOKE_INCLUDES = -I.
  +HOOKE_INCLUDES = $(if $(SRC),-I$(MFEM_DIR))
  hooke: $(HOOKE_OBJ)
  $(MFEM_CXX) $(MFEM_LINK_FLAGS) -o $@ $(HOOKE_OBJ) $(MFEM_LIBS)
  -%.o: $(SRC)%.cpp $(MFEM_LIB_FILE) $(CONFIG_MK)
  +$(HOOKE_OBJ): %.o: $(SRC)%.cpp $(MFEM_LIB_FILE) $(CONFIG_MK)
  + @mkdir -p $(@D)
  $(MFEM_CXX) $(MFEM_FLAGS) $(HOOKE_INCLUDES) -c $< -o $@
  include $(MFEM_TEST_MK)
  