Fix the issue #32041: Fix riscv32_mcu link failure in build period.

tensorflow/lite/experimental/micro/arduino/abi.cc

@@ -0,0 +1,16 @@
+/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+void* __dso_handle;

tensorflow/lite/experimental/micro/examples/hello_world/Makefile.inc

@@ -1,4 +1,4 @@
-HELLO_WORLD_TEST_SRCS := \
+HELLO_WORLD_TEST_SRCS += \
 tensorflow/lite/experimental/micro/examples/hello_world/hello_world_test.cc \
 tensorflow/lite/experimental/micro/examples/hello_world/sine_model_data.cc
 
@@ -13,12 +13,13 @@ OUTPUT_HANDLER_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/hello_world/output_handler.h \
 tensorflow/lite/experimental/micro/examples/hello_world/constants.h
 
-HELLO_WORLD_SRCS := \
+HELLO_WORLD_SRCS += \
 tensorflow/lite/experimental/micro/examples/hello_world/main.cc \
 tensorflow/lite/experimental/micro/examples/hello_world/main_functions.cc \
 tensorflow/lite/experimental/micro/examples/hello_world/sine_model_data.cc \
 tensorflow/lite/experimental/micro/examples/hello_world/output_handler.cc \
-tensorflow/lite/experimental/micro/examples/hello_world/constants.cc
+tensorflow/lite/experimental/micro/examples/hello_world/constants.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc
 
 HELLO_WORLD_HDRS := \
 tensorflow/lite/experimental/micro/examples/hello_world/sine_model_data.h \

tensorflow/lite/experimental/micro/examples/magic_wand/Makefile.inc

@@ -37,11 +37,12 @@ GESTURE_PREDICTOR_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/magic_wand/constants.h \
 tensorflow/lite/experimental/micro/examples/magic_wand/gesture_predictor.h \
 
-magic_wand_TEST_SRCS := \
+magic_wand_TEST_SRCS += \
 tensorflow/lite/experimental/micro/examples/magic_wand/magic_wand_test.cc \
 tensorflow/lite/experimental/micro/examples/magic_wand/magic_wand_model_data.cc \
 tensorflow/lite/experimental/micro/examples/magic_wand/angle_micro_features_data.cc \
-tensorflow/lite/experimental/micro/examples/magic_wand/circle_micro_features_data.cc
+tensorflow/lite/experimental/micro/examples/magic_wand/circle_micro_features_data.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc
 
 magic_wand_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/magic_wand/magic_wand_model_data.h \
@@ -55,7 +56,8 @@ tensorflow/lite/experimental/micro/examples/magic_wand/constants.cc \
 tensorflow/lite/experimental/micro/examples/magic_wand/magic_wand_model_data.cc \
 tensorflow/lite/experimental/micro/examples/magic_wand/accelerometer_handler.cc \
 tensorflow/lite/experimental/micro/examples/magic_wand/gesture_predictor.cc \
-tensorflow/lite/experimental/micro/examples/magic_wand/output_handler.cc
+tensorflow/lite/experimental/micro/examples/magic_wand/output_handler.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc
 
 magic_wand_HDRS := \
 tensorflow/lite/experimental/micro/examples/magic_wand/main_functions.h \

tensorflow/lite/experimental/micro/examples/micro_speech/Makefile.inc

@@ -26,16 +26,17 @@ third_party/kissfft/kiss_fft.h \
 third_party/kissfft/_kiss_fft_guts.h \
 third_party/kissfft/tools/kiss_fftr.h
 
-MICRO_SPEECH_TEST_SRCS := \
+MICRO_SPEECH_TEST_SRCS += \
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_speech_test.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/tiny_conv_micro_features_model_data.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/no_micro_features_data.cc \
-tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/yes_micro_features_data.cc
+tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/yes_micro_features_data.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc
 
 MICRO_SPEECH_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/tiny_conv_micro_features_model_data.h \
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/no_micro_features_data.h \
-tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/yes_micro_features_data.h \
+tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/yes_micro_features_data.h
 
 SIMPLE_FEATURES_GENERATOR_TEST_SRCS := \
 tensorflow/lite/experimental/micro/examples/micro_speech/simple_features/simple_features_generator.cc \
@@ -183,7 +184,7 @@ tensorflow/lite/experimental/micro/examples/micro_speech/command_responder.cc
 COMMAND_RESPONDER_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/micro_speech/command_responder.h
 
-MICRO_SPEECH_SRCS := \
+MICRO_SPEECH_SRCS += \
 tensorflow/lite/experimental/micro/examples/micro_speech/main.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/main_functions.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/audio_provider.cc \
@@ -193,6 +194,7 @@ tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/yes_micr
 tensorflow/lite/experimental/micro/examples/micro_speech/micro_features/tiny_conv_micro_features_model_data.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/recognize_commands.cc \
 tensorflow/lite/experimental/micro/examples/micro_speech/command_responder.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc \
 $(MICRO_FEATURES_GENERATOR_SRCS)
 
 MICRO_SPEECH_HDRS := \

tensorflow/lite/experimental/micro/examples/person_detection/Makefile.inc

@@ -8,10 +8,11 @@ person_detection_MODEL_HDRS := \
 tensorflow/lite/experimental/micro/examples/person_detection/model_settings.h \
 tensorflow/lite/experimental/micro/examples/person_detection/person_detect_model_data.h
 
-person_detection_TEST_SRCS := \
+person_detection_TEST_SRCS += \
 tensorflow/lite/experimental/micro/examples/person_detection/person_detection_test.cc \
 $(MAKEFILE_DIR)/downloads/person_model_grayscale/no_person_image_data.cc \
 $(MAKEFILE_DIR)/downloads/person_model_grayscale/person_image_data.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc \
 $(person_detection_MODEL_SRCS)
 
 person_detection_TEST_HDRS := \
@@ -35,11 +36,12 @@ tensorflow/lite/experimental/micro/examples/person_detection/detection_responder
 DETECTION_RESPONDER_TEST_HDRS := \
 tensorflow/lite/experimental/micro/examples/person_detection/detection_responder.h
 
-person_detection_SRCS := \
+person_detection_SRCS += \
 tensorflow/lite/experimental/micro/examples/person_detection/detection_responder.cc \
 tensorflow/lite/experimental/micro/examples/person_detection/image_provider.cc \
 tensorflow/lite/experimental/micro/examples/person_detection/main.cc \
 tensorflow/lite/experimental/micro/examples/person_detection/main_functions.cc \
+tensorflow/lite/experimental/micro/arduino/abi.cc \
 $(person_detection_MODEL_SRCS)
 
 person_detection_HDRS := \

tensorflow/lite/experimental/micro/tools/make/helper_functions.inc

@@ -246,7 +246,7 @@ $(1)_LOCAL_SRCS := $$(call specialize,$$($(1)_LOCAL_SRCS))
 ALL_SRCS += $$($(1)_LOCAL_SRCS)
 $(1)_LOCAL_HDRS := $(3)
 $(1)_LOCAL_OBJS := $$(addprefix $$(OBJDIR), \
-$$(patsubst %.cc,%.o,$$(patsubst %.c,%.o,$$($(1)_LOCAL_SRCS))))
+$$(patsubst %.S,%.o,$$(patsubst %.cc,%.o,$$(patsubst %.c,%.o,$$($(1)_LOCAL_SRCS)))))
 $(1)_BINARY := $$(BINDIR)$(1)
 $$($(1)_BINARY): $$($(1)_LOCAL_OBJS) $$(MICROLITE_LIB_PATH)
 	@mkdir -p $$(dir $$@)

tensorflow/lite/experimental/micro/tools/make/targets/mcu_riscv_makefile.inc

@@ -48,14 +48,30 @@ ifeq ($(TARGET), riscv32_mcu)
 
   MICROLITE_CC_SRCS += \
     $(wildcard tensorflow/lite/experimental/micro/riscv32_mcu/*.cc)
-  MICRO_SPEECH_TEST_SRCS += \
+
+  # Wrap functions
+  MICRO_FE310_LIBWRAP_SRCS += \
     $(wildcard $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/libwrap/sys/*.c) \
-    $(wildcard $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/libwrap/sys/*.cc) \
     $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/libwrap/misc/write_hex.c \
-    $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/libwrap/stdlib/malloc.c \
+    $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/libwrap/stdlib/malloc.c
+
+  MICRO_FE310_BSP_ENV_SRCS += \
     $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/env/start.S \
     $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/env/entry.S \
     $(MAKEFILE_DIR)/downloads/sifive_fe310_lib/bsp/env/freedom-e300-hifive1/init.c
+
+  MICRO_SPEECH_TEST_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+  MICRO_SPEECH_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+
+  HELLO_WORLD_TEST_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+  HELLO_WORLD_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+
+  magic_wand_TEST_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+  magic_wand_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+
+  person_detection_TEST_HDRS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+  person_detection_SRCS += $(MICRO_FE310_LIBWRAP_SRCS) $(MICRO_FE310_BSP_ENV_SRCS)
+
   LIBWRAP_SYMS := malloc free \
                   open lseek read write fstat stat close link unlink \
                   execve fork getpid kill wait \
@@ -76,4 +92,4 @@ ifeq ($(TARGET), riscv32_mcu)
   $(BINDIR)/%.bin: $(BINDIR)/%
 		@mkdir -p $(dir $@)
 		$(OBJCOPY) $< $@ -O binary
-endif
+endif