Fix Ikva's model_data.cc creation (#324)

* Now only create Ikva's model_data.cc if it doesn't exist yet

* Also only create LCE-benchmark's model_data.cc if it doesn't exist yet

Author: CNugteren

larq_compute_engine/ikva/runtime/Makefile.inc

@@ -36,4 +36,4 @@ $(eval $(call microlite_test,ikva_runtime,\
 $(IKVA_CORE_SRCS) $(IKVA_RUNTIME_SRCS), $(IKVA_CORE_HDRS) $(IKVA_RUNTIME_HDRS)))
 
 $(LCE_DIR)/ikva/runtime/model_data.cc: $(LCE_DIR)/ikva/runtime/model_data_example.cc
-	cp $< $@
+	if [ ! -f $@ ]; then cp $< $@; fi

larq_compute_engine/micro/build_make/lce_sources.mk

@@ -118,9 +118,9 @@ $(LCE_RELATIVE_DIR)/larq_compute_engine/core/profiler.cc: $(LCE_RELATIVE_DIR)/la
 
 # Required for lce_benchmark
 $(LCE_RELATIVE_DIR)/larq_compute_engine/micro/examples/lce_benchmark/model_data.cc: $(LCE_RELATIVE_DIR)/larq_compute_engine/micro/examples/lce_benchmark/model_data_example.cc
-	cp $< $@
+	if [ ! -f $@ ]; then cp $< $@; fi
 
 $(LCE_RELATIVE_DIR)/larq_compute_engine/ikva/runtime/model_data.cc: $(LCE_RELATIVE_DIR)/larq_compute_engine/ikva/runtime/model_data_example.cc
-	cp $< $@
+	if [ ! -f $@ ]; then cp $< $@; fi
 
 include $(LCE_TF_GEN_DIR)/Makefile.mk

larq_compute_engine/micro/examples/lce_benchmark/Makefile.inc

@@ -17,5 +17,4 @@ include $(wildcard $(LCE_DIR)/micro/examples/lce_benchmark/*/Makefile.inc)
 $(eval $(call microlite_test,lce_benchmark,$(LCE_BENCHMARK_SRCS),$(LCE_BENCHMARK_HDRS)))
 
 $(LCE_DIR)/micro/examples/lce_benchmark/model_data.cc: $(LCE_DIR)/micro/examples/lce_benchmark/model_data_example.cc
-	cp $< $@
-
+	if [ ! -f $@ ]; then cp $< $@; fi