# Makefile

# Host and Epiphany application destination
DEST	:= bin

# Host source and object folder
HSRC	:= hsrc
HDEST	:= hobj

# Epiphany source, library and object folder
ESRC	:= esrc
EDEST	:= eobj
ELIB	:= lib

# Host application and host objects
HOSTAPP	= $(DEST)/ep_application
HOBJS	= $(HDEST)/buffers.o

# Epiphany applications and common objects
EPAPPS	= $(DEST)/Data_Generator.srec $(DEST)/Weight_Generator.srec
ECOMMON	= $(EDEST)/dol.o

# Epiphany build flags
CC	= e-gcc
OBJCOPY	= e-objcopy
CFLAGS	= -O2 -falign-loops=8 -falign-functions=8 -Wall -Ilib
LFLAGS	= -T$(EPIPHANY_HOME)/bsps/current/fast.ldf -le-lib
OCFLAGS	= -R .shared_dram -R .data_bank3

# Host build flags
HOSTCC	= gcc
HCFLAGS	= -I$(EPIPHANY_HOME)/tools/host/include -std=c99 -Wall
HLFLAGS	= -L$(EPIPHANY_HOME)/tools/host/lib -le-hal

# Global rules
.PHONY: all run host cores clean
all: run

host: $(HOSTAPP)

cores: $(EPAPPS)

run: host cores
	@echo -e "\tRUN"
	@sudo LD_LIBRARY_PATH=$(LD_LIBRARY_PATH) \
	      EPIPHANY_HDF=$(EPIPHANY_HDF) \
	      $(HOSTAPP)

clean:
	@echo -e "\tCLEAN"
	@rm -v -f $(HOSTAPP) $(EPAPPS) $(EDEST)/* $(HDEST)/*

# Host rules
$(HOSTAPP): $(HOBJS)
	@echo -e "\t(HOST)     LINK\t$@"
	@$(HOSTCC) -o $@ $^ $(HLFLAGS)

$(HDEST)/%.o: $(HSRC)/%.c
	@echo -e "\t(HOST)     CC\t$@"
	@$(HOSTCC) $(HCFLAGS) -c -o $@ $^

# Epiphany rules
$(DEST)/%.srec: $(EDEST)/%.elf
	@echo -e "\t(EPIPHANY) OBJCOPY $@"
	@$(OBJCOPY) $(OCFLAGS) --output-target srec --srec-forceS3 $^ $@

$(EDEST)/%.elf: $(ECOMMON) $(EDEST)/%.o
	@echo -e "\t(EPIPHANY) LINK\t$@"
	@$(CC) -o $@ $^ $(LFLAGS)

$(EDEST)/%.o: $(ESRC)/%.c
	@echo -e "\t(EPIPHANY) CC\t$@"
	@$(CC) $(CFLAGS) -c -o $@ $^

$(EDEST)/%.o: $(ELIB)/%.c
	@echo -e "\t(EPIPHANY) CC\t$@"
	@$(CC) $(CFLAGS) -c -o $@ $^