NAME=edfa
SHELL=cmd
ARCH=arm-none-eabi
CC=$(ARCH)-gcc
OBJCOPY=$(ARCH)-objcopy
SIZE=$(ARCH)-size
ELF=$(NAME).elf
BIN=$(NAME).bin
TXT=$(NAME).txt
MAP=$(NAME).map
FNTIMG=$(wildcard font/*.pcx)
BMPIMG=$(wildcard bmp/*.bmp)
FNTSRC=$(FNTIMG:.pcx=.c)
BMPSRC=$(BMPIMG:.bmp=.c)
RESHDR=$(addprefix src-, $(addsuffix .c, $(wildcard res/*)))
SRC=$(wildcard src/*.c lwip/core/*.c lwip/core/ipv4/*.c lwip/netif/*.c lwip/apps/sntp/*.c bmp/*.c) $(FNTSRC) $(BMPSRC)
OBJ=$(SRC:.c=.o)
DEP=$(SRC:.c=.d)
INC=-Iinc -Ilwip/include
CFLAGS=-mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -gdwarf-2 -Wall -fno-strict-aliasing -std=gnu11
CFLAGS+=-DLC_INCLUDE=\"lc-addrlabels.h\" -DARM_MATH_CM4=1 -D__FPU_PRESENT=1
LDFLAGS=-T stm32f407.ld -Wl,-Map=$(MAP),--gc-sections -fwhole-program -static -lc -lm -lnosys

ifeq ($(DEBUG), 1)
    CFLAGS += -O0
else
    CFLAGS += -DNDEBUG -Os
    CFLAGS += -flto -fno-fat-lto-objects
endif

.PHONY: all clean rev

.SECONDARY: $(FNTSRC) $(BMPSRC) $(RESHDR)

all: $(TXT)

rev:
	@echo  REV inc/svnvars.h
	@SubWCRev . inc/svnvars.tmpl inc/svnvars.h > nul

src-res/%.c: res/%
	@echo  RES $<
	@gawk -f util/bin2c.awk -v BINMODE=1 -v varname=res_$(basename $*) < $< > $@

%.c: %.pcx
	@echo FONT $<
	@"util/pcx2font3bpp" $< $(basename $(notdir $<)) > $@

%.c: %.bmp
	@echo  BMP $<
	@gawk -f util/bmp2c.awk -v BINMODE=1 -v varname=bmp_$(basename $(notdir $*)) < $< > $@

%.o: %.c
	@echo   CC $<
	@$(CC) $< -c -MMD $(CFLAGS) $(INC) -o $@

$(OBJ): | rev

src/contents.o: $(RESHDR)

$(ELF): $(OBJ)
	@echo LINK $@
	@$(CC) $^ $(CFLAGS) $(LDFLAGS) -o $@
	@echo SIZE $@
	@$(SIZE) $@

$(BIN): $(ELF)
	@echo  BIN $@
	@$(OBJCOPY) -O binary -j .text -j .data $^ $@
# if necessary, add padding to make the size a multiple of 4 bytes
	@util/srec_cat $@ -bin -fill 0xFF -over $@ -bin -range-pad 4 -o $@ -bin
# insert length and append MD5
	@util/srec_cat $@ -bin -ex 0x1C 0x20 -len-l-e 0x1C 4 1 -md5 -max-addr $@ -bin -o $@ -bin

$(TXT): $(BIN)
	@echo  TXT $@
	@gawk -f util/base64enc.awk -v BINMODE=1 < $< > $@

clean:
	@echo CLEAN
	@del /q $(subst /,\,$(ELF) $(BIN) $(TXT) $(MAP) $(OBJ) $(FNTSRC) $(BMPSRC) $(RESHDR) $(DEP) inc/svnvars.h) 2>nul

-include $(DEP)