# A spec for using Tivaware's makefiles

# Top-level concerns.
PROJECT = controller
MCU = TM4C123GH6PM

# Utilities.
CC = arm-none-eabi-gcc
LD = arm-none-eabi-ld
OBJCOPY = arm-none-eabi-objcopy
RM      = rm -rf
MKDIR   = @mkdir -p $(@D)

# Custom/TI/build resource locations.
SRCS = $(wildcard src/*.c) \
	$(wildcard libs/*.c)
OBJ = obj/
OBJS = $(addprefix $(OBJ),$(notdir $(SRCS:.c=.o)))
LD_SCRIPT = ld/$(MCU).ld
IPATH = /home/dnw/Code/TivaC/libs/driverlib

# Flags.
CFLAGS = -mthumb -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections \
	-fdata-sections -MD  -std=c2x -Wall -Wextra -Werror -DPART_${MCU} -c -Os -Dgcc -ggdb
CFLAGS += ${patsubst %,-I%,${subst :, ,${IPATH}}} -iquote inc

# Compiler/standard resource locations.
LIBGCC := ${shell ${CC} ${CFLAGS} -print-libgcc-file-name}
LIBC := ${shell ${CC} ${CFLAGS} -print-file-name=libc.a}
LIBM := ${shell ${CC} ${CFLAGS} -print-file-name=libm.a}

# More flags.
LDFLAGS = -T $(LD_SCRIPT) -e Reset_Handler --gc-sections '${LIBGCC}' '${LIBC}' '${LIBM}'





# Targets.
all: bin/$(PROJECT).bin

$(OBJ)%.o: src/%.c
	$(MKDIR)
	$(CC) -o $@ $^ $(CFLAGS)

$(OBJ)%.o: libs/%.c
	$(MKDIR)
	$(CC) -o $@ $^ $(CFLAGS)

$(info $$PROJECT is [${PROJECT}])
bin/$(PROJECT).elf: $(OBJS)
	$(MKDIR)
	$(LD) -o $@ $^ $(LDFLAGS)

bin/$(PROJECT).bin: bin/$(PROJECT).elf
	$(OBJCOPY) -O binary $< $@

clean:
	-$(RM) obj
	-$(RM) bin

.PHONY: all clean