SRC_S += $(SRC_S_IAR)

# Assembly files can be name with upper case .S, convert it to .s
SRC_S := $(SRC_S:.S=.s)

# Due to GCC LTO bug https://bugs.launchpad.net/gcc-arm-embedded/+bug/1747966
# assembly file should be placed first in linking order
# '_asm' suffix is added to object of assembly file
OBJ += $(addprefix $(BUILD)/obj/, $(SRC_S:.s=_asm.o))
OBJ += $(addprefix $(BUILD)/obj/, $(SRC_C:.c=.o))

# Linker script
LDFLAGS += --config $(TOP)/$(LD_FILE_IAR)

# ---------------------------------------
# Rules
# ---------------------------------------

# Compile .c file
$(BUILD)/obj/%.o: %.c
	@echo CC $(notdir $@)
	@$(CC) $(CFLAGS) -c -o $@ $<

# ASM sources lower case .s
$(BUILD)/obj/%_asm.o: %.s
	@echo AS $(notdir $@)
	@$(AS) $(ASFLAGS) -c -o $@ $<

# ASM sources upper case .S
$(BUILD)/obj/%_asm.o: %.S
	@echo AS $(notdir $@)
	@$(AS) $(ASFLAGS) -c -o $@ $<

$(BUILD)/$(PROJECT).bin: $(BUILD)/$(PROJECT).elf
	@echo CREATE $@
	@$(OBJCOPY) --bin $^ $@

$(BUILD)/$(PROJECT).hex: $(BUILD)/$(PROJECT).elf
	@echo CREATE $@
	@$(OBJCOPY) --ihex $^ $@

$(BUILD)/$(PROJECT).elf: $(OBJ)
	@echo LINK $@
	@$(LD) -o $@ $(LDFLAGS) $^