# For Linux
RM     = rm -f
RMDIR  = rm -rf
DEVNULL = /dev/null
ECHOBLANKLINE = echo

#----------------

SYSCONFIG_TOOL         ?= /home/ajit/ti/sysconfig_1.26.2/sysconfig_cli.sh
MSPM0_SDK_INSTALL_DIR ?= $(abspath ../../mspm0-sdk)

CC = "arm-none-eabi-gcc"
LNK = "arm-none-eabi-gcc"

SYSCONFIG_GUI_TOOL = $(dir $(SYSCONFIG_TOOL))sysconfig_gui$(suffix $(SYSCONFIG_TOOL))
SYSCFG_CMD_STUB = $(SYSCONFIG_TOOL) --compiler gcc --product $(MSPM0_SDK_INSTALL_DIR)/.metadata/product.json
SYSCFG_GUI_CMD_STUB = $(SYSCONFIG_GUI_TOOL) --compiler gcc --product $(MSPM0_SDK_INSTALL_DIR)/.metadata/product.json
SYSCFG_FILES := $(shell $(SYSCFG_CMD_STUB) --listGeneratedFiles --listReferencedFiles --output . empty.syscfg)

SYSCFG_C_FILES = $(filter %.c,$(SYSCFG_FILES))
SYSCFG_H_FILES = $(filter %.h,$(SYSCFG_FILES))
SYSCFG_OPT_FILES = $(filter %.opt,$(SYSCFG_FILES))

OBJECTS = empty.obj $(patsubst %.c,%.obj,$(notdir $(SYSCFG_C_FILES)))
NAME = empty

CFLAGS += -I. \
    $(addprefix @,$(SYSCFG_OPT_FILES)) \
    -O2 \
    @device.opt \
    "-I$(MSPM0_SDK_INSTALL_DIR)/source/third_party/CMSIS/Core/Include" \
    "-I$(MSPM0_SDK_INSTALL_DIR)/source" \
    -mcpu=cortex-m0plus \
    -march=armv6-m \
    -mthumb \
    -std=c99 \
    -mfloat-abi=soft \
    -ffunction-sections \
    -fdata-sections \
    -g \
    -gstrict-dwarf \
    -Wall \
    --specs=nano.specs

LFLAGS += "-L$(MSPM0_SDK_INSTALL_DIR)/source/ti/driverlib/lib/gcc/m0p/mspm0g1x0x_g3x0x" \
    -nostartfiles \
    -Tdevice.lds.genlibs \
    -l:driverlib.a \
    -Wl,-T,device_linker.lds \
    "-Wl,-Map,$(NAME).map" \
    "-L$(MSPM0_SDK_INSTALL_DIR)/source" \
    -L.. \
    -march=armv6-m \
    -mthumb \
    -static \
    -Wl,--gc-sections \
    "-L/usr/lib/gcc/arm-none-eabi/14.2.1/thumb/nofp" \
    -lgcc \
    -lc \
    -lm \
    --specs=nano.specs \
    --specs=nosys.specs

all: $(NAME).out

.INTERMEDIATE: syscfg
$(SYSCFG_FILES): syscfg
	@ echo generation complete

syscfg: empty.syscfg
	@ echo Generating configuration files...
	@ $(SYSCFG_CMD_STUB) --output $(@D) $<


# Helpful hint that the user needs to use a standalone SysConfig installation
$(SYSCONFIG_GUI_TOOL):
	$(error $(dir $(SYSCONFIG_TOOL)) does not contain the GUI framework \
        necessary to launch the SysConfig GUI.  Please set SYSCONFIG_TOOL \
        (in your SDK's imports.mak) to a standalone SysConfig installation \
        rather than one inside CCS)

syscfg-gui: empty.syscfg $(SYSCONFIG_GUI_TOOL)
	@ echo Opening SysConfig GUI
	@ $(SYSCFG_GUI_CMD_STUB) $<

define C_RULE
$(basename $(notdir $(1))).obj: $(1) $(SYSCFG_H_FILES)
	@ echo Building $$@
	@ $(CC) $(CFLAGS) $$< -c -o $$@
endef

$(foreach c_file,$(SYSCFG_C_FILES),$(eval $(call C_RULE,$(c_file))))

empty.obj: src/main.c $(SYSCFG_H_FILES)
	@ echo Building $@
	@ $(CC) $(CFLAGS) $< -c -o $@

$(NAME).out: $(OBJECTS)
	@ echo linking $@
	@ $(LNK)  $(OBJECTS)  $(LFLAGS) -o $(NAME).out

clean:
	@ echo Cleaning...
	@ $(RM) $(OBJECTS) > $(DEVNULL) 2>&1
	@ $(RM) $(NAME).out > $(DEVNULL) 2>&1
	@ $(RM) $(NAME).map > $(DEVNULL) 2>&1
	@ $(RM) $(SYSCFG_FILES)> $(DEVNULL) 2>&1