CC = arm-none-eabi-gcc
SIZE = arm-none-eabi-size
OBJCOPY = arm-none-eabi-objcopy

COMMON_FLAGS = \
 -mcpu=cortex-m33 \
 -mthumb \
 -mfpu=fpv5-sp-d16 \
 -mfloat-abi=hard \
 -std=c99 \
 -Wall \
 -Wextra \
 -Os \
 -fdata-sections \
 -ffunction-sections \
 -fomit-frame-pointer \
 -imacros sl_gcc_preinclude.h \
 -mcmse \
 -g

DEFINES = -DEFR32MG21A020F768IM32

INCLUDE += -I include -I../../platform/CMSIS/Core/Include \
 -I../../platform/Device/SiliconLabs/EFR32MG21/Include \
 -I../../platform/common/inc \
 -I ../../platform/common/toolchain/inc \
 -I ../../platform/emlib/inc


CFLAGS := $(COMMON_FLAGS) $(INCLUDE) $(DEFINES)

SUBMAKEFILES := emlib.mk
SOURCES := ../../platform/Device/SiliconLabs/EFR32MG21/Source/system_efr32mg21.c \
src/main.c


BUILD_DIR  := build
TARGET_DIR := build_output

#nosys.specs are required for printf
LDFLAGS =  \
 -mcpu=cortex-m33 \
 -mthumb \
 -mfpu=fpv5-sp-d16 \
 -mfloat-abi=hard \
 -T"linker_script/efr32mg21.ld" \
 --specs=nano.specs \
 --specs=nosys.specs \
 -Xlinker -Map=$(TARGET_DIR)/main.map \
 -Wl,--gc-sections
 
# Startup file
LDLIBS := ../../platform/Device/SiliconLabs/EFR32MG21/Source/GCC/startup_efr32mg21.S

###########

GROUP_START =-Wl,--start-group
GROUP_END =-Wl,--end-group

PROJECT_LIBS = \
 -lgcc \
 -lc \
 -lm \
 -lnosys

LIBS += $(GROUP_START) $(PROJECT_LIBS) $(GROUP_END)

TGT_LDFLAGS += $(LIBS)
##########

TARGET := main.elf

size: $(TARGET_DIR)/main.elf
	$(SIZE) $(TARGET_DIR)/main.elf