# Selecting Core
CORTEX_M=4

# Use newlib-nano. To disable it, specify USE_NANO=
USE_NANO=--specs=nano.specs

# Use seimhosting or not
USE_SEMIHOST=--specs=rdimon.specs
USE_NOHOST=--specs=nosys.specs

CORE=CM$(CORTEX_M)
BASE=.

# Compiler & Linker
AS=arm-none-eabi-as
AR=arm-none-eabi-ar
CC=arm-none-eabi-gcc
CXX=arm-none-eabi-g++
OBJCOPY=arm-none-eabi-objcopy
OBJDUMP=arm-none-eabi-objdump
SIZE=arm-none-eabi-size

# Options for specific architecture
ARCH_FLAGS=-mthumb -mcpu=cortex-m$(CORTEX_M)

# Startup code
STARTUP=$(BASE)/startup/startup_ARM$(CORE).S

# -Os -flto -ffunction-sections -fdata-sections to compile for code size
CFLAGS=$(ARCH_FLAGS) $(STARTUP_DEFS) -Os -flto -ffunction-sections -fdata-sections
CXXFLAGS=$(CFLAGS)

# Generate debug information
DI=-Wa,-g

# Link for code size
GC=-Wl,--gc-sections

# Create map file
MAP=-Wl,-Map=$(NAME).map