# ethersex project specific defaults, each can be overridden in config.mk
F_CPU = 20000000UL
MCU = atmega644

CC=avr-gcc
AR=avr-ar
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
AS = avr-as
CP = cp
RM = rm -f
AVRDUDE = avrdude
AVRDUDE_BAUDRATE = 115200
SIZE = avr-size
STRIP = avr-strip

HOSTCC := gcc
export HOSTCC

LIBS = -lm

# flags for the compiler
CFLAGS ?= -Wall -W -Wno-unused-parameter -Wno-sign-compare
CFLAGS += -g -Os -std=gnu99 -fgnu89-inline -D_XOPEN_SOURCE=600 -DNDEBUG

#############################################################################
#Settings for Simulator build

#ugly hack to define a newline (yes, there are two blank lines, on purpose!!)
define n


endef

OSTYPE = $(shell uname)
MACHINE = $(shell uname -m)

ifeq ($(findstring CYGWIN,$(OSTYPE)),CYGWIN)
  CFLAGS_SIM  = -g -Wall -pedantic -std=c99 -O0 -D_WIN32 -D_XOPEN_SOURCE=600
  ifeq ($(MACHINE),x86_64)
    LDFLAGS_SIM = -T ld_scripts/i386pep.x
  else
    LDFLAGS_SIM = -T ld_scripts/i386pe.x
  endif
  LIBS_SIM    = -lgdi32 -lwinmm -lm
else
  ifeq ($(OSTYPE),FreeBSD)
    CFLAGS_SIM  = -g -I/usr/local/include -Wall -pedantic -std=c99 -O0 -D_XOPEN_SOURCE=600
    ifeq ($(MACHINE),amd64)
      LDFLAGS_SIM = -L/usr/local/lib -T ld_scripts/elf_x86_64_fbsd.x
    else
      LDFLAGS_SIM = -L/usr/local/lib -T ld_scripts/elf_i386_fbsd.x
    endif
    LIBS_SIM = -lglut -lpthread -lGL -lGLU -lm
  else
    ifeq ($(OSTYPE),Linux)
      CFLAGS_SIM  = -g -Wall -pedantic -std=c99 -O0 -D_XOPEN_SOURCE=600
      ifeq ($(MACHINE),x86_64)
        LDFLAGS_SIM = -T ld_scripts/elf_x86_64.x
      else
        LDFLAGS_SIM = -T ld_scripts/elf_i386.x
      endif
      LIBS_SIM = -lglut -lpthread -lGL -lGLU -lm
    else
      ($(error $(n)$(n)Simulator build is not supported on your system.$(n)$(n)\
Currently supported platforms:$(n) \
  Linux on x86 and amd64$(n) \
  FreeBSD on x86 and amd64$(n) \
  Windows (through Cygwin) on x86 and amd64)
    endif
  endif
endif

##############################################################################
# the default target
$(TARGET):

##############################################################################
# include user's config.mk file

config.mk: 
	@echo "# Put your own config here!" > $@
	@echo "#F_CPU = $(F_CPU)" >> $@
	@echo "#MCU = $(MCU)" >> $@
	@echo "created default config.mk, tune your settings there!"
-include config.mk


##############################################################################
# configure load address for bootloader, if enabled
#
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),mrproper)
ifneq ($(MAKECMDGOALS),menuconfig)  

include $(MAKETOPDIR)/.config

CPPFLAGS += -DF_CPU=$(FREQ)UL -mmcu=$(MCU)

# flags for the linker
ifeq ($(findstring atmega128,$(MCU)),atmega128)
  LDFLAGS += -T ld_scripts/avr51.x -Wl,-Map,image.map -mmcu=$(MCU)
else
  LDFLAGS += -T ld_scripts/avr5.x -Wl,-Map,image.map -mmcu=$(MCU)
endif

endif # MAKECMDGOALS!=menuconfig
endif # MAKECMDGOALS!=mrproper
endif # MAKECMDGOALS!=clean

ifeq ($(BOOTLOADER_SUPPORT),y)  
  LDFLAGS += -Wl,--section-start=.text=0xE000
  CFLAGS  += -mcall-prologues
endif


%.s: %.c
	$(CC) -o $@ -O0 $(CPPFLAGS) -S $<

%.E: %.c
	$(CC) -o $@ -O0 $(CPPFLAGS) -C -E -dD $<