#######################################################
#                 Soweit fertig!!!                    #
#                                                     #
# On command line:                                    #
#                                                     #
# make all = Make software.                           #
# make clean = Clean out built project files.         #
#                                                     #
# To rebuild project do "make clean" then "make all". #
#                                                     #
#######################################################

# MCU name and submodel
MCU      = arm7tdmi
SUBMDL   = ADuC7020

## Create ROM-Image (final)
RUN_MODE=ROM_RUN
## Create RAM-Image (debugging)
# auch debug-Flags auskommentieren!!!
#RUN_MODE=RAM_RUN

# Target file name (without extension).
TARGET = main

# List C source files here.
SRC = $(TARGET).c irq.c

# List Assembler source files here which must be assembled in ARM-Mode..
ASRCARM = startup.s

## Output format. (can be ihex or binary)
FORMAT = ihex
#FORMAT = binary

# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
OPT = 2

################################################################################
#                                                                              #
#                           hier nichts mehr aendern                           #
#                                                                              #
################################################################################


# Compiler flag to set the C Standard level.
# c89   - "ANSI" C
# gnu89 - c89 plus GCC extensions
# c99   - ISO C99 standard (not yet fully implemented)
# gnu99 - c99 plus GCC extensions
CSTANDARD = -std=gnu99

# Place -D or -U options for C here; -D = #define; -U = Cancel anyprevious definition by -D
CDEFS =  -D$(RUN_MODE)

# Place -D or -U options for ASM here
ADEFS =  -D$(RUN_MODE)

ifdef VECTOR_LOCATION
CDEFS += -D$(VECTOR_LOCATION)
ADEFS += -D$(VECTOR_LOCATION)
endif

###################
# Compiler flags. #
###################
#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and arm-libc documentation
#  -W*...:       warning level (W all)
#  -Wa,...:      tell GCC to pass this to the assembler.
#                Pass option as an option to the assembler.If option contains commas, it is split into multiple options
#                at the commas.
#    -adhlns...: create assembler listing
#
# Flags for C and C++ (arm-elf-gcc/arm-elf-g++)
#CFLAGS = -g$(DEBUG)
CFLAGS += $(CDEFS) $(CINCS)
CFLAGS += -O$(OPT)
CFLAGS += -Wall -Wcast-align -Wimplicit
CFLAGS += -Wpointer-arith -Wswitch
CFLAGS += -Wredundant-decls -Wreturn-type -Wshadow -Wunused
CFLAGS += -Wa,-adhlns=$(subst $(suffix $<),.lst,$<)
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

# flags only for C
CONLYFLAGS += -Wnested-externs
CONLYFLAGS += $(CSTANDARD)

ifneq ($(AT91LIBNOWARN),yes)
#AT91-lib warnings with:
CFLAGS += -Wcast-qual
CONLYFLAGS += -Wmissing-prototypes
CONLYFLAGS += -Wstrict-prototypes
CONLYFLAGS += -Wmissing-declarations
endif

####################
# Assembler flags. #
####################
#  -Wa,...:   tell GCC to pass this to the assembler.
#  -ahlms:    create listing
#  -g$(DEBUG):have the assembler create line number information
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:.S=.lst)
#ASFLAGS += -g$(DEBUG)


#Additional libraries.
MATH_LIB = -lm

#################
# Linker flags. #
#################
#  -Wl,...:     tell GCC to pass this to linker.
#    -Map:      create map file
#    --cref:    add cross reference to  map file
LDFLAGS = -nostartfiles -Wl,-Map=$(TARGET).map,--cref
LDFLAGS += -lc
LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
# -l archive
LDFLAGS += -lc -lgcc
#LDFLAGS += $(CPLUSPLUS_LIB)
#LDFLAGS += $(patsubst %,-L%,$(EXTRA_LIBDIRS))
#LDFLAGS += $(patsubst %,-l%,$(EXTRA_LIBS))

# Set Linker-Script Depending On Selected Memory and Controller
# -T scriptfile; Use scriptfile as the linker script
ifeq ($(RUN_MODE),RAM_RUN)
LDFLAGS +=-T$(SUBMDL)-RAM.ld
else
LDFLAGS +=-T$(SUBMDL)-ROM.ld
endif

#################################
#################################
# Define directories, if needed.
## DIRARM = c:/Programme/GnuARM/
## DIRARMBIN = $(DIRAVR)/bin/
## DIRAVRUTILS = $(DIRAVR)/utils/bin/

# Define programs and commands.
SHELL = sh
CC = arm-elf-gcc
OBJCOPY = arm-elf-objcopy
OBJDUMP = arm-elf-objdump
SIZE = arm-elf-size
NM = arm-elf-nm
REMOVE = rm -f
COPY = cp

###################
# Define Messages #
###################
MSG_ERRORS_NONE = Errors: none
MSG_BEGIN = "-------- begin (mode: $(RUN_MODE)) --------"
MSG_END = --------  end  --------
MSG_SIZE_BEFORE = Size before:
MSG_SIZE_AFTER = Size after:
MSG_FLASH = Creating load file for Flash:
MSG_EXTENDED_LISTING = Creating Extended Listing:
MSG_SYMBOL_TABLE = Creating Symbol Table:
MSG_LINKING = Linking:
MSG_COMPILING = Compiling C:
MSG_COMPILING_ARM = "Compiling C (ARM-only):"
MSG_ASSEMBLING = Assembling:
MSG_ASSEMBLING_ARM = "Assembling (ARM-only):"
MSG_CLEANING = Cleaning project:
MSG_FORMATERROR = Can not handle output-format
MSG_LPC21_RESETREMINDER = You may have to bring the target in bootloader-mode now.

############################
# Define all object files. #
############################
COBJ      = $(SRC:.c=.o)
AOBJ      = $(ASRC:.S=.o)
COBJARM   = $(SRCARM:.c=.o)
AOBJARM   = $(ASRCARM:.S=.o)


# Define all listing files.
LST = $(ASRC:.S=.lst) $(ASRCARM:.S=.lst) $(SRC:.c=.lst) $(SRCARM:.c=.lst)
LST += $(CPPSRC:.cpp=.lst) $(CPPSRCARM:.cpp=.lst)

# Compiler flags to generate dependency files.
### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d

# Combine all necessary flags and optional flags.
# Add target processor to flags.
ALL_CFLAGS  = -mcpu=$(MCU) $(THUMB_IW) -I. $(CFLAGS) $(GENDEPFLAGS)
ALL_ASFLAGS = -mcpu=$(MCU) $(THUMB_IW) -I. $(ASFLAGS)

###################
# Default target. #
###################
all: begin gccversion sizebefore build sizeafter finished end

ifeq ($(FORMAT),ihex)
build: elf hex lss sym
hex: $(TARGET).hex
else
ifeq ($(FORMAT),binary)
build: elf bin lss sym
bin: $(TARGET).bin
else
$(error "$(MSG_FORMATERROR) $(FORMAT)")
endif
endif

elf: $(TARGET).elf
lss: $(TARGET).lss
sym: $(TARGET).sym

# Eye candy.
begin:
	@echo
	@echo $(MSG_BEGIN)

finished:
	@echo $(MSG_ERRORS_NONE)

end:
	@echo $(MSG_END)
	@echo


# Display size of file.
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
ELFSIZE = $(SIZE) -A $(TARGET).elf
sizebefore:
	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi

sizeafter:
	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi


# Display compiler version information.
gccversion :
	@$(CC) --version

######################################
# Creating, Compiling, Linking files #
######################################
# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
	@echo
	@echo $(MSG_FLASH) $@
	$(OBJCOPY) -O $(FORMAT) $< $@

# Create final output file (.bin) from ELF output file.
%.bin: %.elf
	@echo
	@echo $(MSG_FLASH) $@
	$(OBJCOPY) -O $(FORMAT) $< $@


# Create extended listing file from ELF output file.
# testing: option -C
%.lss: %.elf
	@echo
	@echo $(MSG_EXTENDED_LISTING) $@
	$(OBJDUMP) -h -S -C $< > $@


# Create a symbol table from ELF output file.
%.sym: %.elf
	@echo
	@echo $(MSG_SYMBOL_TABLE) $@
	$(NM) -n $< > $@


# Link: create ELF output file from object files.
.SECONDARY : $(TARGET).elf
.PRECIOUS : $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM)
%.elf:  $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM)
	@echo
	@echo $(MSG_LINKING) $@
	@ $(CC) $(THUMB) $(ALL_CFLAGS) $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM) --output $@ $(LDFLAGS)


# Compile: create object files from C source files. ARM/Thumb
$(COBJ) : %.o : %.c
	@echo
	@echo $(MSG_COMPILING) $<
	@ $(CC) -c $(THUMB) $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@


# Compile: create object files from C source files. ARM-only
$(COBJARM) : %.o : %.c
	@echo
	@echo $(MSG_COMPILING_ARM) $<
	@ $(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@


# Assemble: create object files from assembler source files. ARM/Thumb
$(AOBJ) : %.o : %.s
	@echo
	@echo $(MSG_ASSEMBLING) $<
	@ $(CC) -c $(THUMB) $(ALL_ASFLAGS) $< -o $@


# Assemble: create object files from assembler source files. ARM-only
$(AOBJARM) : %.o : %.s
	@echo
	@echo $(MSG_ASSEMBLING_ARM) $<
	@ $(CC) -c $(ALL_ASFLAGS) $< -o $@

##########################
# Target: clean project. #
##########################
clean: begin clean_list finished end


clean_list :
	@echo
	@echo $(MSG_CLEANING)
	$(REMOVE) $(TARGET).hex
	$(REMOVE) $(TARGET).bin
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).elf
	$(REMOVE) $(TARGET).map
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).a90
	$(REMOVE) $(TARGET).sym
	$(REMOVE) $(TARGET).lnk
	$(REMOVE) $(TARGET).lss
	$(REMOVE) $(COBJ)
	$(REMOVE) $(AOBJ)
	$(REMOVE) $(COBJARM)
	$(REMOVE) $(AOBJARM)
	$(REMOVE) $(LST)
	$(REMOVE) $(SRC:.c=.s)
	$(REMOVE) $(SRC:.c=.d)
	$(REMOVE) $(SRCARM:.c=.s)
	$(REMOVE) $(SRCARM:.c=.d)
	$(REMOVE) .dep/*
	$(REMOVE) -r .dep


# Include the dependency files.
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)


# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion \
build elf hex bin lss sym clean clean_list program