# Toolchain prefix (i.e arm-elf -> arm-elf-gcc.exe)
TCHAIN = arm-none-eabi

# MCU name, submodel and board
MCU = cortex-m3

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

# List C source files here. (C dependencies are automatically generated.)
# use file-extension c for "c-only"-files
SRC = common/startup_stm32f10x_md.c
#SRC += common/syscalls.c
#SRC += term_io.c
SRC += $(TARGET).c


# List C++ source files here.
# use file-extension cpp for C++-files (use extension .cpp)
CPPSRC = 

# List Assembler source files here.
# Make them always end in a capital .S.  Files ending in a lowercase .s
# will not be considered source files but generated files (assembler
# output from the compiler), and will be deleted upon "make clean"!
# Even though the DOS/Win* filesystem matches both .s and .S the same,
# it will preserve the spelling of the filenames, and gcc itself does
# care about how the name is spelled on its command-line.
ASRC =

## Output format. (can be ihex or binary or both)
## (binary i.e. for openocd and SAM-BA, hex i.e. for lpc21isp and uVision)
#FORMAT = ihex
#FORMAT = binary
FORMAT = both

# Optimization level, can be [0, 1, 2, 3, s]. 
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = 0

# Debugging format.
# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
#DEBUG = stabs
DEBUG = dwarf-2

# List any extra directories to look for include files here.
#     Each directory must be seperated by a space.
EXTRAINCDIRS = ./common

# List any extra directories to look for library files here.
#     Each directory must be seperated by a space.
EXTRA_LIBDIRS = ./common

# Path to Linker-Scripts
LINKERSCRIPTPATH = ./common

# 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 -I options here
CINCS =

# Compiler flags.

#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and avr-libc documentation
#  -Wall...:     warning level
#  -Wa,...:      tell GCC to pass this to the assembler.
#    -adhlns...: create assembler listing
#
# Flags for C and C++ (arm-elf-gcc/arm-elf-g++)
# CFLAGS = -g$(DEBUG)
CFLAGS = $(CINCS)
CFLAGS += -O$(OPT)
CFLAGS += -Wall -Wcast-align -Wimplicit 
CFLAGS += -Wpointer-arith -Wswitch
CFLAGS += -Wredundant-decls -Wreturn-type -Wshadow -Wunused
CFLAGS += -Wa,-adhlns=bin/$(subst $(suffix $<),.lst,$<) 
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

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

# flags only for C++ (arm-elf-g++)
# CPPFLAGS = -fno-rtti -fno-exceptions
CPPFLAGS = 

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


#Additional libraries.

# Extra libraries
#    Each library-name must be seperated by a space.
#    To add libxyz.a, libabc.a and libefsl.a: 
#    EXTRA_LIBS = xyz abc efsl
#EXTRA_LIBS = efsl
#EXTRA_LIBS = STR71Xlibstd
EXTRA_LIBS =

#Support for newlibc-lpc (file: libnewlibc-lpc.a)
#NEWLIBLPC = -lnewlib-lpc

MATH_LIB = -lm

# CPLUSPLUS_LIB = -lstdc++

# Linker flags.
#  -Wl,...:     tell GCC to pass this to linker.
#    -Map:      create map file
#    --cref:    add cross reference to  map file

LDFLAGS = -nostartfiles -Wl,--gc-sections,-Map=bin/$(TARGET).map,-cref,-u,Reset_Handler
LDFLAGS += -lc
LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
LDFLAGS += -lc -lgcc 
LDFLAGS += $(CPLUSPLUS_LIB)
LDFLAGS += $(patsubst %,-L%,$(EXTRA_LIBDIRS))
LDFLAGS += $(patsubst %,-l%,$(EXTRA_LIBS))
LDFLAGS += -T common/stm32.ld

#LDFLAGS = -nostartfiles -Wl,-Map=bin/$(TARGET).map,--cref,--gc-sections
#LDFLAGS += -lc
#LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
#LDFLAGS += -lc -lgcc 
#LDFLAGS += $(CPLUSPLUS_LIB)
#LDFLAGS += $(patsubst %,-L%,$(EXTRA_LIBDIRS))
#LDFLAGS += $(patsubst %,-l%,$(EXTRA_LIBS))
#LDFLAGS += -T common/stm32.ld

# Define programs and commands.
SHELL = sh
CC = $(TCHAIN)-gcc
CPP = $(TCHAIN)-g++
AR = $(TCHAIN)-ar
OBJCOPY = $(TCHAIN)-objcopy
OBJDUMP = $(TCHAIN)-objdump
SIZE = $(TCHAIN)-size
NM = $(TCHAIN)-nm
REMOVE = rm -f
REMOVEDIR = rm -f -r
COPY = cp

# Define Messages
# English
MSG_ERRORS_NONE = Errors: none
MSG_BEGIN = "-------- begin --------"
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_COMPILINGCPP = Compiling C++:
MSG_ASSEMBLING = Assembling:
MSG_CLEANING = Cleaning project:
MSG_FORMATERROR = Can not handle output-format


# Define all object files.
COBJ      = $(SRC:%.c=bin/%.o)
AOBJ      = $(ASRC:%.S=bin/%.o)
CPPOBJ    = $(CPPSRC:%.cpp=bin/%.o)


# Define all listing files.
LST = $(ASRC:%.S=bin/%.lst) $(SRC:%.c=bin/%.lst)
LST += $(CPPSRC:%.cpp=bin/%.lst)

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

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


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

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

elf: bin/$(TARGET).elf
lss: bin/$(TARGET).lss 
sym: bin/$(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) bin/$(TARGET).hex
ELFSIZE = $(SIZE) -A bin/$(TARGET).elf
sizebefore:
	@if [ -f bin/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi

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


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


# 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 : $(AOBJ) $(COBJ) $(CPPOBJ)
%.elf:  $(AOBJ) $(COBJ) $(CPPOBJ)
	@echo
	@echo $(MSG_LINKING) $@
	$(CC) -mthumb $(ALL_CFLAGS) $(AOBJ) $(COBJ) $(CPPOBJ) --output $@ $(LDFLAGS)

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

# Compile: create object files from C++ source files. ARM/Thumb
$(CPPOBJ) : bin/%.o : %.cpp
	@echo
	@echo $(MSG_COMPILINGCPP) $<
	$(CPP) -c -mthumb $(ALL_CFLAGS) $(CPPFLAGS) $< -o $@ 


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


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


clean_list :
	@echo
	@echo $(MSG_CLEANING)
	$(REMOVE) bin/$(TARGET).hex
	$(REMOVE) bin/$(TARGET).bin
	$(REMOVE) bin/$(TARGET).obj
	$(REMOVE) bin/$(TARGET).elf
	$(REMOVE) bin/$(TARGET).map
	$(REMOVE) bin/$(TARGET).obj
	$(REMOVE) bin/$(TARGET).a90
	$(REMOVE) bin/$(TARGET).sym
	$(REMOVE) bin/$(TARGET).lnk
	$(REMOVE) bin/$(TARGET).lss
	$(REMOVE) $(COBJ)
	$(REMOVE) $(AOBJ)
	$(REMOVE) $(LST)
	$(REMOVE) $(SRC:%.c=bin/%.s)
	$(REMOVE) $(SRC:%.c=bin/%.d)
	$(REMOVE) $(CPPSRC:%.cpp=bin/%.s) 
	$(REMOVE) $(CPPSRC:%.cpp=bin/%.d)
	$(REMOVEDIR) bin/.dep | exit 0


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


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


open:
	scite $(SRC:.c=.c) &