makefile.inc

FAT16 Filesystem on Philips LPC2000 series processors

#
# These are toplevel Make variables common to both processor
# make systems.  This file governs common make behavior.
#

export TOOLS_PREFIX=arm-elf-

export MAKEFLAGS="-s --no-print-directory"

## Create ROM-Image (final)
RUN_MODE=ROM_RUN
## Create RAM-Image (debugging)
#RUN_MODE=RAM_RUN

MCU = -mcpu=arm7tdmi
ARMARCH = -march=armv4t
THUMB    = -mthumb
THUMB_IW = -mthumb-interwork

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

# 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.)
OPTSIZE = -Os
OPTNONE = -O0

# 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

# 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
CDEFS =  -D$(RUN_MODE)

# Place -I options here
CINCS = -I$(TOPLEVEL)include -I$(TOPLEVEL)libs/include

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

# 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
CFLAGS = -g$(DEBUG) -march=armv4t
#CFLAGS += --verbose
CFLAGS += $(CDEFS) $(CINCS)
CFLAGS += -Wall -Wstrict-prototypes -Wcast-align -Wcast-qual -Wimplicit
CFLAGS += -Wmissing-declarations
CFLAGS += -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wswitch
CFLAGS += -Wredundant-decls -Wreturn-type -Wshadow -Wstrict-prototypes -Wunused
CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
CFLAGS += $(CSTANDARD)
CFLAGS += -nostdlib -nodefaultlibs
CFLAGS += -L$(HOME)/devtools/armThumb/lib/gcc/arm-elf/3.4.3/thumb/interwork/

## NONO CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums

# Assembler flags.
#  -Wa,...:   tell GCC to pass this to the assembler.
#  -ahlms:    create listing
#  -gstabs:   have the assembler create line number information; note that
#             for use in COFF files, additional information about filenames
#             and function names needs to be present in the assembler source
#             files -- see avr-libc docs [FIXME: not yet described there]
##ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:.S=.lst),-g$(DEBUG)

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

# Define all object files.
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)


# Define all listing files.
LST = $(ASRC:.S=.lst) $(SRC:.c=.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 = $(MCU) $(ARMARCH) -DTOPLEVEL=$(TOPLEVEL) -I. $(CFLAGS) $(GENDEPFLAGS)
ALL_ASFLAGS = $(MCU) $(ARMARCH) -I. -x assembler-with-cpp $(ASFLAGS)

#sub model must be "LPC2" followed by 3 digit flavor e.g. LPC2138
# look in main includes for #ifdef's that are affected by the 
# particular chip model, i.e. A/D convertor in lpcADC.h
#
SUBMDL = LPC2138
ALL_CFLAGS +=-D$(SUBMDL)