STM8 sdcc Makefile

#----------------------------------------------------------
# This is first version of makefile for STM8 and SDCC
#----------------------------------------------------------

# Project name
PROJECT := freq_meter
# Define mcu used in project according to "stm8s.h"
MCU := STM8S003
# Set --max-allocs-per-node option. Note: bigger value results
# more optimised code, but dramatically increases compilation
# time and PC resources. Default is 3000.
MAX_ALLOCS := 100000
# List user sources and headers directories.
# "." is current directory, where Makefile is.
SRC_DIRS := . inc src
# Set build root directory
BUILD_DIR := ./build
# Set object files directory
OBJ_DIR := $(BUILD_DIR)/obj
# Set dependencies directory
DEP_DIR := $(OBJ_DIR)
# Set output directory
OUT_DIR := $(BUILD_DIR)
# Automatically generate list of source and object files, found in SRC_DIRS
# Name of source file will be path/to/file.c, name of object file -- file.rel
SRC_FILES := $(wildcard $(addsuffix /*.c, $(SRC_DIRS)))
OBJ_FILES := $(addprefix $(OBJ_DIR)/, $(patsubst %.c, %.rel, $(SRC_FILES)))
DEP_FILES := $(addprefix $(DEP_DIR)/,$(patsubst %.c, %.d, $(SRC_FILES)))
CLEAN_FILES := $(OBJ_FILES) $(DEP_FILES) $(OBJ_FILES:.rel=.rst) $(OBJ_FILES:.rel=.lst) $(OBJ_FILES:.rel=.sym) $(OBJ_FILES:.rel=.map) $(OBJ_FILES:.rel=.adb) $(OBJ_FILES:.rel=.cdb) $(OBJ_FILES:.rel=.asm) $(OBJ_FILES:.rel=.lk)

# Define where make should look for dependencies
#vpath %.c   $(SRC_DIRS)
#vpath %.h   $(SRC_DIRS)
#vpath %.rel $(OBJ_DIR)
#vpath %.d   $(DEP_DIR)
vpath %.ihx $(OUT_DIR)

# Specify the compiler
CC = sdcc
# Compile flags
# --peep-file trv-peeph.def
CFLAGS = -mstm8 --fverbose-asm --std-sdcc99 -D$(MCU) --max-allocs-per-node $(MAX_ALLOCS)
# Linker flag. Here we can specify additional libraries
LDFLAGS = -mstm8 --out-fmt-ihx -lstm8


all: project

project: $(PROJECT).ihx

# Link all object files in OBJ_DIR and put result in OUT_DIR with name $(PROJECT).ihx
$(PROJECT).ihx: $(OBJ_FILES)
    @echo '=================================='
    @echo ' list of objects files to link:'
    @echo '* $(notdir $(OBJ_FILES))'
    @echo '----------------------------------'
    $(CC) $(LDFLAGS) $^ -o $(OUT_DIR)/$@
    @echo '=================================='

$(OBJ_DIR)/%.rel: %.c $(DEP_DIR)/%.d
    @echo '=================================='
#   @echo ' list of source files to rebuild:'
#   @echo '* $(SRC_FILES)'
#   @echo '----------------------------------'
    -mkdir -p $(@D)
    $(CC) $(CFLAGS) $(addprefix -I, $(SRC_DIRS)) -c $< -o $@
    @echo '=================================='

$(DEP_DIR)/%.d: %.c
    @echo '$@'
    -mkdir -p $(@D)
    $(CC) $(CFLAGS) $(addprefix -I, $(SRC_DIRS)) -MM $< > $@
    @mv -f $@ $@.tmp
    @sed -e 's|.*:|$(patsubst $(DEP_DIR)/%.d, $(OBJ_DIR)/%.rel, $@):|' < $@.tmp > $@
    @sed -e 's/.*://' -e 's/\\$$//' < $@.tmp | fmt -1 | \
     sed -e 's/^ *//' -e 's/$$/:/' >> $@
    @rm -f $@.tmp

-include $(DEP_FILES)

clean:
    rm -f $(CLEAN_FILES)
    rm -f $(OUT_DIR)/$(PROJECT).ihx $(OUT_DIR)/$(PROJECT).adb $(OUT_DIR)/$(PROJECT).cdb $(OUT_DIR)/$(PROJECT).lk $(OUT_DIR)/$(PROJECT).map

list_sources:
    @echo '=================================='
    @echo ' list of source files were found:'
    @echo '+ $(SRC_FILES)'
    @echo '=================================='

list_deps:
    @echo '$(DEP_FILES)'

.PHONY: clean list_sources list_deps