PACKAGE    = $(notdir $(realpath .))
ADD_CFLAGS = 
ADD_LFLAGS = 

GIT_VERSION= $(shell git describe --tags)
#TRGT      ?= arm-none-eabi-
CC         = $(TRGT)gcc
CXX        = $(TRGT)g++
OBJCOPY    = $(TRGT)objcopy

RM         = rm -rf
COPY       = cp -a
PATH_SEP   = /

ifeq ($(OS),Windows_NT)
COPY       = copy
RM         = del
PATH_SEP   = \\
endif

DBG_CFLAGS = -ggdb -g -DDEBUG -Wall
DBG_LFLAGS = -ggdb -g -Wall
CFLAGS     = $(ADD_CFLAGS) \
             -Wall -Wextra \
             -ffunction-sections -fdata-sections -fno-common \
             -fomit-frame-pointer -Os \
             -DGIT_VERSION=u\"$(GIT_VERSION)\" -std=gnu11
CXXFLAGS   = $(CFLAGS) -std=c++11
LFLAGS     = $(ADD_LFLAGS) $(CFLAGS) \

OBJ_DIR    = .obj

CSOURCES   = $(wildcard *.c)
CPPSOURCES = $(wildcard *.cpp)
ASOURCES   = $(wildcard *.S)
COBJS      = $(addprefix $(OBJ_DIR)/, $(notdir $(CSOURCES:.c=.o)))
CXXOBJS    = $(addprefix $(OBJ_DIR)/, $(notdir $(CPPSOURCES:.cpp=.o)))
AOBJS      = $(addprefix $(OBJ_DIR)/, $(notdir $(ASOURCES:.S=.o)))
OBJECTS    = $(COBJS) $(CXXOBJS) $(AOBJS)
VPATH      = .

QUIET      = @

ALL        = all
TARGET     = $(PACKAGE)
CLEAN      = clean

$(ALL): $(TARGET)

$(OBJECTS): | $(OBJ_DIR)

$(TARGET): $(OBJECTS)
	$(QUIET) echo "  LD       $@"
	$(QUIET) $(CC) $(OBJECTS) $(LFLAGS) -o $@

$(DEBUG): CFLAGS += $(DBG_CFLAGS)
$(DEBUG): LFLAGS += $(DBG_LFLAGS)
CFLAGS += $(DBG_CFLAGS)
LFLAGS += $(DBG_LFLAGS)
$(DEBUG): $(TARGET)

$(OBJ_DIR):
	$(QUIET) mkdir $(OBJ_DIR)

$(COBJS) : $(OBJ_DIR)/%.o : %.c Makefile
	$(QUIET) echo "  CC       $<	$(notdir $@)"
	$(QUIET) $(CC) -c $< $(CFLAGS) -o $@ -MMD

$(OBJ_DIR)/%.o: %.cpp
	$(QUIET) echo "  CXX      $<	$(notdir $@)"
	$(QUIET) $(CXX) -c $< $(CXXFLAGS) -o $@ -MMD

$(OBJ_DIR)/%.o: %.S
	$(QUIET) echo "  AS       $<	$(notdir $@)"
	$(QUIET) $(CC) -x assembler-with-cpp -c $< $(CFLAGS) -o $@ -MMD

.PHONY: clean

clean:
	$(QUIET) echo "  RM      $(subst /,$(PATH_SEP),$(wildcard $(OBJ_DIR)/*.d))"
	-$(QUIET) $(RM) $(subst /,$(PATH_SEP),$(wildcard $(OBJ_DIR)/*.d))
	$(QUIET) echo "  RM      $(subst /,$(PATH_SEP),$(wildcard $(OBJ_DIR)/*.d))"
	-$(QUIET) $(RM) $(subst /,$(PATH_SEP),$(wildcard $(OBJ_DIR)/*.o))
	$(QUIET) echo "  RM      $(TARGET)"
	-$(QUIET) $(RM) $(TARGET)

include $(wildcard $(OBJ_DIR)/*.d)