my makefile for CPP v2.0

this is my second makefile for my Cpp project!
It's designed for multi folders!

It's direction:
warrior@warrior-ThinkPad:~/CreazyCode/CPPproject/Mdemo$ tree
.
├── inc
│   ├── demo.h
│   └── main.h
├── log
│   └── info.log
├── makefile
├── obj
├── src
│   ├── demo.cc
│   ├── main.cc
│   └── out.cc
└── tags

The makefile content:

#makefile demo V2.0
#author: warrior
#mail:[e-mail]
#date:2015/5/8

CXX := g++
CFLAGS := -c -g -W -Wall
SRCDIR := ./src
INCDIR := -I./inc -I.
OBJDIR := ./obj

SOURCES := $(shell ls $(SRCDIR)/*.cc)
OBJS := $(patsubst %.cc,%.o,$(SOURCES))
TARGET := target


${TARGET} : ${OBJS}
    ${CXX} -o $@ $^

%.o : %.cc
    $(CXX) ${CFLAGS} -o $@ $< $(INCDIR)




.PHONY : clean
clean :
    -rm -f $(SRCDIR)/*.o target