Makefile error

Makefile文件如下：###
### Makefile for H.26L encoder
###
### generated for UNIX/LINUX environments
### by H. Schwarz
###



NAME= lencod

### include debug information: 1=yes, 0=no
#DBG= 0

DEPEND= dependencies

BINDIR= ../bin
INCDIR= inc
SRCDIR= src
OBJDIR= obj

ADDSRCDIR= ../lcommon/src
ADDINCDIR= ../lcommon/inc

CC= $(shell which gcc)

LIBS= -lm
FLAGS= -ffloat-store -Wall -I$(INCDIR) -I$(ADDINCDIR)

ifdef DBG
SUFFIX= .dbg
FLAGS+= -g
else
SUFFIX=
FLAGS+= -O2
endif

OBJSUF= .o$(SUFFIX)

SRC= $(wildcard $(SRCDIR)/*.c) 
ADDSRC= $(wildcard $(ADDSRCDIR)/*.c)
OBJ= $(SRC(SRCDIR)/%.c=$(OBJDIR)/%.o$(SUFFIX)) $(ADDSRC(ADDSRCDIR)/%.c=$(OBJDIR)/%.o$(SUFFIX)) 
BIN= $(BINDIR)/$(NAME)$(SUFFIX).exe


default: depend bin tags

dependencies:
  @echo "" >dependencies

clean:
  @echo remove all objects
  @rm -f $(OBJDIR)/*

tags:
  @echo update tag table
  @ctags inc/*.h src/*.c

bin: $(OBJ)
  @echo
  @echo 'creating binary "$(BIN)"'
  @$(CC) -o $(BIN) $(OBJ) $(LIBS)
  @echo '... done'
  @echo

depend:
  @echo
  @echo 'checking dependencies'
  @$(SHELL) -ec '$(CC) -MM $(CFLAGS) -I$(INCDIR) -I$(ADDINCDIR) $(SRC) $(ADDSRC) \
  | sed '\''s@\(.*\)\.o[ :]@$(OBJDIR)/\1.o$(SUFFIX)g'\'' \
  >$(DEPEND)'
  @echo

$(OBJDIR)/%.o$(SUFFIX): $(SRCDIR)/%.c
  @echo 'compiling object file "$@" ...'
  @$(CC) -c -o $@ $(FLAGS) $<

$(OBJDIR)/%.o$(SUFFIX): $(ADDSRCDIR)/%.c
  @echo 'compiling object file "$@" ...'
  @$(CC) -c -o $@ $(FLAGS) $<


include $(DEPEND)

在linux中进行编译会出现下面的问题

checking dependencies 
compiling object file "obj/annexb.o" ...
Assembler messages:
FATAL:can't creat obj/annexb.o:没有那个文件或目录
make:***[obj/annexb.o] Error 1

缺少 annexb的目标文件依赖。

obj目录不存在吧. 
导致make obj/xx.o 时出错了.