make 컴파일시 질문입니다.

리눅스 프로그래밍 초보 입니다.. 다름이 아니라, 프로그램을 만들고, make로 gcc 컴파일할때 에러가 발생해서 글을 올립니다.
구글이나 다른 사이트에서 찾아보고, 적용해도, 해결이 되질 않네요... 고수님들의 조언을 부탁 드립니다.

아래는 make파일 내용 입니다..

CC = gcc
#CFLAGS = -g -O2 -W -Wall
CFLAGS = -v -w -g -W -Wall -O2
LIB = -lpthread

rtpcontrol : rtcp.c rtcp_event.c rtcp_packethandling.c rtcp_recv.c rtcp_utils.c rtp_buffer.c rtp_payload_type.c rtp_recv.c rtp_session.c rtp_ssrc_queue.c rtp_thread.c rtp_transport.c timeval.c bufferpool/bpstate.c parser/rtpparsers.c parser/rtp_h263.c parser/rtp_h264.c parser/rtp_m4v.c parser/rtp_mpa.c parser/rtp_mpv.c parser/rtp_speex.c parser/rtp_theora.c parser/rtp_aac.c parser/rtp_vorbis.c include/nms_header.c include/nms_printf.c include/nms_sock.c include/random32.c parser/rtp_utils.c

$(CC) $(CFLAGS) -o $@ $^ $(LIB)
clean :
@rm -rf *.o rtpcontrol
==========================================================================================================================================
make 후 에러 메세지 입니다..

/RTP_RTCP_Controller/rtcp_recv.c:122: multiple definition of `rtcp_parse_pkt'
/tmp/ccqAqCh8.o:/RTP_RTCP_Controller/rtcp_packethandling.c:135: first defined here
/tmp/ccqcT7y8.o: In function `rtcp_recv':
/RTP_RTCP_Controller/rtcp_recv.c:54: multiple definition of `rtcp_recv'
/tmp/ccqAqCh8.o:/RTP_RTCP_Controller/rtcp_packethandling.c:64: first defined here
/usr/lib/gcc/i386-redhat-linux/4.3.2/../../../crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
/tmp/ccUlEVE3.o: In function `rtp_recv':
/RTP_RTCP_Controller/rtp_recv.c:221: undefined reference to `playout_add'
/tmp/ccMhPJd6.o: In function `rtp_session_get_ssrc':
/RTP_RTCP_Controller/rtp_session.c:87: undefined reference to `rtsp_get_rtp_queue'
/tmp/cc7J7gmd.o: In function `rtp_ssrc_check':
/RTP_RTCP_Controller/rtp_ssrc_queue.c:160: undefined reference to `playout_init'
/RTP_RTCP_Controller/rtp_ssrc_queue.c:253: undefined reference to `playout_init'
/tmp/ccfpJqlD.o: In function `rtp_parser_reg':
/RTP_RTCP_Controller/parser/rtpparsers.c:93: undefined reference to `rtp_parser_mpa'
/tmp/ccfpJqlD.o: In function `rtp_parsers_init':
/RTP_RTCP_Controller/parser/rtpparsers.c:77: undefined reference to `rtp_parser_mpa'
/tmp/ccfpJqlD.o:(.rodata+0x0): undefined reference to `rtp_parser_mpa'
/tmp/ccfpJqlD.o:(.rodata+0x4): undefined reference to `rtp_parser_mpv'
/tmp/ccfpJqlD.o:(.rodata+0x8): undefined reference to `rtp_parser_h264'
/tmp/ccfpJqlD.o:(.rodata+0xc): undefined reference to `rtp_parser_h263'
/tmp/ccfpJqlD.o:(.rodata+0x10): undefined reference to `rtp_parser_speex'
/tmp/ccfpJqlD.o:(.rodata+0x14): undefined reference to `rtp_parser_theora'
/tmp/ccfpJqlD.o:(.rodata+0x18): undefined reference to `rtp_parser_vorbis'
/tmp/ccfpJqlD.o:(.rodata+0x1c): undefined reference to `rtp_parser_m4v'
/tmp/ccfpJqlD.o:(.rodata+0x20): undefined reference to `rtp_parser_aac'
collect2: ld returned 1 exit status
make: *** [rtpcontrol] Error 1