Undefined Reference while compiling

hiiiii,

i am compiling the DCT application program in uclinux environment.i am, getting undefined reference error,i know this is linker problem,but i dont know to link and which file i have to link . i am posting the error below

sp/BasicUsageEnvironment0.o: In function `BasicUsageEnvironment0::reportBackgroundError()': BasicUsageEnvironment0.cpp:(.text+0xfa): undefined reference to `_stderr' BasicUsageEnvironment0.cpp:(.text+0x102): undefined reference to `_stderr' rtsp/RTPSource.o: In function `RTPSource::RTPSource(UsageEnvironment&, Groupsock*, unsigned char, unsigned int)': RTPSource.cpp:(.text+0xbfc): undefined reference to `_our_random32' rtsp/RTPSource.o: In function `RTPSource::RTPSource(UsageEnvironment&, Groupsock*, unsigned char, unsigned int)': RTPSource.cpp:(.text+0xc80): undefined reference to `_our_random32' rtsp/RTCP.o: In function `_drand30': RTCP.cpp:(.text+0x1aa): undefined reference to `_our_random' rtsp/RTCP.o: In function `RTCPInstance::onExpire1()': RTCP.cpp:(.text+0x354): undefined reference to `_OnExpire' rtsp/RTCP.o: In function `RTCPInstance::onReceive(int, int, unsigned int)': RTCP.cpp:(.text+0x9b2): undefined reference to `_OnReceive' rtsp/PassiveServerMediaSubsession.o: In function `PassiveServerMediaSubsession::sdpLines()': PassiveServerMediaSubsession.cpp:(.text+0x1b8): undefined reference to `_our_inet_ntoa' rtsp/DigestAuthentication.o: In function `Authenticator::setRealmAndRandomNonce(char const*)': DigestAuthentication.cpp:(.text+0x1be): undefined reference to `_our_MD5Data' rtsp/DigestAuthentication.o: In function `Authenticator::computeDigestResponse(char const*, char const*) const': DigestAuthentication.cpp:(.text+0x324): undefined reference to `_our_MD5Data' DigestAuthentication.cpp:(.text+0x368): undefined reference to `_our_MD5Data' DigestAuthentication.cpp:(.text+0x3d6): undefined reference to `_our_MD5Data' rtsp/ServerMediaSession.o: In function `ServerMediaSession::generateSDPDescription()': any one help me in this regard

aswini

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ashu
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