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Calling C++ functions from C project

Discussion in 'C++' started by arang1978, Jul 3, 2010.

  1. arang1978

    arang1978 New Member

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    Hello Friends,

    I need help to integrate a open source code which is written in C++ (Live555 RTSP source code) into my project which is written in C language.

    I have renamed the int main (int argc, char **argv) function which is in C++ to
    extern "C" int rtsp_main (int argc, char **argv)
    and called it from my main () in my project which is C language.

    I get a lot of error like below
    playCommon.cpp:(.text+0x25c): undefined reference to `operator*(short, DelayInterval const&)'
    playCommon.cpp:(.text+0x260): undefined reference to `DELAY_SECOND'
    playCommon.cpp:(.text+0x298): undefined reference to `operator*(short, DelayInterval const&)'
    playCommon.cpp:(.text+0x2c0): undefined reference to `operator*(short, DelayInterval const&)'
    ../lib//libliveMedia.a(playCommon.o): In function `main_RTSPClient':
    playCommon.cpp:(.text+0x3144): undefined reference to `BasicTaskScheduler::createNew()'


    If any of you let me know the easy way to use the C++ project in C project then it will be easy for me.

    My e-mail ID is arang1978@gmail.com

    Thanks in advance.

    Regards,
    Arang



     
  2. jimblumberg

    jimblumberg New Member

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    The error messages undefined references usually mean that you have not included all of the required
    libraries.

    Jim
     
  3. arang1978

    arang1978 New Member

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    Hello Mr.Jim,

    Thank you for your help. As you told me, I didn't include some libraries. I have included them now. And there is no compilation errors now.

    Regards,
    Arang.
     

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