gcc compiling and linking problem

This is a discussion on gcc compiling and linking problem within the C Programming forums, part of the General Programming Boards category; Hi all, I am facing a problem in creating an executable. My code compiles fine but while linking with a ...

  1. #1
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    Question gcc compiling and linking problem

    Hi all,

    I am facing a problem in creating an executable.

    My code compiles fine but while linking with a static library it says undefined reference to "fuctionname".
    Where as instead of creating executable if i am creating a shared library of it then it works fine (i donít know it will run fine or not, but compiling and creation of .so goes fine).

    Could you help me out of this problem?

    I have heard that shared libraries are permitted to have undefined references. Is it true?

    Thanks in advance.
    S_ccess is waiting for u. Go Ahead, put u there.

  2. #2
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    A .so doesn't require all symbols to be resolved, so I'd guess that it simply hides the actual problem until you try to RUN the application that links to the .so.

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    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  3. #3
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    ok, thanks for sharing the information.
    I will run the application and see the possible results.

    Any other information will also be appreciable.
    S_ccess is waiting for u. Go Ahead, put u there.

  4. #4
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    It would also help if you let us know what the symbol that is undefined is. One of your symbols, something from the C library, or... ?

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    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  5. #5
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    It is from some third party library.
    I am trying to resolve, i will update you once i am done.
    S_ccess is waiting for u. Go Ahead, put u there.

  6. #6
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    Quote Originally Posted by maven View Post
    It is from some third party library.
    I am trying to resolve, i will update you once i am done.
    So maybe you need to link your library with that third party library?

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  7. #7
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    It is solved.

    I was compiling my code with the library only. But there were few conditional comiplation in libarary code, which needs to be configure in a header file. When i compiled the library code with proper configuration then it worked fine.

    By the way, thanks a lot matsp for nice informations!
    S_ccess is waiting for u. Go Ahead, put u there.

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