C++ libraries

This is a discussion on C++ libraries within the C++ Programming forums, part of the General Programming Boards category; I'm trying to use this library: C++ Big Integer Library - Matt McCutchen's Web Site But, I have nooo idea ...

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    C++ libraries

    I'm trying to use this library: C++ Big Integer Library - Matt McCutchen's Web Site

    But, I have nooo idea how to start using it.

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    I'm trying to use this library: C++ Big Integer Library - Matt McCutchen's Web Site

    But, I have nooo idea how to start using it. I mean, how would I include the library?

  3. #3
    and the Hat of Guessing tabstop's Avatar
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    You don't include a library, ever, at any point. After your program is compiled, you need to link the library with your code. How you do that depends on your system.

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    Ubuntu (9.04) so Linux basically.

    G++ ( I zink latest version)

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    Then presumably you've got lib<whatever>.a somewhere. If you're on the command line, then just add -l<whatever> to the end of your command line, or the end of the final compilation command in your Makefile.

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    Quote Originally Posted by tabstop View Post
    Then presumably you've got lib<whatever>.a somewhere. If you're on the command line, then just add -l<whatever> to the end of your command line, or the end of the final compilation command in your Makefile.
    I don't have any file ending in ".a" in the zip file I downloaded...

  7. #7
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    So I had to break down and look at the library you refer to. Apparently there's not so much a library as a bunch of object files. Whichever object files you need, you can incorporate into your program, then. (You don't need -l; just put the .o files in with your .o files when you create the program.)

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    Can you please tell me the exact command for gcc?

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    Quote Originally Posted by Poincare View Post
    Can you please tell me the exact command for gcc?
    I could, but I don't know how much good it will do any of us, since I'd be quoting you -- the exact command is "gcc". In other words, instead of typing
    Code:
    gcc myfile1 myfile2 myfile3 -o exectuable
    you'd type
    Code:
    gcc myfile1 myfile2 myfile3 hisfile1 hisfile2 -o executable
    which does not require any additional anything on anybody's part.

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