Thread: MS Visual C++ 6.0 Linking Error

  1. 07-05-2005 #1
    fnoyan
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    MS Visual C++ 6.0 Linking Error

    Hi
    I have a program that communicates with serial port. In compiling process there is no error but while buildind the obj file I get some errors!

    --------------------Configuration: StdAfx - Win32 Debug--------------------
    Linking...
    nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
    nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex
    libcd.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
    Debug/StdAfx.exe : fatal error LNK1120: 3 unresolved externals
    Error executing link.exe.

    StdAfx.exe - 4 error(s), 0 warning(s)

    Do I have to include extra libraries in order to avoid such errors!? All the header files are available in appropriate fokders.

    Thanks...
  2. 07-05-2005 #2
    hk_mp5kpdw
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    What kind of project did you specify when you started the program? I seem to recall this type of error a while back but it has been a long time... I can't remember exactly but you may need to go under Project->Settings->General Tab->Microsoft Foundation Classes and make sure that either of the two "Use MFC in a... " options are selected and that should get rid of the two threadex error messages (I think that's it but I could be wrong). As for the "main" error message it just looks like your project needs a main function created.
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
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  3. 07-05-2005 #3
    mitakeet
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    Make sure you are using multi-threaded libraries.

    Free code: http://sol-biotech.com/code/.

    It is not that old programmers are any smarter or code better, it is just that they have made the same stupid mistake so many times that it is second nature to fix it.
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  4. 07-05-2005 #4
    BMJ
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    You need to specify the /MT, /MTD, or /MD switch with the linker. I haven't used VC6 in a while, but your project properties should have an option for it like this:
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