Home/ Questions/Q 167979
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T12:22:18+00:00

I am new to Windows and Visual Studio. I have a strong background in

  • 0

I am new to Windows and Visual Studio. I have a strong background in programming in Linux though. I’m trying to build (is build just one word for compile and link) a this sample code from a textbook. I made an empty project added the source and header files to the project. The code compiles fine. However, I get all these errors at link time. What’s happening is that the code calls a bunch of functions that VS can’t find. Specifically all the errors are

ping.obj : error LNK2019 unresolved external symbol

The example code is from Ch11 or Network Programming for Windows. It’s about creating raw sockets to use to make a ping program. Also, the code came with a Makefile but I don’t know how to use it with VS…

So, basically I need to know how to just put some code into VS and have it build properly. If anyone could help me with that or point me to a decent resource I’d really appreciate it.

edit: I’m using VS 2008 and C++

edit2: I made a makefile project and filled in the build command with cl ping.cpp resolve.cpp -out:ping.exe Ws2_32.lib

now it’s telling me my build was successful, but there’s no .exe anywhere… arg!! Windows makes no sense to me.

Here is what it’s telling me:

1>------ Build started: Project: ping, Configuration: Debug Win32 ------ 1>Performing Makefile project actions 1>Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.21022.08 for 80x86 1>Copyright (C) Microsoft Corporation.  All rights reserved. 1>cl : Command line warning D9035 : option 'o' has been deprecated and will be removed           in a future release 1>ping.cpp 1>resolve.cpp 1>Generating Code... 1>Microsoft (R) Incremental Linker Version 9.00.21022.08 1>Copyright (C) Microsoft Corporation.  All rights reserved. 1>/out:ping.exe  1>/out:ut:ping.exe  1>ping.obj  1>resolve.obj  1>Ws2_32.lib  1>Build log was saved at 'file://c:\Documents and Settings\Devin.DEVIN-DESK\My      Documents\Visual Studio 2008\Projects\raw_socks\ping\Debug\BuildLog.htm' 1>ping - 0 error(s), 1 warning(s) ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

edit3: this makes sense to me. I have two headers and two source files and I can’t seem to compile and link, no matter what I do. What’s a very straightforward and easy process in linux is convoluted in Windows.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. My guess is that you are not linking to a required library, and since you’re writing a ping app, I’d guess its the Windows Sockets library. Chances are you need to add ws2_32.lib as a linked module.

    Try doing this: Go to Project Options->Linker->Input

    Add Ws2_32.lib

    If that doesn’t fix it, please post the entire link error. It should make it more clear what is missing.

    • 0