This content is not available in your preferred language.

The content is shown in another available language. Your browser may include features that can help translate the text.

Error Undefined Symbol in Winhost.obj in LabWindows™/CVI™ Real-Time

Updated May 15, 2023

Reported In

Software

  • LabWindows/CVI
  • LabWindows/CVI Real-Time Module

Programming Language

  • C
  • C++

Issue Details

When compiling my LabWindows™/CVI™ Real-Time application DLL I get linker errors on undefined symbols in winhost.obj. There are different functions that are referenced. How do I build my application? 

 

error: Undefined symbol '_PlotStripChart@28'  in winhost,obj 
error: Undefined symbol '_SetCtrlVal' in winhost,obj 
 

Solution

The undefined symbol error can occur for several reasons, check the following: 

  • Ensure that you are not including libraries that are not supported in LabWindows/CVI Real-Time in your code or within the project.
  • Check to ensure that your build settings are correct to build an RT application. 

Related Links

Why Do I Get Error Undefined Symbol '_RTmain' When Trying to Build My RT DLL?

Other Support Options

Ask the NI Community

Collaborate with other users in our discussion forums



Request Support from an Engineer

A valid service agreement may be required, and support options vary by country.