Undefined Symbol Error after changing an exported function name

[ArtB83]

Hi All,

I'm developing a dll for external application.

After changing some function's name, I received a linker error, "undefined symbol "_funcNewName" referenced in "pathToObjFile\*.obj" ".

I've rebuild the dll with new function name, copied the new *.lib and *.dll files into external application folder. 

Invoked the function using a new name, but still having that issue. 

Interesting detail to mention, when I roll back to original name - no linking errors.

Any Ideas? 

Thanks for the help 🙂 

[ZKami]

Hmmm, that's interesting. I'm not sure why that's happening. Does it happen with other functions or just that one? Can you use the old name, since that works? Is it being referenced anywhere else?

[ZKami · Accepted solution]

There are two articles which might be helpful:

Undefined Symbol Error When Importing a DLL in LabWindows/CVI Project

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019KrgSAE

Undefined Symbol Link Error in LabWindows/CVI 2012 When Building a Static Library

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P8uISAS

[ArtB83]

Hi Zofiak, 

It happened after I changed function name, or added a new function, then invoked it in my main application. 

I think it's some kind of a bug in CVI IDE, because the original project type was EXECUTABLE, I changed it to DLL. It worked fine, from external application, until I added a new function. 

So I created a new DLL project, with same sources, types and declarations, and it solved the linking problem.

Thanks for the support anyway 🙂 

[ZKami]

I'm glad you found a solution!