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LINKER Problem - LNK2001 unresolved external symbol _endthreadex

Posted on 2001-07-31
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Last Modified: 2007-11-27
Greetings:

I'm trying to compile a program and the 3 linker errors I get are:

Linking...
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex

Any clues here?
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Question by:John500
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5 Comments
 
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nietod earned 50 total points
ID: 6337685
that means you are linking to the single-threaded run-time libraries.  You need to link to either the multi-threaded static link run time libraries or the molti-threaded DLL run-time library.

continues.
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by:jkr
ID: 6337696
See http://support.microsoft.com/support/kb/articles/Q126/6/46.asp ('PRB: Error Msg: LNK2001 on __beginthreadex and __endthreadex')
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LVL 22

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by:nietod
ID: 6337697
to link ot the right run-time library,

Go to the "Project" menu
"Project settings" menu option
Then in the dialog that appears go to the "C/C++' tab.
In the "category" list, go to "code generation"

Then you want change the "Use run-time library" list option to one of the multi-threaded options.

Note that you need to do this with both the debug and the release versions.  this is controlled by highlighting one version or the other in the list on the left.   Be sure to choose the debug libraries when settting it for a debug version and the release libraries when you set it for a release version.

Note that EE's E-mail notification is not working.  If you post a comment, I will not be notified about it--at this time anyways.  But you can e-mail me at nietod@journey. to notify me directly.
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LVL 86

Expert Comment

by:jkr
ID: 6337700
Ooops...
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Author Comment

by:John500
ID: 6337814
nietod,

That was the ticket.  Glad to see you are still out here on EE.

I should have known this was the answer because I asked this questin once before and you answered it.  It was actually the first place I looked, however, I was ensuring that it was set to 'single' instead of 'multiple'.

Thanks again!

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