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3 Linking errors i don't know what library i need = unresolved externals

Posted on 2004-08-19
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Last Modified: 2007-12-19
hello i have 3 errors with linking i don't know what library i need so anyone can tell me what i need

my library list : kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib

Linking Problem

Linking...
lib.obj : error LNK2001: unresolved external symbol __chvalidator
mass.obj : error LNK2001: unresolved external symbol __chvalidator
Debug/hello.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

hello.exe - 3 error(s), 0 warning(s)


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Question by:Hanble
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11 Comments
 
LVL 5

Expert Comment

by:millsoft
ID: 11843879
Hi Hanble,

isctype.h in the CRT source for .NET has this:


/***
* __chvalidator
*
* Purpose:
*       This function is called by character testing functions in debug
*       versions. This function test for validation of c as character.
*       For improvement in performance, it is not used in non-debug
*       version.  It is available in the static single-thread non-debug
*       build, though, just in case C code that includes ctype.h is compiled
*       /D_DEBUG /ML.
*
*******************************************************************************/

Are you compiling release or debug?

Cheers!
Brad
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LVL 86

Expert Comment

by:jkr
ID: 11844321
I am missing libcpd.lib and libcd.lib in the above list...
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LVL 39

Expert Comment

by:itsmeandnobodyelse
ID: 11844735
>> I am missing libcpd.lib and libcd.lib in the above list...

The include file afx.h contains a sequence

#ifndef _AFX_NOFORCE_LIBS

...  include some windows and mfc libs

#ifdef _DLL
     #if !defined(_AFX_NO_DEBUG_CRT) && defined(_DEBUG)
          #pragma comment(lib, "msvcrtd.lib")
     #else
          #pragma comment(lib, "msvcrt.lib")
     #endif
#else
#ifdef _MT
     #if !defined(_AFX_NO_DEBUG_CRT) && defined(_DEBUG)
          #pragma comment(lib, "libcmtd.lib")
     #else
          #pragma comment(lib, "libcmt.lib")
     #endif
#else
     #if !defined(_AFX_NO_DEBUG_CRT) && defined(_DEBUG)
          #pragma comment(lib, "libcd.lib")
     #else
          #pragma comment(lib, "libc.lib")
     #endif
#endif
#endif


So, in case of MFC these libraries got linked by #pragma comment.


Hanble,

are you using precompiled header files?


Regards, Alex






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LVL 86

Accepted Solution

by:
jkr earned 43 total points
ID: 11844771
>>The include file afx.h contains a sequence

... in which libcpd.lib still is missing.
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LVL 39

Assisted Solution

by:itsmeandnobodyelse
itsmeandnobodyelse earned 41 total points
ID: 11844847
>> ... in which libcpd.lib still is missing.

It's the "C++ Debug Runtime Library". Didn't see it recently.

Could be obsolete because of msvcrt.lib??? Or because of STL resp. C++ Standard ???

Regards, Alex
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Author Comment

by:Hanble
ID: 11851397
are you using precompiled header files?
no i don't use percompiled header


i don't know what can i do with this problem anyway!


Are you compiling release or debug?
debug
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LVL 5

Assisted Solution

by:millsoft
millsoft earned 41 total points
ID: 11852523
Try changing your run-time library options to static-linked/single-thread. Then try dynamic-link/single-thread, then Static-Link/Multiple-thread, etc. to see if perhaps a different version of the CRT will make a difference.
0
 

Expert Comment

by:jac_goudsmit
ID: 23920482
For me the way to fix it was to change the runtime library options to Multithreaded and Debug Multithreaded instead of Single-Threaded and Debug SIngle-Threaded.

Setting the runtime libraries to the DLL option (i.e. using MSVCRT.DLL) also works.

(Visual Studio 6 with the Platform SDK Feb 2003 and DDK for Windows Server 2003 SP1 installed)

===Jac
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