fatal error LNK1169: one or more multiply defined symbols found
Ruben Collado Hernandez
I have a big problem with my program in VC++ 6.0. Last wednesday the program runs perfectly, and the next morning this message appeared, within more code:
nafxcwd.lib(afxmem.obj) : error LNK2005: "void
* __cdecl operator new(unsigned int)"
(??2@YAPAXI@Z) already defined in LIBCMTD.lib(new.obj)
nafxcwd.lib(afxmem.obj) : error LNK2005: "void
__cdecl operator delete(void *)"
(??3@YAXPAX@Z) already defined in LIBCMTD.lib(dbgdel.obj)
Bin files/Control.exe : fatal error LNK1169:
one or more multiply defined symbols found
Error executing link.exe.
If you can help me out I'll apreciate it.
Thanks.
--
Rubén Collado Hernández
Universidad Politécnica de Madrid
c/ Ronda de Valencia, 3
28012 Madrid - Spain
Tel: +34 91 336 68 78
Martin Nolte [MS]
ID: Q148652
Hope this helps !
ID: Q148652
The information in this article applies to:
SYMPTOMS
When the C Run-Time (CRT) library and MFC libraries are linked in the wrong order, LNK2005 errors like the following may occur:
"void * __cdecl operator new(unsigned int)"(??2@YAPAXI@Z) already
defined in LIBCMTD.lib(new.obj)
nafxcwd.lib(afxmem.obj) : error LNK2005:
"void __cdecl operator delete(void *)"(??3@YAXPAX@Z) already defined
nafxcwd.lib(afxmem.obj) : error LNK2005:
"void * __cdecl operator new(unsigned int,int,char const *,int)"
(??2@YAPAXIHPBDH@Z) already defined in LIBCMTD.lib(dbgnew.obj)
mfcs40d.lib(dllmodul.obj): error LNK2005: _DllMain@12 already defined in
MSVCRTD.LIB (dllmain.obj)
mfcs42d.lib(dllmodul.obj): error LNK2005: _DllMain@12 already defined in
msvcrtd.lib(dllmain.obj)
The CRT libraries use weak external linkage for the new, delete, and DllMain functions. The MFC libraries also contain new, delete, and DllMain functions, requiring MFC to be linked before the CRT libraries.
There are two ways to resolve this problem. The first solution involves forcing the linker to link the libraries in the correct order. The second solution allows you to find the module that's causing the problem and correct it.
Open the Project Settings dialog box by clicking Settings on the Build menu.
in the Settings For view, select (highlight) the project configuration that's getting the link errors.
Click the Link tab.
Select INPUT in the Category combo box.
In the Libraries to Ignore edit box, insert the library names (for example, Nafxcwd.lib Libcmtd.lib)
In the Object/library Modules edit box, insert the library names. You must ensure that these are listed in order and as the first two libraries in the line (for example, Nafxcwd.lib Libcmtd.lib).
Solution Two - Find the Problem Module and Correct It
Perform the following steps to see the current library link order:
Open the Project Settings dialog box by clicking Settings on the Build menu.
In the Settings For view, Select (highlight) the project configuration that's getting the link errors .
Click the Link tab.
Type the following in the Project Options dialog box:
/verbose:lib
This behavior is by design.
When using MFC libraries, you must make sure they are linked before the CRT library. This can be done by ensuring every file in your project includes ..\Msdev\Mfc\Include\Afx.h first, either directly (#include <Afx.h>) or indirectly (#include <Stdafx.h>). The Afx.h include file forces the correct order of the libraries, by using the #pragma comment (lib,"<libname>") directive.
Select line 29 (#ifndef _AFX_NOFORCE_LIBS) through line 204 (#endif file://!_AFX_NOFORCE_LIBS).
Copy the selection to the Windows Clipboard.
Create a new text file.
Paste the contents of the Clipboard into this new file.
Save the file as ..\Msdev\Mfc\Include\Forcelib.h.
Keywords : kberrmsg kbGenInfo kbVC kbVC400 kbVC410 kbVC500 kbVC600
Version : WINNT:4.0,4.1,5.0,6.0;
Platform : NT WINDOWS
Issue type : kbprb
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Ruben Collado Hernandez
THANKS
THANKS
THANKS
My problem was succesfully resolved. I was getting crazy... during five days.
I have another problem, I need to link a library as static in Visual Studio 6.0 but i don't know how to do it. Could you help me ???
Thanks you again.
Best regards. I'll apreciate it.
"Martin Nolte [MS]" wrote:
Hi Ruben,thatthere's a Knowledgebase ArticlePRB: LNK2005 Errors When Link C Run-Time Libs Before MFC Libs
ID: Q148652
Hope this helps ! Best Regards, Martin NolteDev Support CEMicrosoft GmbH PRB: LNK2005 Errors When Link C Run-Time Libs Before MFC Libs
--
Jose Felix Hernandez
Hi Ruben, To build the static library:1. Build a static library using App Wizard "Win 32 Static Link Library" the settings of a static link library can be found in the MSDN article. Overview: Creating a Static Library. To link the static library to your exe choose one of the following ways:Thank you for your help, but this is not exactly what i wanted to do.
I have a library (both .lib and .dll), and i have to link that library statically to my program (because i have to send the program to people without that .dll), but i don't know how to do it.
dave
Jose Felix Hernandez <jhe...@maxwell.fais.upm.es> wrote in message news:38478C25...@maxwell.fais.upm.es...
"Martin Nolte [MS]" wrote:Hi Ruben, To build the static library:1. Build a static library using App Wizard "Win 32 Static Link Library" the settings of a static link library can be found in the MSDN article. Overview: Creating a Static Library. To link the static library to your exe choose one of the following ways:Thank you for your help, but this is not exactly what i wanted to do.
I have a library (both .lib and .dll), and i have to link that library statically to my program (because i have to send the program to people without that .dll), but i don't know how to do it.
Jose Felix Hernandez
Hello,
I have done it, but when i try to run the program on the other computer the next message appears "no file mil.dll...", i want to link the library mil.lib statically to the project.
Thank you.
Best regards.
dave wrote:
On the "Project Settings" "Link" tab Category: Input enter the name of your lib file in "Object/library modules". Note that this field is "space separated".
Jose Felix Hernandez <jhe...@maxwell.fais.upm.es> wrote in message news:38478C25...@maxwell.fais.upm.es..."Martin Nolte [MS]" wrote:Hi Ruben, To build the static library:1. Build a static library using App Wizard "Win 32 Static Link Library" the settings of a static link library can be found in the MSDN article. Overview: Creating a Static Library. To link the static library to your exe choose one of the following ways:Thank you for your help, but this is not exactly what i wanted to do.
I have a library (both .lib and .dll), and i have to link that library statically to my program (because i have to send the program to people without that .dll), but i don't know how to do it.
Jose Felix Hernandez
Jose Felix Hernandez wrote:
Hello,
Thank you.
Best regards.dave wrote:
I have a library (both .lib and .dll), and i have to link that library statically to my program (because i have to send the program to people without that .dll), but i don't know how to do it.
--
Jose F. Hernandez Barrio
Universidad Politécnica de Madrid
c/ Ronda de Valencia, 3
28012 Madrid - Spain
Tel: +34 91 336 68 86
Neil Gilmore
export library. That means that mil.lib just contains references into
mil.dll. Linking (statically) with mil.lib just tells the program that it
needs mil.dll to run. You would still have to send the file mil.dll to
anyone who wants to run the program.
If I'm mistaking the problem, I sorry.
Neil Gilmore
ra...@raito.com