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Author Topic: [Fixed] Visual C++ - Linking error with /MT option.  (Read 14295 times)

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gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« on: April 21, 2010, 12:39:22 pm »
Hi, there. I'm using SFML 2.0 (rev. 1516) and Visual Studio 2008.

Before I use this, rev 1516, there is no error to compile.


Code: [Select]
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _abort already defined in LIBCMTD.lib(abort.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: ___iob_func already defined in LIBCMTD.lib(_file.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _fwrite already defined in LIBCMTD.lib(fwrite.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _ferror already defined in LIBCMTD.lib(feoferr.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _fflush already defined in LIBCMTD.lib(fflush.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _exit already defined in LIBCMTD.lib(crt0dat.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _sprintf already defined in LIBCMTD.lib(sprintf.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _longjmp already defined in LIBCMTD.lib(longjmp.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _getenv already defined in LIBCMTD.lib(getenv.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _malloc already defined in LIBCMTD.lib(dbgmalloc.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _free already defined in LIBCMTD.lib(dbgfree.obj)
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: __thiscall type_info::type_info(class type_info const &)" (??0type_info@@AAE@ABV0@@Z) already defined in LIBCMTD.lib(typinfo.obj)
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: class type_info & __thiscall type_info::operator=(class type_info const &)" (??4type_info@@AAEAAV0@ABV0@@Z) already defined in LIBCMTD.lib(typinfo.obj)



Yes, this is the problem "/MT" and "/MD" option to link.

But in the past, compiled with no error.

And I was found what extra library has changed to static library.

I think png.lib or jpeg.lib compiled with "/MD" option.

If this is correct, I don't want to use "/MD" option because it needs MFC DLL.

Is there another solution in this case?




FIX: not MFC DLL, it needs MSVCR90.dll.

Ashenwraith

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #1 on: April 21, 2010, 12:46:55 pm »
use code::blocks :wink:

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #2 on: April 21, 2010, 07:20:12 pm »
Everything is compiled using "Multithreaded [debug] DLL" (I guess it's /MT and /MTd). You shouldn't have any problem, the samples compile fine for example. Try "rebuild all" ;)

And why are you talking about MFC? You don't need any MFC DLL if you're not using MFC.
Laurent Gomila - SFML developer

gontai

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well.. it is strange.
« Reply #3 on: April 22, 2010, 02:14:59 am »
Oops.. My mistake what I guess that is mfc dll. I'm sorry this wrong information..   :cry:

When I compile /MD or /MDd("Multithreaded [debug] DLL"), it has problem MSVCR90.dll dependency that needs Microsoft Visual C++ Redistributable Package.

Maybe they(jpeg.lib, png.lib, soil.lib, and glew.lib) compiled /MD(d), but I want /MT(d)... OTL


The switch means ..

/MT  : Multi-Threaded
/MTd : Multi-Threaded Debug
/MD  : Multi-Threaded DLL
/MDd : Multi-Threaded Debug DLL

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #4 on: April 22, 2010, 09:34:55 am »
You can't use /MT if SFML is compiled with /MD. Just distribute the VC++ binaries, like every other project does. Almost everyone has theses files anyway.

Or you can recompile SFML with the /MT option.
Laurent Gomila - SFML developer

gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #5 on: April 22, 2010, 11:10:24 am »
I'm sorry that did not properly explain the situation is, because of my bad English. T-T

The error is when my program to use /MT, and SFML complied with /MT option.

But extLibs(jpeg.lib, png.lib, soil.lib, and glew.lib) are compiled with /MD(I guess)..

So SFML compile with /MT option is OK, because they just add extLibs.

But my program to use SFML, I met this errors.


Well, I just try to this extLibs to use /MT option, get the sources from internet, and compiled. And then replace in the SFML's extLibs, my program is compiled with no error(with some warnings).

How about this? ExtLibs compile with /MT option. Then the program compiled fine with any options(/MT(d) or /MD(d)). In the past everything is fine because extLibs(jpeg.lib, png.lib, soil.lib, glew.lib) were not static library.



Thank you for read this article.

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #6 on: April 22, 2010, 11:59:05 am »
External libs are compiled with the same options as the SFML libraries. And like I already said, the SFML samples compile and link with no error -- did you try to compile them?
Laurent Gomila - SFML developer

gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #7 on: April 22, 2010, 05:42:51 pm »
When SFML compile is no problem with any options(/MT or not), but using SFML that compiled with /MT option has a problem.


Try this, in order please.

1. SFML libraries changes to /MT(d) option and compile, because the program(in this, I will use sample win32 for example) want to /MT(d) option.

   - no error.

2. win32 sample changes to /MT(d) option and compile .

   - link error.

3. jpeg.lib, png.lib, soil.lib and glew.lib compile with /MT option.

4. SFML libraries compile with /MT or /MD option.

   - no error.

5. win32 sample compile with same SFML option.

   - no error.



The point is I want to compile with /MT but I can't.

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #8 on: April 22, 2010, 06:29:39 pm »
Ok I see!

So you want to (re)compile everything with /MT.

If it works when you recompile the external libs with /MT, then use this modified version. What do you want me to do exactly?
Laurent Gomila - SFML developer

gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #9 on: April 23, 2010, 03:16:37 am »
That's right.

Maybe SFML library and samples with /MD option work correctly, even if the External libraries(jpeg.lib, png.lib, soil.lib and glew.lib) compile with /MT option.


I think, there is two way.

1. The external libs are integrated to the source code like before, or the source code and their project files.

2. The external libs compile with /MT option.



Thank you for reading this, again.

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #10 on: April 23, 2010, 08:36:26 am »
May I ask why you want to compile with /MT?
Laurent Gomila - SFML developer

gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #11 on: April 23, 2010, 09:42:41 am »
I want to work like this.

http://groups.google.co.kr/group/microsoft.public.vc.language/msg/0f59d7a560a0cbdc?pli=1


/MD option needs MSVCRxx.dll.

If there is no MSVCRxx.dll, the target machine has to install Microsoft Visual C++ Redistributable Package.

Laurent

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #12 on: April 23, 2010, 10:34:28 am »
Ok I see. Anyway, I can't help you, I'm sorry. You will have to create projects for the external libraries and compile them yourself with the proper options.
Laurent Gomila - SFML developer

gontai

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[Fixed] Visual C++ - Linking error with /MT option.
« Reply #13 on: April 23, 2010, 11:45:59 am »
Ok. Thank you. I'll try.  8)

 

anything