I have a DLL-project that compiles, links and works fine with Visual Studio 6.
Now I have loaded it into Visual Studio 2010. During import of the old .dsp file VS2010 asked me for conversion to .vcxproj file. After that I try to compile the newly converted project but stumble upon this strange linker error in debug build:
error LNK2019: unresolved external symbol __imp___CrtDbgReportW referenced in function "public: struct oapc_bin_head * const & __thiscall std::_Deque_const_iterator<struct oapc_bin_head *,class std::allocator<struct oapc_bin_head *> >::operator*(void)const " (??D?$_Deque_const_iterator#PAUoapc_bin_head##V?$allocator#PAUoapc_bin_head###std###std##QBEABQAUoapc_bin_head##XZ)
The _DEBUG compile switch is defined in debug mode as well as NDEBUG in release mode. Amazingly in release mode the error is quite different:
error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl std::_Xlength_error(char const *)" (__imp_?_Xlength_error#std##YAXPBD#Z) referenced in function "protected: void __thiscall std::deque<struct oapc_bin_head *,class std::allocator<struct oapc_bin_head *> >::_Xlen(void)const " (?_Xlen#?$deque#PAUoapc_bin_head##V?$allocator#PAUoapc_bin_head###std###std##IBEXXZ)
Any ideas what got lost during project file conversion?
Thanks!
It looks like you have some sort of problem with linking to the std dll.
It can be something like building one of the two in x64 and the other in x86, just not adding the dll to your link or something similar to that.
can you post the linker command the visual studio uses?
Related
I am migrating my project from Visual Studio 2012 to 2017. I have selected Windows sdk V 10.0.17763.0 and and platform toolset as Visual Studio 2017 (v141) for all the projects in a solution. and target WINVER 0x0601 . Apart from this i have not made any changes .When I compile all the projects compile but i get error during Linking .There around 400 errors .I am linking the source files of static library files which belongs to other project (Added in additional include directories).Looks like most of the errors are coming from files that belongs to that project. I have even changed the toolset/sdk settings for that project. I am pretty much stuck .Unable to find out the root cause for this error .
Error LNK2019 unresolved external symbol "void __cdecl RemoveRefForStatic(class GlobalSignalSourceInfo *)" (??$RemoveRefForStatic#VGlobalSignalSourceInfo####YAXPAVGlobalSignalSourceInfo###Z) referenced in function "public: __thiscall ATL::CAtlComModule::CAtlComModule(void)" (??0CAtlComModule#ATL##QAE#XZ) CSMediaPlayer D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface\CSMediaEngine.lib(StdAfx.obj)
Error LNK2019 unresolved external symbol "void cdecl AddRefForStatic(class GlobalSignalSourceInfo *)" (??$AddRefForStatic#VGlobalSignalSourceInfo####YAXPAVGlobalSignalSourceInfo###Z) referenced in function "long __stdcall ATL::AtlWinModuleTerm(struct ATL::_ATL_WIN_MODULE70 *,struct HINSTANCE *)" (?AtlWinModuleTerm#ATL##YGJPAU_ATL_WIN_MODULE70#1#PAUHINSTANCE__###Z) CSMediaPlayer D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface\CSMediaEngine.lib(StdAfx.obj) 1
Error LNK2001 unresolved external symbol "void __cdecl RemoveRefForStatic(class GlobalSignalSourceInfo *)" (??$RemoveRefForStatic#VGlobalSignalSourceInfo####YAXPAVGlobalSignalSourceInfo###Z) CSMediaPlayer D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface\CSLib.lib(criticalsection.obj) 1
Error LNK1120 18 unresolved externals CSMediaPlayer D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface\Debug D:\CoolSign\trunk\Development\common\2008\CSMediaPlayer_CEF\COMInterface\Debug\CSMediaPlayer.dll 1
I'm trying to use the Q_OBJECT macro in my Visual Studio 2010 Ultimate project, and it gives me unresolved external errors:
1>Application.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall MyButton::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall#MyButton##UAEHW4Call#QMetaObject##HPAPAX#Z)
1>Application.obj : error LNK2001: unresolved external symbol "public: virtual void * __thiscall MyButton::qt_metacast(char const *)" (?qt_metacast#MyButton##UAEPAXPBD#Z)
1>Application.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall MyButton::metaObject(void)const " (?metaObject#MyButton##UBEPBUQMetaObject##XZ)
I've had a similar project using QMaker, and solved it by doing clean project and re-running qmake. The thing is, there's no "Qmake" button in VS!
I have read few articles like this one and done everything they told me to. Though it didnt really help, because I've got an existing project of a few .cpp and a few header files, and I would like to avoid creating a .pro file and moving code into it.
I've installed VS Qt add-in, it gave me new cool "Qt" button on VS panel, though didn't help with unresolved externals (probably I don't know how to use it properly).
I have ran moc with via custom build tool in VS on my Application.h file (the only one that has Q_OBJECT), but that still didn't help:
C:\Utilities\QtSDK\Desktop\Qt\4.8.1\msvc2010\bin\moc Application.h -o tmp\moc\moc_Application.cpp
What might cause my problem and how do I solve it?
I would guess that you forgot to add the file generated by MOC (moc_Application.cpp in this case) into your Visual Studio project. You have to do this to make sure it gets built. I'm pretty sure this should resolve the linker errors you see.
I need to use WebRTC in VS 2005. As far as I've found out, I need VS 2005 SP1 for this purpose. Otherwise, two link errors appear all the time:
LIBCMTD.lib(stdexcpt.obj) : error LNK2005: "public: virtual __thiscall std::exception::~exception(void)" (??1exception#std##UAE#XZ) already defined in SwitchingSampRate.obj
LIBCMTD.lib(stdexcpt.obj) : error LNK2005: "public: virtual char const * __thiscall std::exception::what(void)const" (?what#exception#std##UBEPBDXZ) already defined in SwitchingSampRate.obj
I can't install SP1 for some reason. So to avoid these errors, I tried to build WebRTC lib-files in VS 2010 and then to link them to my VS 2005 solution. However, this brings about other kinds of errors and warnings (this is in 2005, again):
warning LNK4229: invalid directive '/FAILIFMISMATCH:_MSC_VER=1600' encountered; ignored
error LNK2001: unresolved external symbol "void __cdecl std::_Xlength_error(char const *)" (?_Xlength_error#std##YAXPBD#Z)
unresolved external symbol "void (__cdecl* std::_Raise_handler)(class stdext::exception const &)" (?_Raise_handler#std##3P6AXABVexception#stdext###ZA)
I wonder, if these errors could be avoided, so that I could use the libs generated in VS 2010 in my VS 2005 project.
You can't link libs to a program built with another version of visual studio.
I use CS106 library in the university.After changing Visual Studio 2008 with Visual Studio 2010, I have problems with building new projects or the old ones.I think that new Visual studio is not compatible with CS106 library.Can anyone tell how to fix this problem?
This is the output:
1>------ Build started: Project: Blank, Configuration: Debug Win32 ------
1>Build started 3/15/2011 2:03:21 PM.
1>InitializeBuildStatus:
1> Touching "Debug\Blank.unsuccessfulbuild".
1>ClCompile:
1> All outputs are up-to-date.
1>CS106CPPLib.lib(strutils.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(simpio.obj) : error LNK2019: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran#_String_base#std##SAXXZ) referenced in function "public: class std::basic_string,class std::allocator > & __thiscall std::basic_string,class std::allocator >::assign(class std::basic_string,class std::allocator > const &,unsigned int,unsigned int)" (?assign#?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##QAEAAV12#ABV12#II#Z)
1>CS106CPPLib.lib(genlib.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(init.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(pcgraphics.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(strutils.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(simpio.obj) : error LNK2019: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen#_String_base#std##SAXXZ) referenced in function "protected: bool __thiscall std::basic_string,class std::allocator >::_Grow(unsigned int,bool)" (?_Grow#?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##IAE_NI_N#Z)
1>CS106CPPLib.lib(genlib.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(init.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(pcgraphics.obj) : error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen#_String_base#std##SAXXZ)
1>CS106CPPLib.lib(simpio.obj) : error LNK2019: unresolved external symbol "private: static void __cdecl std::locale::facet::facet_Register(class std::locale::facet *)" (?facet_Register#facet#locale#std##CAXPAV123##Z) referenced in function "public: void __thiscall std::locale::facet::_Register(void)" (?_Register#facet#locale#std##QAEXXZ)
1>CS106CPPLib.lib(strutils.obj) : error LNK2001: unresolved external symbol "private: static void __cdecl std::locale::facet::facet_Register(class std::locale::facet *)" (?facet_Register#facet#locale#std##CAXPAV123##Z)
1>CS106CPPLib.lib(simpio.obj) : error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF#std##3JB)
1>CS106CPPLib.lib(strutils.obj) : error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF#std##3JB)
1>Debug\Blank.exe : fatal error LNK1120: 4 unresolved externals
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.97
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Here is the solution:
http://melbsdailydigest.blogspot.com/
1.) Download one of the latest projects from the Stanford CS106B Website:
CS106B Assignment 1
2.) Unzip the project and find its subdirectory \CS106. This is the folder that contains all the library (CS106CPPLib.lib) and header files for the CS106 program.
3.) Copy this folder as a subdirectory to one of your assignment folders (ex. C:\Assignment1\CS106.
4.) Startup Visual Studio2008 and click File->New->Project… When given the choice choose to create a new Console program.
5.) You’ll then be presented with a new project with multiple files including stdafx.h, stdafx.cpp and similarly named files for whatever you named your project when prompted earlier. DELETE/ REMOVE all these files from the project.
6.) Right click the Source File Folder and choose Add->Existing Item… Choose the first assignment file (Assign1warmup.cpp).
7.) If you compile at this point you’ll realize that it’s still looking for the stdafx.h precompiled header. Let’s fix that. Go to Project->Assignment1 Properties… (or whatever your project might be named). Go to the option in the “tree” menu for Configuration Properties->C/C++->Pre-Compiled Headers . Under the option for Create/Use Precompiled header, choose the drop down option for Not Using Precompiled headers.
8.) While you’re in this section, take the time now to also select the location for the header files for this project. Under the Configuration Properties->C/C++->General section choose the Additional Include Directories option and use the … to browse and select the CS106 folder that you copied to your project folder earlier.
9.) One last thing you should change here is in the Configuration Properties->C/C++->Code Generation section. Change the default (which I believe is for a Multi-Threaded Debug .DLL) to just Multi-Threaded Debug (or just Multi-Threaded if you are doing your release build).
10.) Lastly, we’ll need to let the linker know where to find the CS106 library file. To do that you’ll need to make 2 additional settings. One is in the Configuration Properties->Linker->General section where you can select the location of your additional library files in the section titled appropriately enough – “Additional Library Directories”. You’ll also need to add your library to the project through the “Additional Dependencies” section which is under Configuration Properties->Linker->Input. Just type in CS106CPPLIB.lib.
Note: I found that there seems to be some difference in the menus you get and the settings that get saved depending on what your selection is at the moment in the solution Explorer Window. I originally made all my changes while I was selecting the actual source file, but there were no linker menus at that point. I had to move up to the Source File Folder level to get additional menus where I could set my linker options. Also important to note is that if you make your settings at the lower level (ie. Cpp file) they seem to supersede whatever is set in the level above it.
At this point the project should correctly build with the selection of the Build->Rebuild Solution command.
Happy programming!
The source code would help to fix this. But....did you add #include <string> at the top of the file producing the errors?
I can't statically link hunspell library to my C++ project in Visual Studio 2010.
I downloaded hunspell and went to hunspell-1.3.1\src\win_api folder. I opened libhunspell.vcproj file in visual studio 2010 and converted project. I built solution in Realease configuration and it generated "libhunspel.lib" file in hunspell-1.3.1\src\win_api\Release\libhunspell folder.
In my simple C++ console program that use hunpell:
I added this folder with libhunspel.lib file in Property Pages/Configuration Properties/VC++ Directories/Library Directories
I added "hunspell-1.3.1\src\" folder to Property Pages/Configuration Properties/VC++ Directories/Include Directories
and "libhunspell.lib" to Property Pages/Linker/Input/Additional Dependancies.
But it still gives me unresolved external symbol error:
Error 2 error LNK2019: unresolved external symbol "__declspec(dllimport) public: int __thiscall Hunspell::spell(char const *,int *,char * *)" (__imp_?spell#Hunspell##QAEHPBDPAHPAPAD#Z) referenced in function _main C:\Users\Me\Documents\Visual Studio 2010\Projects\hunspell_learning\hunspell_learning\main.obj hunspell_learning
Error 3 error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall Hunspell::Hunspell(char const *,char const *,char const *)" (__imp_??0Hunspell##QAE#PBD00#Z) referenced in function _main C:\Users\Me\Documents\Visual Studio 2010\Projects\hunspell_learning\hunspell_learning\main.obj hunspell_learning
Error 1 error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall Hunspell::~Hunspell(void)" (__imp_??1Hunspell##QAE#XZ) referenced in function _main C:\Users\Me\Documents\Visual Studio 2010\Projects\hunspell_learning\hunspell_learning\main.obj hunspell_learning
Error 4 error LNK1120: 3 unresolved externals C:\Users\Me\Documents\Visual Studio 2010\Projects\hunspell_learning\Debug\hunspell_learning.exe 1 1 hunspell_learning
I don't have idea what can be wrong. I also tries with dynamic library. Built Hunspell solution in Release_dll configuration and just changed Include Directories in my app to hunspell-1.3.1\src\win_api\Release_dll\libhunspell and it compiles. I only need to copy libhunspell.dll where my executable program is so dll will be loaded.
You need to put "#define HUNSPELL_STATIC" somewhere in your stdafx.h.