未解决的外部符号错误仅在64位模式下发生，而在32位版本中不发生 [英] Unresolved external symbol error occurring only in 64-bit mode and not in 32-bit build
问题描述
我有一个VC ++代码(使用VS2008构建)，该代码利用了一些静态库(* .lib文件在编译时静态链接).
为便于理解，我们将我的EXE代码称为"AAA.EXE"&将lib文件称为"A.lib"，b.lib等...
AAA.EXE代码和静态库代码都是使用VS2008构建的.
我看到我的"AAA.EXE"在32位版本中工作正常，并且在以64位模式构建AAA.EXE时显示以下链接器错误.
我当然已经在64位模式下重建了静态库，并在AAA.EXE中提供了lib路径，例如:::对应于AAA.EXE的项目配置属性->链接器->常规/输入". /p>
这个链接器错误确实困扰了我很长时间.任何帮助是极大的赞赏.
Logger.lib(Loggerr.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall CWTTLogger::CWTTLogger(void)" (__imp_??0CWTTLogger@@QAE@XZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CWTTLogger::~CWTTLogger(void)" (__imp_??1CWTTLogger@@UAE@XZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionA(unsigned short *,long *)" (__imp_?FunctionA@CWTTLogger@@QAEJPAGPAJ@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionB(unsigned short *,long)" (__imp_?FunctionB@CWTTLogger@@QAEJPAGJ@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionC(unsigned short *,unsigned long,unsigned short *,long)" (__imp_?FunctionC@CWTTLogger@@QAEJPAGK0J@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __cdecl CWTTLogger::FunctionD(unsigned long,long,...)" (__imp_?FunctionD@CWTTLogger@@QAAJKJZZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionE(unsigned short *,long)" (__imp_?FunctionE@CWTTLogger@@QAEJPAGJ@Z)
1>C:\Users\User1\Documents\XYZ\Code\64bit\aaa.exe: fatal error LNK1120: 7 unresolved externals
还可以添加::
我对设置进行了2处更改，以使我的AAA.exe代码从32位变为64位:: 1)
2)
当然，该代码与32位& 64位. VC2008中的这两项设置更改是否已完成，以使32位AAA.exe代码成为64位版本?
通过查看另一个stackoverflow链接，我看到项目配置属性->链接器->高级->目标计算机默认为"未设置"中还有一个设置. 并且如果我使目标计算机=="MACHINEx64"，则会收到另一种错误，该错误与我之前的::: p
严重错误LNK1112:模块机器类型'X86'与目标冲突 机器类型"x64""
我是否应该将链接器选项中的目标计算机"字段设置为未设置"或"MACHINEx64"，确实不明确?
如果是是"，我需要弄清楚如何解决该问题.
从外观上看，您仅将项目的一半更改为x64，其余的保留为Win32.由于您没有显示项目的依赖关系，因此很难猜测这是否是一个问题……无论如何，要使编译成功，您必须将所有依赖项目(库)都切换到x64！ >
I have a VC++ code (built using VS2008), which makes use of some static libraries (*.lib files linked statically during compile time).
For ease of understanding let's refer my EXE code as "AAA.EXE" & refer the lib files as "A.lib", b.lib etc...
Both the AAA.EXE code and static libraries code are built using VS2008.
I see that my "AAA.EXE" is working fine in 32-bit version and showing the below linker errors when AAA.EXE is built in 64-bit mode.
I have of course rebuilt the static libraries in 64-bit mode and provided the lib path in my AAA.EXE like this :: "Project Configuration Properties corresponding to AAA.EXE -> Linker -> General/Input".
This linker error is really bothering me form a long time. Any help is greatly appreciated.
Logger.lib(Loggerr.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall CWTTLogger::CWTTLogger(void)" (__imp_??0CWTTLogger@@QAE@XZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CWTTLogger::~CWTTLogger(void)" (__imp_??1CWTTLogger@@UAE@XZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionA(unsigned short *,long *)" (__imp_?FunctionA@CWTTLogger@@QAEJPAGPAJ@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionB(unsigned short *,long)" (__imp_?FunctionB@CWTTLogger@@QAEJPAGJ@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionC(unsigned short *,unsigned long,unsigned short *,long)" (__imp_?FunctionC@CWTTLogger@@QAEJPAGK0J@Z)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __cdecl CWTTLogger::FunctionD(unsigned long,long,...)" (__imp_?FunctionD@CWTTLogger@@QAAJKJZZ)
1>Logger.lib(Logger.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: long __thiscall CWTTLogger::FunctionE(unsigned short *,long)" (__imp_?FunctionE@CWTTLogger@@QAEJPAGJ@Z)
1>C:\Users\User1\Documents\XYZ\Code\64bit\aaa.exe: fatal error LNK1120: 7 unresolved externals
Also to add ::
I have done 2 changes in the settings to make my AAA.exe code 64-bit from 32-bit:: 1)
2)
Ofcourse the code is compatible for both 32-bit & 64-bit. Are these 2 settings changes in VC2008 complete for making the 32-bit AAA.exe code 64-bit build?
By looking at another stackoverflow link I see there is one more settoing in "Project Configuration properties -> Linker-> Advanced-> Target machine is default to "not set" and if I make target machine == "MACHINEx64", I get a different sort of error which I was getting earlier ::
"fatal error LNK1112: module machine type 'X86' conflicts with target machine type 'x64'"
I'm really not having a clarity on if I should be setting the "Target machine" field in linker option as "Not Set" or "MACHINEx64"?
If it's a "YES", I need to figure out how to fix the problem.
From the looks of it, you're only changing half of your projects to x64 and leave the rest to Win32. Since you don't show your project's dependencies, its hard to guess if that's a problem or not ... in any case, for compilation to succeed you'll have to switch all of the dependent projects (libs) to x64!
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