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02.01.2008 at 04:55AM PST, ID: 23129328
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Help: error LNK2019: unresolved external symbol

Tags: C++, error LNK2019: unresolved external symbol
I had the program in a single cpp file and have moved at the functions to seperate cpp's. Since doing that I received the following error when compiling the code. Any ideas on how to resolve that?

Generating Code...
Linking...
mkMainC.obj : error LNK2019: unresolved external symbol "void __cdecl mainEvent(enum PSH_Event,union PSH_EventIncoming *,void *)" (?mainEvent@@YAXW4PSH_Event@@PATPSH_EventIncoming@@PAX@Z) referenced in function _main
mkMainC.obj : error LNK2019: unresolved external symbol "long __cdecl listHandle(struct PSH_Connection *,enum PSH_Action,union PSH_MessageIncoming,void *)" (?listHandle@@YAJPAUPSH_Connection@@W4PSH_Action@@TPSH_MessageIncoming@@PAX@Z) referenced in function _main
QuoteHandlers.obj : error LNK2019: unresolved external symbol "void __cdecl UpdateTSFinvisionInfo(char *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,double,double)" (?UpdateTSFinvisionInfo@@YAXPADV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@NN@Z) referenced in function "void __cdecl FinvisionRecordHandle(struct PSH_SupplyObject *,void *)" (?FinvisionRecordHandle@@YAXPAUPSH_SupplyObject@@PAX@Z)
C:\SourceSafe Projects\Market View\BBTV2\Debug\BBTV2.exe : fatal error LNK1120: 3 unresolved externals

Many Thanks,

Josh
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Question Stats
Zone: Programming
Question Asked By: supersuny2k
Solution Provided By: Infinity08
Participating Experts: 2
Solution Grade: A
Views: 58
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02.01.2008 at 04:58AM PST, ID: 20796120

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02.01.2008 at 04:58AM PST, ID: 20796123

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02.01.2008 at 04:58AM PST, ID: 20796124

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02.01.2008 at 05:21AM PST, ID: 20796259

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02.01.2008 at 05:23AM PST, ID: 20796283

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02.01.2008 at 05:32AM PST, ID: 20796356

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02.01.2008 at 05:36AM PST, ID: 20796376

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02.01.2008 at 05:38AM PST, ID: 20796391

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02.01.2008 at 05:40AM PST, ID: 20796402

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02.01.2008 at 05:41AM PST, ID: 20796409

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02.01.2008 at 06:03AM PST, ID: 20796556

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02.13.2008 at 02:01PM PST, ID: 20888762

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02.13.2008 at 02:07PM PST, ID: 20888847

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02.01.2008 at 04:58AM PST, ID: 20796120

Rank: Genius

Did you add al lfiles to one project, and then rebuild the project ?

Did you include the correct header files ?

Can you show the code ? (All files preferrably)
Accepted Solution
 
02.01.2008 at 04:58AM PST, ID: 20796123

Rank: Sage

When you moved the functions to new files did you ensure you added these files to the project so they get compiled and the resultant translation units get linked into the final binary?
 
02.01.2008 at 04:58AM PST, ID: 20796124

Rank: Genius

al lfiles -> all files of course ;)
 
02.01.2008 at 05:21AM PST, ID: 20796259
Hi, Yes all files are under one project in VS 2005 and I have included all the header files.

Interestingly, if I remove the calls in the main() and one of the function which are listed in the error, the project complies

.
 
02.01.2008 at 05:23AM PST, ID: 20796283

Rank: Genius

>> Interestingly, if I remove the calls in the main() and one of the function which are listed in the error, the project complies

That's normal ;) If you removed the unresolved symbol, the linker doesn't have to look for it ... So, it doesn't throw the error either.

Can you show all your files ?
 
02.01.2008 at 05:32AM PST, ID: 20796356
Unfortunately, I can't but I have noticed something, if I change the functions or handlers to static if resolves the issue but cause other functions to have the same error.

Regards,

Josh
 
02.01.2008 at 05:36AM PST, ID: 20796376

Rank: Genius

>> Unfortunately, I can't

Why is that ?

Can you at least post the relevant parts of the code. The part of the main where the function is called, the part of the header file where the function is declared, the part of the .cpp file where the function is defined, as well as the header include at the top of the main.cpp file.
 
02.01.2008 at 05:38AM PST, ID: 20796391
Hi Infinity, I have fixed it I removed static from all the function names and it has worked....
 
02.01.2008 at 05:40AM PST, ID: 20796402

Rank: Genius

We could have told you that if we would have known what code you used ;) We're not clairvoyant heh.
 
02.01.2008 at 05:41AM PST, ID: 20796409

Rank: Genius

Can you still post the code I asked for to verify that the solution is good ?
 
02.01.2008 at 06:03AM PST, ID: 20796556

Rank: Sage

>> I removed static from all the function names and it has worked
Note: The use of static in this context is considered deprecated, prefer to use unnamed namespace.
http://msdn2.microsoft.com/en-us/library/yct4x9k5.aspx
 
02.13.2008 at 02:01PM PST, ID: 20888762

I have reopened the question so you can select the correct comment as the answer.
kb
Experts Exchange Moderator
 
02.13.2008 at 02:07PM PST, ID: 20888847

Rank: Sage

Cheers KB.
 
 
02.06.2008 at 03:43AM PST, ID: 20831152
The selected answer doesn't answer the question!
 
 
02.06.2008 at 04:34AM PST, ID: 20831391
Ooops... sorry select the wrong answer... my apologies - suppose to choose

"Did you add al lfiles to one project, and then rebuild the project ?

Did you include the correct header files ?"

as I was missing my header files in the end

Regards,
Josh
 
 
 
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