Re: [Dev-C++] linking error in vc++

[<ind...@gm...>]

Dear Bhadram,

I am writing to you in response to your mail to the Dev-C++ user list.

 > Dear friends,
 >        I'd problem in vc++. The problem is i want to call the static
 > method of a class in another header file. But if im calling it is giving
 > linking error
 > error LNK2001: unresolved external symbol
 > [...] (rest of mail left out because of its longitude)

the problem you encountered is due to the fact that in this case, the
_word_map member of the class UserQuery is just the declaration, not the
definition.

The solution to that would be to create a new file, UserQuery.cpp, and
include following lines:

UserQuery.cpp:
#include "UserQuery.h"

map<string,vector<Location>*,less<string> >* UserQuery::_word_map = 0;

You could even leave out the '= 0', the only important thing is that
the symbol _word_map is DEFINED in a COMPILATION MODULE (which a
header file is not).

Hope that helps,
   Yours,
      David.



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