RE: Problems converting std::string to LogString

Hi,
911!
Any acknowledgement or help highly appreciated. 
I have come to a point where I cannot think of anything
anymore to
resolve this mundane issue.
I am sure, I am forgetting or overlooking something very
silly.
______________________________

Thanks
Devang Kamdar


-----Original Message-----
From: Kamdar, Devang (MLITS) 
Sent: Monday, November 19, 2007 10:18 PM
To: Log4CXX User
Subject: Problems converting std::string to LogString


Hi,

I am using the 0.10 version (dll) for log4cxx and when I am
trying to
call following function:
outputLogString =
log4cxx::helpers::Transcoder::decode(output);

I am getting below linker error!

Error	7	error LNK2019: unresolved external symbol
"__declspec(dllimport) public: static class
std::basic_string<wchar_t,struct
std::char_traits<wchar_t>,class
std::allocator<wchar_t> > __cdecl
log4cxx::helpers::Transcoder::decode(class
std::basic_string<char,struct
std::char_traits<char>,class
std::allocator<char> > const &)"
(__imp_?decodeTranscoderhelperslog4cxxSA?AV?$basic_string_WU?$char
_traits_WstdV?$allocator_W2stdABV?$basic_stringDU?$char_trait
sDstdV?$allocatorD25Z) referenced in function "public:
virtual
void __thiscall
com::ml::mllog4cxx::jms::SOALoggerLayout::format(class
std::basic_string<wchar_t,struct
std::char_traits<wchar_t>,class
std::allocator<wchar_t> > &,class
log4cxx::helpers::ObjectPtrT<class
log4cxx::spi::LoggingEvent> const &,class
log4cxx::helpers::Pool &)const
"
(?formatSOALoggerLayoutjmsmllog4cxxmlcomUBEXAAV?$basic_string_WU
?$char_traits_WstdV?$allocator_W2stdABV?$ObjectPtrTVLoggingEv
entspilog4cxxhelperslog4cxxAAVPool9log4cxxZ)
soaloggerlayout.obj	
Can some one please help resolve this?

I am using this method as advised in thread
http://marc.info/?l=log4cxx-user&m=11781653811
4449&w=2

Also is there a way or a short tutorial / book that can
explain how to
interpret these linker errors as I do get these very often.


Also I am attaching the build.htm from Visual Studio 2005
(Pro) 
 
Please let me know if you need any additional info.
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On Nov 21, 2007, at 3:30 AM, Kamdar, Devang ((MLITS))
wrote:

> Hi,
> 911!
> Any acknowledgement or help highly appreciated.
> I have come to a point where I cannot think of anything
anymore to
> resolve this mundane issue.
> I am sure, I am forgetting or overlooking something
very silly.
> ______________________________
>
> Thanks
> Devang Kamdar
>


DLL exported templated functions are touchy.  I wasn't able
to  
reproduce the problem, but went ahead and simplified
transcoder to  
eliminate the exposed templated function definitions in rev
597066.   
If that doesn't work, try using the core function directly:

void Transcoder::decode(const char* src, size_t srcLen,
LogString&)

If that doesn't work, open the DLL with Depends (in the
start menu  
under Visual Studio/Tools) and check that the function
appears in the  
export table for the DLL (around ordinal 1548 in mine).