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From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-03-22 04:55:15

Janusz Piwowarski wrote:

>> template<>
>> void validator<string>::operator()(any& v, const vector<string>& xs)
>> {
>> ....
>> }
>> Could you take a look if your 'build/Jamfile' mention that file?
> Yes, it mention it. Linker message:
> ..\..\.
> ERNS_3anyERKSt6vectorISsSaISsEE+0x14): In function `Z7reg_fooRKSs':
> example/custom_syntax.cpp:22: undefined reference to
> `boost::program_options::validator<std::string>::operator()(boost::any&,
> std::vector<std::string, std::allocator<std::string> > const&)'

Ok, more ideas:

1. Could you remove all bin directories and rebuild? Maybe, somehow, library
was not updated.

2. I presume you're using Boost.Build V1? Maybe, you can get preprocessed
version of custom_syntax.cpp with

   bjam -n -sBUILD="gcc <cxxflags>-save-temps"

and see if specialization for std::string is declared. Maybe, some other
header is used.

3. Does mingw has a tool to look at content of library/object file? On
linux, readelf might be used. If yes, it should be possible to look at
content of value_semantic.obj, the library and the referring file to figure
if necessary definition is provided. If there's no such tool, or you never
used it, you can send me the files (off-list, to reduce traffic), and I'll
take a look.

- Volodya

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