Re: [Boost-users] Problem with boost::program_options

From: Mikko Vainio (mivainio_at_[hidden])
Date: 2007-12-31 04:42:28

Try adding
-lboost_program_options
to the g++ command line options.

/Mikko

Eswar K wrote:
> Hi,
> 
> I am a newbie to Boost. I am writing a sample code using the Boost 
> libaries and am getting the following error during linking.
> 
> _*Command Line Usage *_
> *
> */g++   -I /usr/include/boost/  example.cpp -o example.o/
> 
> _*Code*_
> 
> /#include <boost/lambda/lambda.hpp>
> #include <iostream>
> #include <iterator>
> #include <algorithm>
> #include <boost/program_options/options_description.hpp>
> #include <boost/program_options/positional_options.hpp>
> #include <boost/program_options/variables_map.hpp>
> #include <boost/program_options/parsers.hpp>
> 
> 
> #include <cstdlib>
> #include <iostream>
> #include <iomanip>
> #include <map>
> #include <string>
> 
> using namespace boost::program_options;
> //namespace po = boost::program_options;
> 
> int main()
> {
>     using namespace boost::lambda;
>   //  using namespace boost::program_options;
>     typedef std::istream_iterator<int> in;
> 
>     std::for_each(
>         in(std::cin), in(), std::cout << (_1 * 3) << " " );
>     option_description opts;
> }
> /
> _*Error Message*_
> 
> /tmp/ccO0HWa7.o(.text+0xb0): In function `main':
> example.cpp: undefined reference to 
> `boost::program_options::option_description::option_description()'
> /tmp/ccO0HWa7.o(.text+0xbf): example.cpp: undefined reference to 
> `boost::program_options::option_description::~option_description()'
> collect2: ld returned 1 exit status
> 
> $LD_LIBRARY_PATH has the following value set.  
> /home/suhas/boost/lib:/usr/lib:/usr/include/boost/
> 
> I am stuck, any help will be really appreciated.
> 
> Thanks in advance.
> 
> Regards,
> Eswar
> 
> 
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> 
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