Re: [Boost-users] Simple Linking Error

From: jayc.lawrence_at_[hidden]
Date: 2007-11-29 11:27:07

Hi Daniel,

Where were your boost header files and libraries compiled to? I had 
similar issues and John Maddock helped me solve a path issue. Try adding

-I/path/to/boost

to your compile string e.g

g++ -v -s -I/path/to/boost myfile.cpp -o myfile.exe

you might need to add the relevant -lboost_library_name_goes_here to the 
end of that compile string, where boost_library_name_goes_here is the 
name of the library you are using.

I thought this would be easier on linux than windows to be honest and 
here you are having some problems !

Hope this helps.

Jay

Daniel wrote:
> I wrote a simple "Hello, world!" program to test if boost/asio was 
> working correctly:
> 
> #include <iostream>
> #include <boost/date_time/posix_time/posix_time.hpp>
> 
> int main()
> {
>   std::cout << "Hello, world!\n";
>   return 0;
> }
> 
> But, I get this: (GCC C++ 4.1.2/Linux version 2.6.22-gentoo-r8)
> test.cpp:(.text+0x10b): undefined reference to 
> `boost::system::get_system_category()'
> test.cpp:(.text+0x115): undefined reference to 
> `boost::system::get_posix_category()'
> test.cpp:(.text+0x11f): undefined reference to 
> `boost::system::get_posix_category()'
> test.cpp:(.text+0x129): undefined reference to 
> `boost::system::get_system_category()'
> 
> 
> This happens when I used '#include 
> <boost/date_time/posix_time/posix_time.hpp>'
> I can't figure out what I'm missing
> 
> 
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