Re: [Boost-users] Simple Linking Error

From: jayc.lawrence_at_[hidden]
Date: 2007-11-29 12:06:49

Hi Daniel,

I just did a little digging, regarding that particular error it has been 
suggested previously to add -pthread to your compile string. Could you 
give us more output like what other undefined references there are?

Jay

Daniel wrote:
> including the -I/path/to/boost seemed to do the trick, however, once I 
> started utilizing it (asio/date_time) I started getting things such as
> undefined reference to `pthread_detach'
> 
> Code directly taken from the tutorial here:
> http://asio.sourceforge.net/boost_asio_0_3_7/libs/asio/doc/tutorial/tuttimer1src.html
> 
> Is there a list of the exact library names in boost/asio?
> 
> On Nov 29, 2007 11:27 AM, <jayc.lawrence_at_[hidden] 
> <mailto:jayc.lawrence_at_[hidden]>> wrote:
> 
>     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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