Hi Vicente, Here it is: $ g++ -o timer_5 -L/Data/Temp/Incoming/boost_1_51_0/stage/lib -lpthread -lboost_system -lboost_thread timer_5.cpp $ /tmp/ccClVUZf.o: In function `main': $ timer_5.cpp:(.text+0xb3): undefined reference to `boost::thread::~thread()' $ timer_5.cpp:(.text+0xe1): undefined reference to `boost::thread::~thread()' $ collect2: error: ld returned 1 exit status -- Daniel On 7 October 2012 16:55, Vicente J. Botet Escriba wrote:

Le 07/10/12 00:29, Daniel Santos a écrit :

Dear list,

I'm starting with boost (Boost.Asio) and I'm following the tutorial available at Boost.Asio web-page. I'm stuck at part 5 (Timer.5) because I'm getting the following linker error:

*timer_5.cpp:(.text+0xb3): undefined reference to `boost::thread::~thread()'* *timer_5.cpp:(.text+0xe1): undefined reference to `boost::thread::~thread()'* *collect2: error: ld returned 1 exit status*

I'm linking boost_system, boost_thread and pthread (I compiled the boost libraries and at some point I thought that I was including .hpp files from a different version of the libraries but I specified the paths of both .hpp and libraries and the problem remains). The system runs GNU/Linux 64bits (Fedora 17) with GCC 4.7.2 and boost 1.51.0.

Any idea?

Please, could you post the exact command line giving these errors?

Best, Vicente

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Finaly I solved it. It was a STUPID mistake. I defined the BOOST_ROOT (.bashrc) and I thought it was enough. I was wrong and gcc was "using" the headers from boost 1.48 and trying to link with the libs I've compiled, boost 1.51. I just added *-I/Data/Temp/Incoming/boost_1_51_0 *and it works. My original idea was using same headers with different possible libraries (Debug/Release)... Sorry for taking your time with a stupid "problem" like that one. Anyway, thank you for your time and help. * * Regards, *--* *Daniel * On 7 October 2012 19:26, Vicente J. Botet Escriba wrote:

Le 07/10/12 17:17, Daniel Santos a écrit :

Hi Vicente,

...

Here it is: $ g++ -o timer_5 -L/Data/Temp/Incoming/boost_1_**51_0/stage/lib -lpthread -lboost_system -lboost_thread timer_5.cpp $ /tmp/ccClVUZf.o: In function `main': $ timer_5.cpp:(.text+0xb3): undefined reference to `boost::thread::~thread()' $ timer_5.cpp:(.text+0xe1): undefined reference to `boost::thread::~thread()' $ collect2: error: ld returned 1 exit status

I don't see any -I . From where are you getting the

Boost header files? Could you post the example?

best, Vicente ______________________________**_________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/**mailman/listinfo.cgi/boost-**usershttp://lists.boost.org/mailman/listinfo.cgi/boost-users