Re: [Boost-users] Error in compiling Boost thread example

i have more information about my problem: I have add '-L/usr/lib' as my library path during linking and i make sure i have 'libboost_thread*' library in '/usr/lib', but it still does not work. Any idea why? g++ -L/usr/lib -o"sandbox" ./thread.o ./thread.o: In function `__tcf_1':../thread.cpp:9: undefined reference to `boost::mutex::~mutex()' ./thread.o: In function `__static_initialization_and_destruction_0':../thread.cpp:9: undefined reference to `boost::mutex::mutex()' ./thread.o: In function `main':../thread.cpp:90: undefined reference to `boost::thread::thread(boost::function0boost::function_base > const&)' :../thread.cpp:91: undefined reference to `boost::thread::thread(boost::function0boost::function_base > const&)' :../thread.cpp:92: undefined reference to `boost::thread::join()' :../thread.cpp:93: undefined reference to `boost::thread::join()' :../thread.cpp:94: undefined reference to `boost::thread::~thread()' :../thread.cpp:94: undefined reference to `boost::thread::~thread()' :../thread.cpp:94: undefined reference to `boost::thread::~thread()' :../thread.cpp:94: undefined reference to `boost::thread::~thread()' here is my /usr/lib content: $ ls -la libboost_thread.* -rwxr-xr-x 1 root root 68644 Feb 16 2006 libboost_thread.a* lrwxrwxrwx 1 root root 25 Jan 5 16:03 libboost_thread.so -> libboost_thread.so.1.33.1* -rwxr-xr-x 1 root root 43236 Feb 16 2006 libboost_thread.so.1.33.1* lrwxrwxrwx 1 root root 25 Jan 5 16:03 libboost_thread.so.2 -> libboost_thread.so.1.33.1* $ pwd /usr/lib Thank you for any help. On 2/3/07, Meryl Silverburgh wrote:

Hi,

I am trying to compile the boost thread that I found here: http://www-eleves-isia.cma.fr/documentation/BoostDoc/boost_1_29_0/libs/threa...

But i get the following error:

Can you please tell me what do i need to do to fix it?

./thread.o: In function `main':../thread.cpp:27: undefined reference to `boost::thread::thread(boost::function0boost::function_base > const&)' :../thread.cpp:28: undefined reference to `boost::thread::join()' :../thread.cpp:28: undefined reference to `boost::thread::~thread()' :../thread.cpp:28: undefined reference to `boost::thread::~thread()' ./thread.o: In function `thread_alarm::operator()()':../thread.cpp:11: undefined reference to `boost::xtime_get(boost::xtime*, int)' :../thread.cpp:14: undefined reference to `boost::thread::sleep(boost::xtime const&)' collect2: ld returned 1 exit status make: *** [sandbox] Error 1 make: Target `all' not remade because of errors. Build complete for project sandbox