Thanks for the information about nm We're both using the same g++ -- and presumably the same boost & cygwin. I'm still at the same error. ... unless there are other suggestions, I guess I'll re-install cygwin and hope for the best.
With gratitude, Lewis On Sun, Jun 30, 2013 at 10:43 AM, marco atzeri <marco.atz...@gmail.com> wrote: > Il 6/30/2013 6:31 PM, Lewis S ha scritto: > >> Thanks Marco! >> >> I now get complaints about start_thread_noexcept: >> >> $ g++ -D THREADED multithread.cpp -l boost_system-mt -l boost_thread-mt > > > it works on my system, with > > $ g++ --version > g++ (GCC) 4.5.3 > > > >> >> /tmp/ccfP6V1v.o:multithread.cpp:(.text$_ZN5boost6thread12start_threadEv[boost::thread::start_thread()]+0xe): >> undefined reference to `boost::thread::start_thread_noexcept()' >> collect2: ld returned 1 exit status >> >> Can you (or anyone) tell me how to go from the "undefined reference" >> error to the name of the library to be loaded? > > > $ nm /usr/lib/libboost_thread-mt.dll.a |grep start_thread > 00000000 I __imp___ZN5boost6thread12start_threadEv > 00000000 T __ZN5boost6thread12start_threadEv > 00000000 I __imp___ZN5boost6thread12start_threadERKNS_17thread_attributesE > 00000000 T __ZN5boost6thread12start_threadERKNS_17thread_attributesE > > >> Do the -l argument themselves require an order? If so, how do I learn >> the required ordering (w/o trial&error) > > > -l requires an order if one library depends on a following one. > For your case both ways work > > g++ -D THREADED multithread.cpp -l boost_thread-mt -l boost_system-mt > > as there is no dependency between them > >> >> With gratitude, >> Lewis >> >> > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
