Re: [Boost-users] a newbie question

Tuan A. Tran wrote:

I am a newbie. I would like to run a simple threaded program using boost. I got a sample file see below and compile with the following command g++ simple.cpp -lthread

I got error //// In file included from /usr/include/boost/thread/detail/config.hpp:18, from /usr/include/boost/thread/thread.hpp:15, from /usr/include/boost/thread.hpp:15, from simple.cpp:9: /usr/include/boost/config/requires_threads.hpp:47:5: #error "Compiler threading support is not turned on. Please set the correct command line options for threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)" [...] If I use commend g++ simple.cpp -pthread I got error //////// /tmp/cchxK5CW.o(.text+0x66): In function `main': : undefined reference to `boost::thread::thread[in-charge](boost::function0boost::function_base > const&)' /tmp/cchxK5CW.o(.text+0x9d): In function `main': : undefined reference to `boost::thread::join()' /tmp/cchxK5CW.o(.text+0xa8): In function `main': : undefined reference to `boost::thread::~thread [in-charge]()' /tmp/cchxK5CW.o(.text+0xc2): In function `main': : undefined reference to `boost::thread::~thread [in-charge]()' collect2: ld returned 1 exit status ///////////

I do not know what went wrong. Can anyone tell me what I did wrong? How should I correct so that I can compile this example?

You also need to link to the compiled Boost.Thread library. Adding "-lboost_thread" might work. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - Grafik/jabber.org