Re: [Boost-users] a newbie question

Hi Rene, Thanks very much. It worked. Tuan On 11/3/05, Rene Rivera wrote:

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.

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