Re: [Boost-users] simple thread program hardtocompile/link with 1.46.1

Subject: Re: [Boost-users] simple thread program hardtocompile/link with 1.46.1
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-05-22 11:05:02

AMDG

On 05/21/2011 11:23 PM, Eric Lin wrote:
> Dear boost program(for c++,(or g++)):
>   after I download 1.46.1 and try to base on it to compile a simple 
> program from book C++cookbook, at page 447, 12.1 Creating a Thread

You need to build the thread library.  See
http://www.boost.org/more/getting_started/unix-variants.html
If you've already compiled the library, try -lboost_thread.
If you didn't install the libraries to a system
location, then you'll also need -L/path/to/compiled/libraries

> ----------
> 
> // example 12-1. Creating a thread
> #include <iostream>
> #include <boost/thread/thread.hpp>
> #include <boost/thread/xtime.hpp>
> 
> struct MyThreadFunc {
>   void operator()() {
>     // Do something long-running...
>   }
> } threadFun;
> 
> int main() {
>   boost::thread myThread(threadFun);  // Create a thread that starts
>                                       // running threadFun
>   boost::thread::yield();             // give up the main thread's timeslice
>                                       // so the child thread can get some work
>                                       // done.
> 
>   // Go do some other work...
> 
>   myThread.join();            // The current (i.e., main) thread will wait
>                               // for myThread to finish before it returns
> }
> 
> -----------------------------------------------------------
> 
> eric_at_eric-laptop:~/cppcookbook$ ls
> example12-1.cpp
> eric_at_eric-laptop:~/cppcookbook$ g++ -I/home/eric/boost1/boost_1_46_1/ example12-1.cpp -lboost_thread-mt
> /usr/bin/ld: cannot find -lboost_thread-mt
> collect2: ld returned 1 exit status
> eric_at_eric-laptop:~/cppcookbook$ g++ -I/home/eric/boost1/boost_1_46_1/ example12-1.cpp -lboost
> /usr/bin/ld: cannot find -lboost
> collect2: ld returned 1 exit status
> eric_at_eric-laptop:~/cppcookbook$ cd ../boost1/boost_1_46_1/
> eric_at_eric-laptop:~/boost1/boost_1_46_1$ 
> 
> --------------------------
> 
> I am in Ubuntu linux 10.04, g++ 4.4.3
> 
> looking to see any suggestion and thanks a lot in advance, Eric Lin, Us citizen, in Los Angeles
> I am glad to meet anyone in Los Angeles on computer science meeting
> 

In Christ,
Steven Watanabe