Re: [boost] [thread] Can't use boost/thread/mutex.hpp without boost_system

Subject: Re: [boost] [thread] Can't use boost/thread/mutex.hpp without boost_system
From: Vicente Botet (vicente.botet_at_[hidden])
Date: 2012-01-18 09:01:24

Artyom Beilis wrote
> 
> Hello,
> 
> The Boost.Thread version in trunk does not allow to use simple mutex as it
> was
> possible before:
> 
> 
> Â  #include <boost/thread/mutex.hpp>
> Â  #include <iostream>
> 
> Â  int main()
> Â  {
> Â  Â Â Â Â Â Â Â  boost::mutex l;
> Â  Â Â Â Â Â Â Â  {
> Â  Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  boost::unique_lock<boost::mutex> g(l);
> Â  Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  std::cout << "Test" << std::endl;
> Â  Â Â Â Â Â Â Â  }
> Â  } 
> 
> 
> Was working fine without linking with 1.48 and 1.46 but now
> it fails with current trunk version requiring dependency on Boost.System.
> 

Hi,

I was not aware that Boost.Thread was working as a header only library. I
have added some support to report errors following the C++11 standard, using
Boost.System. You need to link with Boost.System library. Is this an issue? 

> It breaks some code and breaks at least Boost.Locale.
> 

Is there some break other than the need to link with?

> Is this change intentional or a bug? If it is intentional I'd
> like to know to fix Boost.Locale if not then is it possible to fix it.
> 

It was intentional. I hope that you just need to link in addition with
boost_system.

Aside, I proposed Beman a patch to make Boost.System header-only when I
tried to make Boost.Chrono header-only but he didn't accepted it :(.

I'm trying to make some changes that are code compatible, but I was unable
to avoid the link issue.

Best,
Vicente

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