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: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2012-01-22 08:29:15

On 01/22/2012 12:00 PM, Vicente J. Botet Escriba wrote:
> Le 22/01/12 03:37, Beman Dawes a écrit :
>> On Sat, Jan 21, 2012 at 5:29 PM, Vicente J. Botet Escriba
>> <vicente.botet_at_[hidden]> wrote:
>>> ...
>>>
>>> Ihave found that a little patch to Boost.System could make it
>>> header-only.
>>> It seems that Beman has already tried it, but there are some errors.
>> I'd like to make Boost.System available for header-only use, but IIRC
>> the suggested changes broke some other libraries that use
>> Boost.System.
> Please, could you point me to which libraries are you referring to?
>> Also, I'd like to see a Boost guideline worked out for how to make
>> libraries header only without dumping vast numbers of names for
>> operating system headers into the global namespace.
>
> I recognize that it could be difficult for libraries as Boost.Thread or
> Boost.FileSystem, but I don't think Boost.System will be on this case as
> its dependency are really minor, isn't it?
> Could you explain more deeply the problem you want to avoid?

error_code.cpp includes windows.h and puts lots of symbol in the global 
namespace.
I'm not sure #include "local_free_on_destruction.hpp" works either in a 
scenario where the file is included.

So there are problems with the approach of including .cpp files as-is, 
and a better approach must be found.