Re: [boost] [system] Header-only Boost.System by default ?

Subject: Re: [boost] [system] Header-only Boost.System by default ?
From: Marc Glisse (marc.glisse_at_[hidden])
Date: 2017-10-15 22:21:38

On Mon, 16 Oct 2017, Peter Dimov via Boost wrote:

> Marc Glisse wrote:
>
>> It would be great to avoid talking about the 2 macros at the same time, 
>> since they do not do the same thing. BOOST_SYSTEM_NO_DEPRECATED mostly 
>> removes some old synonyms, which otherwise cause
>> 
>> #include <boost/system/error_code.hpp>
>> int main(){}
>> 
>> to require linking with boost_system. This happens to a lot of users, where 
>> the file is included indirectly through other boost packages.
>
> Perhaps someone could prepare a pull request that turns `#ifndef 
> BOOST_SYSTEM_NO_DEPRECATED` into `#ifdef BOOST_SYSTEM_ENABLE_DEPRECATED`?

Well, Niall seemed to imply that this would be wrong, so it needs to be 
clarified first. Otherwise:

#ifndef BOOST_SYSTEM_ENABLE_DEPRECATED
#define BOOST_SYSTEM_NO_DEPRECATED
#endif

+ the doc change. There is a file in chrono that uses 
BOOST_SYSTEM_NO_DEPRECATED, which restricts the ways to do it if we want 
to avoid a second pull request in a different package.

-- 
Marc Glisse