Re: [boost] [patch] using boost/version.hpp

From: Rene Rivera (grafik.list_at_[hidden])
Date: 2005-10-20 15:14:42

Christophe Prud'homme wrote:
> Dear Boosters,
> 
> I am trying to keep some backward compatibility (for some while) for the boost 
> libraries we use in our codes (ublas for example), and I find that the  
> addition below to boost/version.hpp helps a lot with readability in the code 
> instead of using 
> 
> //  BOOST_VERSION % 100 is the sub-minor version
> //  BOOST_VERSION / 100 % 1000 is the minor version
> //  BOOST_VERSION / 100000 is the major version

There's been some recent discussions related to version numbers from the 
proposal/summary I posted for normalizing version checking which is related:

http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?BoostConfig

It has a BOOST_VERSION_NUMBER macro like your BOOST_MAKE_VERSION macro. 
That type of macro can already be used with the BOOST_WORKAROUND 
utility. For example...

> In order to test the current version of boost:
> #if BOOST_IS_VERSION(1,33,0)
>   ... write the code according to the API >= 1.33.0
> #else
>   ... write the code according to the API <  1.33.0
> #endif

#if BOOST_WORKAROUND( BOOST_VERSION, >= BOOST_VERSION_NUMBER(1,33,0) )
  ...
#else
  ...
#endif

The discussions also mentioned changing BOOST_WORKAROUND to allow this:

#if BOOST_WORKAROUND( BOOST_VERSION,>=,1,33,0 )

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