Re: [boost] [1.37] Trivial but Boost wide patch?

Subject: Re: [boost] [1.37] Trivial but Boost wide patch?
From: Eric Niebler (eric_at_[hidden])
Date: 2008-10-10 13:24:48

John Maddock wrote:
> There's a problem in 1.37 as it stands in that:
> 
> * If Boost.TR1 is in the include path, and,
> * A Boost header is included that includes <cmath>.
> 
> Then the TR1 version of <cmath> gets included.  This is relatively 
> harmless on *nix platforms - except for somewhat longer compile times - 
> but for windows compilers that support auto-linking then the headers 
> want to link to the math TR1 libraries even if the user is actually 
> using a header only library like spirit for example.  This is the 
> subject of bug report: http://svn.boost.org/trac/boost/ticket/2392.

Ouch.

> There is a trivial fix, which is to replace #includes of <cmath> with 
> <boost/config/no_tr1/cmath.hpp>: I've just applied this to Trunk (so you 
> know who to blame if this causes any issues!), but should this be 
> applied to the release branch as well?  Changeset here: 
> http://svn.boost.org/trac/boost/changeset/49254/trunk

I'd say wait for the trunk tests to cycle and if everything looks good, 
merge this fix to release.

Thanks.

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com