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

Subject: [boost] [1.37] Trivial but Boost wide patch?
From: John Maddock (john_at_[hidden])
Date: 2008-10-10 12:18:21

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.

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

Regards, John.