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Yes, I've tried to compile w/ the right header version of math-toolkit.

Just to be sure and to confirm the problem:

Right now I'm using Boost 1.33.1. Do you confirm that math-toolkit can operate only w/ Boost 1.34? If yes, sorry for the noise.

Yes, only 1.34, but I'd expect different error messages if you tried to use with 1.33.1:

$ cl -GX -I../../ -I../../../../../1.33.1/boost_1_33_1 t.cpp Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.6030 for 80x86 Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.

t.cpp ../../boost\math\tools\roots.hpp(13) : fatal error C1083: Cannot open include file: 'boost/tr1/tuple.hpp': No such file or directory

[Marc Viala] Amazing... I've just double checked my boost headers directory and I confirm the use of 1.33.1. I didn't find any reference of TR1 headers.

...

By the way, do you plan to adapt your headers for Boost 1.33.1?

Nope, too much to do, too little time, it'll become part of Boost 1.35

or

1.36 so there's no point in supporting earlier versions.

[Marc Viala] OK. I'll look of your library when I'll do the boost upgrade. Thanks for your help & best regards Marc Viala