Re: [Boost-users] boost/math/special_functions/legendre.hpp causingcompile errors in other headers

Subject: Re: [Boost-users] boost/math/special_functions/legendre.hpp causingcompile errors in other headers
From: John Maddock (john_at_[hidden])
Date: 2009-03-10 13:14:34

>I recently started using the Boost Math libraries because I need legendre
>polynomials.  However I cam across a problem I was hoping someone on this
>list could help me with.
>My personal code compiles fine with no problems.  When I add the line
>
>#include "boost/math/special_functions/legendre.hpp"
>
>then I get compiler errors attributed to one of my header files.
>Specifically I get:
>
>my_header.hh:109 error: ISO C++ forbids declaration of ‘tuple’ with no type
>
>As I mentioned before, I don't believe the problem is in my header file
>because it compiles just fine without the legendre.hpp file.
>
>Has anyone seen this problem before?  Do you know how to fix it?  I am
>running gcc 4.2.1 on Mac OS X 10.5.6.

No I haven't seen that before, I would guess that there is a name clash 
somewhere, since legrendre.hpp pulls in Boost.TR1.Tuples.

So... what's at line 109 in your header, and do you do a using namespace 
std::tr1; or something similar somewhere?

HTH, John.