Re: [Boost-users] [fusion/tr1] Include path problem?

From: Kimon Hoffmann (Kimon.Hoffmann_at_[hidden])
Date: 2007-07-22 07:07:20

Hi all,

>> Off hand I can't spot the problem: only the indirect cause - that 
>> tuple_basic.hpp never gets included.  However, there is a simple temporary 
>> fix: put #include <utility> as your first include, and everything *seems* to 
>> be OK.  It is a bug though, I just can't see what it is in fusion that's 
>> causing the failure at present.
> 
> I'm confused. HEAD does not have the fusion in the spirit directory
> since it's been accepted into boost. And, proto does not have the
> op_base.hpp file anymore. What CVS branch are we talking about?

now I finally had the time to test this issue with 1.34.1 RC3 and CVS
HEAD. As expected the problem persists in 1.34.1 RC3, no modification
of the example I provided before is required.

With CVS HEAD there still exists a problem, but the error messages are
different. Here is a minimal example for CVS HEAD:

-------- START: Test.cpp --------

/*
 * Originally included from
 *  - boost/xpressive/proto/proto.hpp
 *  -- boost/xpressive/proto/operators.hpp
 *  --- boost/xpressive/proto/make_expr.hpp
 */
#include <boost/fusion/sequence/intrinsic/at.hpp>

-------- END: Test.cpp --------

The circumstances under which the problem occurs are the same as with
Boost 1.34.0. The example fails to compile when the Boost.TR1 include
directory is present in the include path and precedes the Standard
Library include directory/directories.

Regards,
  Kimon