Re: [Boost-build] [pch] gcc woes

From: Vladimir Prus (ghost_at_[hidden])
Date: 2007-10-05 02:42:17

On Friday 05 October 2007 10:25:03 Johan Nilsson wrote:
> Hi,
> 
> after attempting to use precompiled headers toghether with gcc 4.1.2, I 
> figured I might as well post my "findings" here.
> 
> Pre-4.2.0 gcc can't handle pch and anonymous namespaces in headers, ref: 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29085
> 
> This makes it virtually impossible to use pch toghether with e.g. 
> Boost.Lambda, Boost.Parameter to build programs with multiple translation 
> units.
> 
> Perhaps a note of this could be added to the BBv2 pch docs?

Possibly, thanks for letting know.

> 
> Also - is it possible to disable pch using conditional requirements, making 
> the pch rule effectively returning a "null" target?

The <pch>off feature will have that effect.

- Volodya