Re: [Boost-build] [PING] State of PCH/msvc

From: Bojan Resnik (resnikb_at_[hidden])
Date: 2006-04-26 05:52:06

> Any comments on below?
>
> > Hi!
> > Can somebody update me on the state of PCH/msvc? Are there any docs how to
> > use them? Any known issues?
> >
> > Basically, I'm trying to find out if this feature should be included in
> > release notes for M11, or left for M12 (to appear together with PCH/gcc)
> >
> > TIA,
> > Volodya

  The biggest issue that I have with PCHs is that the requirements of
the main target are not propagated to the PCH. For example:

    import cast ;
    pch mypch : [ cast _ pcheader : pch.hpp ] pch.cpp ;
    exe hello : mypch main.cpp
                     : <define>ABC
                    ;

   main.cpp will be compiled with ABC defined, while pch.cpp will not.
This gets more problematic if the exe uses other libraries which have
usage requirements, since these are not propagated either.

--
Bojan Resnik