Re: [Boost-build] How to reference Boost header include path fromoutside the Boost tree?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-03-30 23:45:21

On Thursday 30 March 2006 20:34, John Maddock wrote:

> > with information about *using* header-only libraries, as opposed to
> > declaring them.
>
> What advantage does that have over just <include>path-to-boost ?
>
> In any case it completely misses the point: I know where Boost is on my
> machine, I don't know where it is on someone elses machine (who may be
> running my examples).  bjam on the other hand *does* know where boost is,
> because it's located the build system.  It's that information I want to
> pull out.

So, you want Boost.Build to get Boost root directory based on the path where 
Boost.Build itself is found.

That can be made to work, but:

1. It will break if your users happen to use system-wide Boost.Build. FWIW, 
there's already Boost.Build package for Debian, and users might install it 
from source themselfs too.

2. This will work only for Boost, but not for any third-party libraries.

The general solution seems to either set some environment variable what will 
be read by Jamroot, or hardcode paths in Jamroot and modify Jamroot when you 
move the source to a different machine.

- Volodya

-- 
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build V2: http://boost.org/boost-build2