Re: [Boost-build] Request for "--config-file=FILE" to override user-config.jam/site-config.jam

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-12-18 08:33:21

On Wednesday 13 December 2006 01:22, Doug Gregor wrote:
> I have been working on updating the Unix-like configure script to  
> work with BBv2. This has become rather more important recently with  
> the new Getting Started guide recommending the use of "configure".
> 
> With BBv1, the configure script just built up a big command line to  
> pass to bjam with all of the configuration parameters.
> 
> With BBv2, the configure script needs to generate either a user- 
> config.jam or a site-config.jam. The problem is, we don't want to  
> overwrite the user's existing configuration, the site configuration,  
> or the sample configurations that are a part of bjam.
> 
> One hack I can think of would be to create a test-config.jam, but  
> that's just a hack. I think the right way to handle this would be for  
> BBv2 to support a new command-line option, --config-file=FILE, that  
> allows the user to provide the name of an alternate configuration  
> file.  Unfortunately, I've been staring at build-system.jam, which  
> looks like the place to do it, and I don't understand how we can make  
> this happen?
> 
> Do we want this feature?
> Could someone give me a hint as to how to do this, or---better  
> yet---"make it so"?

Doug,
on HEAD and RC_1_34_0 as of few minutes ago, you should be able to use:

        --user-config=/tmp/user-config.jam

This option overrides just user-config.jam, I'm not sure if overriding site-config.jam is
needed or not, but it's anyway empty in default Boost.Build install.

HTH,
Volodya