Re: [Boost-build] How to enhance install to register stage targets but not run them?

From: Eric Woodruff (eric.woodruff_at_[hidden])
Date: 2008-08-19 12:41:10

Can someone please comment on my question below?

Eric Woodruff wrote:
> Hi,
> 
> I'm working on a set of Jam rules to build an RPM. I'm using stage.jam 
> to install files into a buildroot directory, and a scanner to analyze 
> the dependencies of the RPM spec file. The goal of the build system is 
> to only build dependencies of an RPM when one is being built. At this 
> point everything seems to be working fine except for the behavior of the 
> install rule.
> 
> When install is run, it builds all of its sources and runs the virtual 
> targets that install the sources into <location>. The behavior I need is 
> that files not listed in the RPM spec file should not be built or 
> staged. So I'm looking for a way to extend install () or modify it with 
> a build requirement such that install () doesn't actually construct 
> anything, but instead only registers the virtual targets for each 
> element that has the potential to be staged. This way the stage targets 
> can still be found as dependencies of the RPM spec file, and are only 
> run in that case rather than unconditionally.
> 
> Does anyone have any advice on how this might be enhanced? I've been 
> looking at the install-target-class, but the solution hasn't made itself 
> apparent to me yet.
> 
> Thanks,
> 
> Eric
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