Re: [boost] [cmake] Pull request announcement

Subject: Re: [boost] [cmake] Pull request announcement
From: Peter Dimov (lists_at_[hidden])
Date: 2018-09-27 03:15:10

Stefan Seefeld wrote:

> Indeed: While the above is a great starting point to support what I want, 
> I don't want to loose the ability for BPL to be built (and tested) as part 
> of the rest of Boost. I would thus prefer something that gives me the 
> ability to choose the build strategy e.g. using some command-line option, 
> including flag to be passed to the build (e.g., `b2 ... standalone=on`), 
> rather than having to modify the (build) code.

Scanning for Jamroot to identify the project root is fundamental to Jam (the 
Perforce one). We could perhaps add something like

    b2 --jamroot=.

that would act as if there were an empty Jamroot at . (or equivalently if 
the Jamfile at . were named Jamroot.)

Apart from that, since the existing installations of Boost aren't modular 
and are installed in the system-global directory /usr, there's not even need 
to enumerate the dependencies accurately or to add an include path. You 
could if you wanted to, I suppose. Python, specifically, only uses 
header-only libraries, so you don't even need to bother with library 
targets.