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From: David Abrahams (dave_at_[hidden])
Date: 2004-12-16 16:58:29

Jody Hagins wrote:
> On Thu, 16 Dec 2004 10:42:13 -0500
> David Abrahams <dave_at_[hidden]> wrote:
>> The only real problem now is that there are a plethora of different
>> build / configuration systems out there. Should BBv2 try to cater to
>> each one? We could generate pkg-config files in addition to Jamfiles,
>> oh and we could generate Makefiles and autoconf files and Visual
>> Studio Projects and Metrowerks projects and...
>> I think the answer is that we (the BB maintainers) should only feel
>> responsible for generating the Jamfiles, and we should invite
>> interested parties to submit Boost.Build support for the other things.
> Right. However, the main problem is not which build tool I use, but how
> I can integrate the boost libraries into my build process.
> Specifically, I must build my code with the same flags and options that
> boost is built. If my project does not use jamfiles, this is very
> difficult, because I have no way of knowing what options to use. In a
> large project, I may be using several different libraries, each built
> with a different build system. To me, that is ok, as long as there is
> some way for me to grab those options from some other program or script
> so that I can incorporate them into my other builds.
> I do not think anyone is suggesting that Boost support all build
> environments. Instead, I think people are wanting a way to extract the
> build information in an easy manner. For example, a big help would be
> to go to the root of boost, and call bjam just like I would to build my
> libraries, except pass in another option that is interpreted as "Pretend
> to build each library, but instead of actually doing the build steps,
> spit out all the build options for each library."

bjam -n -a

-n == don't actually build anything, but print the commands used.
-a == act like everything is out of date and needs to be rebuilt

Dave Abrahams
Boost Consulting

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