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From: Phillip Seaver (phil_at_[hidden])
Date: 2006-03-30 12:08:04

John Maddock wrote:
>> You should using something like this:
>> projec yours :
>> requirements <use>path_to_boost//headers ;
>> run myfile ;
>> Or you can have:
>> run myfile path_to_boost//headers ;
>> This is not fully covered in docs, I'll try to update
>> 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.
> John.
The advantage is that you get the other usage requirements. In the
version I have, boost//headers has "<include>.
<define>BOOST_ALL_NO_LIB=1" in its usage requirements. So, that will
add BOOST_ALL_NO_LIB=1 to the list of defines for your compiles in
addition to giving you the include directory. That's one of the major
advantages of boost-build for me: the project sets usage requirements
so that all the project users don't have to.

As David said, you should use "/boost//headers". The other user may
have to do "use-project /boost : path_to_boost ;", depending on their setup.

On my system, I use the 1.33.1 distribution of boost, but I use the
latest boost-build out of CVS in a separate directory. So, knowing
where boost-build is wouldn't help you find boost at all.


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