Re: [Boost-build] [bbv2] Build-dir for used projects

From: Johan Nilsson (r.johan.nilsson_at_[hidden])
Date: 2006-08-08 03:15:20

Sorry for the late reply, I've been on holidays.

Vladimir Prus wrote:
> On Thursday 29 June 2006 12:08, Johan Nilsson wrote:
>
>> I actually just now tried this before 'use-project' boost :
>>
>> local argv = [ modules.peek : ARGV ] ;
>> argv += --builddir=$(mybuilddir) ; # need to check if it already
>> exists modules.poke : ARGV : $(argv) ;
>>
>> But the build-dir didn't change. Checking the root Jamfile.v2 showed
>> that it was hard-coded to bin.v2 - which I guess was what you were
>> saying all along. Just to make sure it worked as expected, I tried
>> the same thing with '--without-python', and that worked fine.
>>
>> Looks like a bug to me - the command-line option '--builddir'
>> doesn't seem to be respected. At least not in my week-old copy of
>> RC_1_34_0.
>
> Well, there's no such option ;-)

Well, that explains why it isn't respected ;-)

> Looking at
> http://boost.org/boost-build2/doc/html/bbv2/advanced/invocation.html
>
> I see option name "--build-dir", though.

Trying "bjam --v2 --help" from boost root at RC_1_34_0 gives (among other 
stuff):

---
    --builddir=DIR          Build in this location instead of building
                            within the distribution tree. Recommended!
---
Which is a legacy from v1 I guess - OTOH if v2 is going to replace v1 I 
believe the support should be there. I've personally always used that option 
with v1.
>
> I must admit using command line option like that, in the middle of
> Jamfile, might not work. If you have a suggestion on a clearer
> solution, I'd be interested to hear.
Not for the moment, but I'll get back in case I do.
However, to be able to easily use the boost libraries (or own libraries 
using BBv2 as the build system) as components from other projects, it should 
be possible to pass all properties/project defaults across Jamroot 
boundaries as well. IMHO, of course.
[As it's my first few days since vacation I'm sure there are implications 
that I haven't thought of]
Thanks / Johan