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From: David Abrahams (dave_at_[hidden])
Date: 2005-06-23 08:24:31

Martin Wille <mw8329_at_[hidden]> writes:

> David Abrahams wrote:
>> Martin Wille writes:
> [...]
>>>include $(BOOST_ROOT)/tools/build/v1/gcc-stlport-tools.jam ;
>> The line above is the wrong way to go about things. Why aren't you
>> using
>> extends-toolset gcc-stlport ;
>> all other such toolsets do?
> Because the language used in Jamfiles was a mystery to me when I wrote
> that (mostly, it is still a mystery to me).

Well, "do what the other toolsets do unless it doesn't work" is a good

> You may get away with it in this
>> case, but it's a hack.
> It works fine for me, since I only run tests for one toolset at a time.

You seem to understand more than you claim about how BB works.

> We'll, hopefully, switch to BBv2 soon; I don't think I need to fix my
> toolset definitions now.

Your choice.

> One example for mysteries: I used 'extends-toolset' for the
> intel-based toolsets. However, while I was able to use 'local' for a
> couple of variables, I wasn't able to use it for PYTHON_ROOT.
> Hence, the intel-7.1-linux toolset reads:
> {
> local INTEL_LINUX_VERSION = "70" ;
> local INTEL_LINUX_ROOT = "/usr/local/icc-7.1/compiler70" ;
> PYTHON_ROOT = "/usr/local/Python-2.2.3-intel" ;
> extends-toolset intel-linux ;
> }

I think I can explain the problem you were seeing. Toolset files are
read once for each toolset and target that is being built, but
python.jam is not a toolset file, so it is read only once and its
configuration variables only get set up once.

Until just now, I had forgotten that sometimes you really do need a
python that's built with the same compiler you're testing for -- I
guess that's something we'll need to build into BBv2.

Dave Abrahams
Boost Consulting

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