Reece Dunn wrote:

Andy Little wrote:

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"David Abrahams" wrote

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"Andy Little"writes:

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Whenever I invoke bjam I get this first:

warning: Python location is not configured warning: the Boost.Python library won't be built Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it).

Thanks Bjam. You know what? I really don't care!

Got anything constructive to say about it?

Nope. Just more ranting I'm afraid...

The fact is that all my tests and examples seem to build fine without me having done anything about configuring Python or Regex, so these messages are completely bogus AFAICS. What purpose do they serve?

What you may not realise is that Boost.IOStreams will generate warnings about mizzing ZLib and BZip2 libraries. However, for these you need to say:

bjam --v2 --debug-configuration

It would make sense to do the same for the Python and RegEx libraries. That way, if you run into build/configuration problems, you will be warned about the missing libraries and if you don't care (like Andy :)), then you won't see anything. It will also make things cleaner.

+1 to that, or something similar. I've also been annoyed by that for some time now, as it shows up even if you use e.g. 'use-project boost : $(BOOST_ROOT)' from within your own projects. - For the Python library, would it be possible to only output that if the Python library should actually be built? Even if I invoke Boost.Build using e.g. "bjam --with-thread" the message appears. - For the libraries where the messages refer to optional parts: Try to implicitly build the optional parts if the supporting components can be found. Add optional command-line arguments that should be used if you know that you need those extensions, and fail the build if not. If the library should not be actually built - don't output anything. As an example, to _require_ ICU support when building regex: "bjam --with-regex --regex-with-icu" To not use ICU, even if it exists: "bjam --with-regex --regex-without-icu" Perhaps also add a global "--extensions-on" or "--extensions-off" option for stuff requiring optional libraries? Just my .02 EUR. // Johan