Re: [boost] bpm added to tools/bpm on develop

Subject: Re: [boost] bpm added to tools/bpm on develop
From: Peter Dimov (lists_at_[hidden])
Date: 2015-01-09 11:24:41

Beman Dawes wrote:
> "bpm: installing module 'math'". Ouch! math is big. I guess it is a 
> dependency of chrono. That isn't a bpm problem of course, so I'll post a 
> separate message about that.

'math' is one of our most obvious problematic cases, where modules that only 
need fpclassify.hpp and sign.hpp for float and double get the whole 
math(35), as in lexical_cast. See

http://www.pdimov.com/tmp/report-develop-3b5a9f4/module-weights.html

I've been thinking of proposing a separate Boost.Float library, for 
consistency with Boost.Integer, that would contain those and other useful 
floating point utilities, but have no time right now to flesh that out.

Other such cases are functional(24) for just hash (as were the case in, 
f.ex. array) and serialization(59) for just nvp.hpp and split_free.hpp (as 
in date_time).

And of course the perennial type_traits(10).

> "bpm: installing module 'numeric~conversion'" Note the '~'. Would it be a 
> better reflection of conversion being in a sub-directory of numeric if it 
> were a '/'?

boostdep deliberately replaces / with ~ in module names to make it easier 
for various tools (such as itself) that want to, f.ex. construct a filename 
or an URL from the module name, as they would otherwise need to watch for / 
and create directories. I can in principle replace it back to / in bpm for 
display purposes.

> That's all for now. For alpha level code, the experience so far has been 
> remarkably smooth!

Thanks.