Re: [boost] proposal - modularize Boost build system

Subject: Re: [boost] proposal - modularize Boost build system
From: Peter Dimov (lists_at_[hidden])
Date: 2017-06-19 12:52:45

Stefan Seefeld wrote:

> I'm asking whether a specific use-case that is obviously important to me 
> (and to many others I gather, even though few people express it the way I 
> do) could be supported.

What I use is this:

https://github.com/boostorg/system/blob/develop/.travis.yml#L288

This is not quite what you want, because it doesn't use the system-installed 
Boost, it git clones one. But it only clones the minimum subset necessary 
for the tests (of, in this case, Boost.System) to run.

Now admittedly in Boost.System's case this is just

$ python tools/boostdep/depinst/depinst.py system
Installing module core
Installing module predef
Installing module winapi
Installing module assert
Installing module config

taking 4 seconds, and in Boost.Python's case you'll need much more than 
that. But it's (a) still not the whole Boost and (b) is only dependent on 
what you #include, not on Boost's overall size.

Appendix A, Boost.Python test dependencies:

C:\Projects\boost-git\boost>dist\bin\boostdep --test python
Test dependencies for python:

assert
bind
config
conversion
core
detail
foreach
function
graph
integer
iterator
lexical_cast
mpl
numeric~conversion
preprocessor
property_map
smart_ptr
static_assert
tuple
type_traits
utility

throw_exception (from conversion)
typeof (from conversion)
range (from foreach)
move (from function)
type_index (from function)
algorithm (from graph)
any (from graph)
array (from graph)
bimap (from graph)
concept_check (from graph)
disjoint_sets (from graph)
functional (from graph)
graph_parallel (from graph)
math (from graph)
multi_index (from graph)
optional (from graph)
parameter (from graph)
property_tree (from graph)
random (from graph)
regex (from graph)
serialization (from graph)
spirit (from graph)
test (from graph)
tti (from graph)
unordered (from graph)
xpressive (from graph)
function_types (from iterator)
fusion (from iterator)
container (from lexical_cast)
predef (from mpl)
mpi (from property_map)
exception (from algorithm)
lambda (from bimap)
(unknown) (from container)
intrusive (from container)
dynamic_bitset (from graph_parallel)
filesystem (from graph_parallel)
variant (from graph_parallel)
atomic (from math)
format (from property_tree)
system (from random)
io (from serialization)
endian (from spirit)
iostreams (from spirit)
locale (from spirit)
phoenix (from spirit)
pool (from spirit)
proto (from spirit)
thread (from spirit)
timer (from test)
winapi (from system)
chrono (from thread)
date_time (from thread)
ratio (from chrono)
tokenizer (from date_time)
rational (from ratio)