id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10858	The properties are not propagated into siblings and conflict.	Kohei Takahashi <flast@…>	Vladimir Prus	"Since github.com/boostorg/context/commit/c5292fea24c003c3279e0f0770a93cae829e75e3 (Hey Trac! I'm not a spam!) this commit, Boost.Context depends on Boost.!System/Thread, it will be shipped as 1.58.0 release.

Then, new dependency will generate following graph(partially), is expected.
{{{
  Chrono -> System
      Thread -/
Context -^---/
}}}

Although, bbv2 generates two separated dependency graph like this.
{{{
  Chrono -> System
     Thread -/

      Thread(AA) -> System(AA)
Context(AA) -^------/

AA: The target depends on address-model/architecture feature.
}}}

It means that two different (or might not different) binaries will be generated: '''bin.v2/.../libboost_system.so.1.58.0''' and '''bin.v2/.../address-model-xx/architecture-yy/libboost_system.so.1.58.0'''.

This issue will be appeared when installing or staging boost: b2 show following error message.

{{{
error: Name clash for '<pstage/lib>libboost_system.so.1.58.0'
error: 
error: Tried to build the target twice, with property sets having 
error: these incompatible properties:
error: 
error:     -  <warnings>all
error:     -  <address-model>64 <architecture>x86 <warnings>on
error: 
error: Please make sure to have consistent requirements for these 
error: properties everywhere in your project, especially for install
error: targets.
}}}


Tentatively workaround is specifying those features explicitly (i.e. '''b2 address-modell=64 architecture=x86''' in the above case).
"	Bugs	closed	Boost 1.58.0	build	Boost Release Branch	Showstopper	fixed