Re: [boost] Build breaking changes

Subject: Re: [boost] Build breaking changes
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2018-03-28 21:07:07

AMDG

On 03/28/2018 02:42 PM, Antony Polukhin via Boost wrote:
> 
> I've just noted that building Boost from master stopped working:
> 
> [00:16:51] b2.exe -j4 toolset=gcc --layout=system variant=release
> architecture=x86 link=static --with-program_options --with-filesystem
> --with-system --with-test --with-atomic --with-thread --with-timer
> --with-date_time --with-chrono --with-regex --with-random
> --with-context stage
> 

  The change was to build both 32-bit and 64-bit libraries
by default on windows.  Building multiple variants conflicts
with --layout=system.  You can work around this by
explicitly adding address-model=64.  Perhaps we need
to adjust the default variant(s) based on the value of
--layout.

> [00:16:52] Performing configuration checks
> [00:16:52]
> [00:16:52]     - default address-model    : 32-bit
> [00:16:53]     - default architecture     : x86
> [00:16:53]     - symlinks supported       : yes (cached)
> [00:16:54]     - C++11 mutex              : yes
> [00:16:55]     - has_icu builds           : no
> [00:16:55]     - BOOST_COMP_GNUC >= 4.3.0 : yes
> [00:16:55]     - C++11 mutex              : no
> [00:16:56]     - has_icu builds           : no
> [00:16:56]     - BOOST_COMP_GNUC >= 4.3.0 : no
> [00:16:56] error: Name clash for '<pstage\lib>libboost_atomic.a'
> [00:16:56] error:
> [00:16:56] error: Tried to build the target twice, with property sets having
> [00:16:56] error: these incompatible properties:
> [00:16:56] error:
> [00:16:56] error:     -  <address-model>64
> [00:16:56] error:     -  <address-model>32
> [00:16:56] error:
> [00:16:56] error: Please make sure to have consistent requirements for these
> [00:16:56] error: properties everywhere in your project, especially for install
> [00:16:56] error: targets.
> [00:16:56]
> [00:16:56] Command exited with code 1
> 
> 
> Previously this build command worked fine. Full log available at
> https://ci.appveyor.com/project/apolukhin/boost-cookbook/branch/second_edition/job/y9tsbgi430280u7y
> 
> 
> Is this an intended breaking change?
> 
In Christ,
Steven Watanabe