Re: [boost] [release] Boost 1.62.0. Beta 2

Subject: Re: [boost] [release] Boost 1.62.0. Beta 2
From: David Mugnai (dvd+boost_at_[hidden])
Date: 2016-09-16 19:14:10

Quoting David Mugnai (2016-09-17 00:44:28)
> Quoting David Mugnai (2016-09-15 17:09:11)
> > Quoting Rene Rivera (2016-09-14 16:01:33)
> > > The packages for 1.62.0 beta 2 are now available:
> > [snip]
> > >
> > > As always, the release managers would appreciate it if you download
> > > the archive of your choice and give building and using it a try. Please
> > > report
> > > both success and failure, and anything else that is noteworthy.
> > 
> > I'm working on a conan[1] recipe to build boost, it works with the beta 1
> > but is broken with the new release.
> > 
> > The problem raises when `b2` is called with the following cmdline:
> > 
> > ./b2 toolset=gcc link=static variant=release address-model=64 define=_GLIBCXX_USE_CXX11_ABI=1\
> >   -j4 --abbreviate-paths --without-python -s BZIP2_BINARY=bz2\
> >   -s BZIP2_INCLUDE=/home/dvd/.conan/data/bzip2/1.0.6/lasote/stable/package/edadca1e87b5221b49136db2890144d01c45377a/include\
> >   -s BZIP2_LIBPATH=/home/dvd/.conan/data/bzip2/1.0.6/lasote/stable/package/edadca1e87b5221b49136db2890144d01c45377a/lib
> 
> I've discovered that the 7z version of the archive compiles
> fine; so the problem seems to be related to the .tar.gz.
> 
> I've tried to diff the two versions of
> `tools/build/src/kernel/modules.jam` (the one from the .tar.gz and the
> one from the .7z) but they seems to differ only for the newlines.
> 
> Casually I found a "workaround"; running `./b2 clear` between
> `./bootstrap.sh` and `./b2` fixes the problem.

Hemm, it is not a proper workaround :)

Obviously `./b2 clear` does nothing because `clear` is not a valid
target.

It looks to work because with `./b2 foobar` bzip2 is not found and thus
the error is not triggered, while the second invocation of `./b2` finds
the settings for bzip2 in the cache.