First Ubuntu Artful Aardvark test rebuilds (and upcoming GCC 7 transition)

[Matthias Klose]

The first test rebuild of Artful Aardvark was started on July 6 for all
architectures, all components (main component and seeded packages finished,
unseeded packages still building).

For arm64 and armhf the gcc-6 packages are based on the Linaro 6-2017.06
snapshot.

Results (please also look at the superseded builds) can be found at

  http://qa.ubuntuwire.org/ftbfs/rebuilds/test-rebuild-20170706-artful.html

The test rebuild uses binutils, gcc-6, gcc-7 and linux packages currently still
in the proposed release pocket, which can also be found separately in the PPA

  https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/ppa

Additional build failures for packages in artful-proposed (not yet in artful)
can be found at http://qa.ubuntuwire.com/ftbfs/

Please help fixing the build failures.


Another test rebuild using GCC 7 as the default can be found at
http://qa.ubuntuwire.org/ftbfs/rebuilds/test-rebuild-20170706-gcc7-artful.html

For arm64 and armhf the gcc-7 packages are based on the Linaro 7-2017.06
snapshot.

The test rebuild uses gcc-defaults, binutils, gcc-6, gcc-7 and linux packages
currently still in the proposed release pocket, which can also be found
separately in the PPA

  https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test

We are planning the transition to GCC 7 for late July / August.  Please help
fixing the build issues using the update GCC.

Information about transitioning to GCC 7 can be found at:

 * https://gcc.gnu.org/gcc-7/porting_to.html
 * https://wiki.debian.org/GCC7
 * Please forward patches for GCC 7 build failures to the bug reports
   already filed in Debian (see the above wiki page for the bug list).

  Matthias