gcc-7 backport for stretch

[Sage Weil <sweil@redhat.com>]

Hi,

We'd like to build recent Ceph releases for stretch but we've updated our 
toolchain requirements to gcc 7.  This hasn't been a problem for 
RHEL/CentOS or Ubuntu since they provide updated gcc packages for their 
stable releases (7.x and 16.04 respectively) but we didn't anticipate that 
there wouldn't be a gcc-7 backport for stretch.  (I checked 
https://packages.debian.org/stretch-backports/devel/ and didn't see gcc 
listed.)

Is this something that is planned, or likely/possible?

Thanks!
sage