[Openembedded-architecture] Yocto support for Centos-7 (RHEL-7): drop in early 2020?

[Randy MacLeod]

In the YP technical meeting today, Richard suggested that we stop
support for CentOS-7. Is there any objection to doing so
before 3.1-M2?

CentOS-7 is just too old and there is significant work to support it.
Richard said that many if not most of the package upgrades that he
deals with fail for CentOS-7 and he has to either fix them himself
or get the person who submitted the work to do so. Newer distributions
are not nearly so problematic.

While the CentOS-7 distro is still a supported by it's provider,
the toolchain is very old:
  - gcc-4.8
  - glibc-2.17
  - binutils-2.27

One could add a newer toolchain to the buildtools tarball to address
some of the CentOS-7 support problems. So far, we have only use
the host's toolchain and it seems best to continue to do so.

Release and support dates for CentOS-6,7,8 are here:
   https://wiki.centos.org/About/Product
Note that 'Full Updates' or new hardware support for
CentOS-7 stops in Q3 2020.

-- 
# Randy MacLeod
# Wind River Linux