[PATCH v1 0/5] run unit tests in the CI

[Edwin Török <edwin.torok@xxxxxxxxxx>]

Currently the unit tests aren't run in the CI during the build.
Introduce a 'make check' rule that can run them all (in parallel if `-j`
is specified).

To make reading the CI output easier make's `-O` flag is used (which
buffers output per target, making it obvious which command failed).

TBD: what is the actual minimum version of binutils required by the
existing tests, because Ubuntu 16.04 with binutil 2.26.1 failed.
That version of Ubuntu is EoL in a few days, so it is dropped from the CI build 
step.
The actual containers and the xilinx-arm64 jobs are kept for now
(although these should be updated to use bionic).

A followup patch series will rearrange the unit test make rules,
so it is useful to test that all the unit tests worked both prior and
following that change on all supported platforms in the CI.

For convenience this series is also available as a git repository:
https://gitlab.com/xen-project/people/edwintorok/xen/-/tree/private/edvint/run-ci?ref_type=heads

Edwin Török (5):
  README: update minimum make to 4.1
  CI: drop Ubuntu 16.04
  tools/test: introduce a 'make check' rule
  automation/scripts/build: run unit tests in the CI
  automation/scripts/build: group command output from parallel jobs

 Makefile                        |  4 ++++
 README                          |  2 +-
 automation/gitlab-ci/build.yaml | 10 ----------
 automation/scripts/build        | 10 ++++++----
 tools/Makefile                  |  4 ++++
 tools/Rules.mk                  |  2 +-
 tools/tests/Makefile            | 20 +++++++++++++++++++-
 7 files changed, 35 insertions(+), 17 deletions(-)

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2.47.3