Re: [Qemu-devel] [PATCH] tests: Fix Python 3 detection on older GNU make versions

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 6/11/18 15:13, Eduardo Habkost wrote:
> The $(SHELLSTATUS) variable requires GNU make >= 4.2, but Travis
> seems to provide an older version.  Change the existing rules to
> use command output instead of exit code, to make it compatible
> with older GNU make versions.

You were quicker, I just found out :)

> 
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
> I think that's the cause of the Travis failures.  I have
> submitted a test job right now, at:
>    https://travis-ci.org/ehabkost/qemu-hacks/jobs/451387962
> Let's see if it fixes the issue.

You can run it locally:

$ make docker-image-travis
...
$ docker run --rm -it -v $(pwd):$(pwd) -w $(pwd) \
     -u 0 --entrypoint=/bin/bash qemu:travis
root@ede09efe22fd:qemu# cd build/docker_travis/
root@ede09efe22fd:qemu/build/docker_travis# make AVOCADO_SHOW=app 
check-acceptance
   VENV    qemu/build/docker_travis/tests/venv
The virtual environment was not created successfully because ensurepip 
is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

     apt-get install python3-venv

You may need to use sudo with that command.  After installing the 
python3-venv
package, recreate your virtual environment.

root@ede09efe22fd:qemu/build/docker_travis# apt install python3-pip 
python3.4-venv
root@ede09efe22fd:qemu/build/docker_travis# make AVOCADO_SHOW=app 
check-acceptance
   VENV    qemu/build/docker_travis/tests/venv
   PIP     qemu/tests/requirements.txt
   AVOCADO tests/acceptance
JOB ID     : 5e5529e79456c388e80323acdc71f3887341a498
JOB LOG    : 
qemu/build/docker_travis/tests/results/job-2018-11-06T14.26-5e5529e/job.log
  (1/6) 
qemu/tests/acceptance/boot_linux_console.py:BootLinuxConsole.test: 
CANCEL: No QEMU binary defined or found in the source tree (0.01 s)
  (2/6) 
qemu/tests/acceptance/version.py:Version.test_qmp_human_info_version: 
CANCEL: No QEMU binary defined or found in the source tree (0.01 s)
  (3/6) qemu/tests/acceptance/vnc.py:Vnc.test_no_vnc: CANCEL: No QEMU 
binary defined or found in the source tree (0.00 s)
  (4/6) qemu/tests/acceptance/vnc.py:Vnc.test_no_vnc_change_password: 
CANCEL: No QEMU binary defined or found in the source tree (0.00 s)
  (5/6) 
qemu/tests/acceptance/vnc.py:Vnc.test_vnc_change_password_requires_a_password: 
CANCEL: No QEMU binary defined or found in the source tree (0.00 s)
  (6/6) qemu/tests/acceptance/vnc.py:Vnc.test_vnc_change_password: 
CANCEL: No QEMU binary defined or found in the source tree (0.00 s)
RESULTS    : PASS 0 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | 
CANCEL 6
JOB TIME   : 0.45 s

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>   tests/Makefile.include | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index d2e577eabb..074eece558 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -913,8 +913,8 @@ TESTS_RESULTS_DIR=$(BUILD_DIR)/tests/results
>   # information please refer to "avocado --help".
>   AVOCADO_SHOW=none
>   
> -$(shell $(PYTHON) -c 'import sys; assert sys.version_info >= (3,0)' >/dev/null 2>&1)
> -ifeq ($(.SHELLSTATUS),0)
> +PYTHON3 = $(shell $(PYTHON) -c 'import sys; print(1 if sys.version_info >= (3, 0) else 0)')
> +ifeq ($(PYTHON3), 1)
>   $(TESTS_VENV_DIR): $(TESTS_VENV_REQ)
>   	$(call quiet-command, \
>               $(PYTHON) -m venv --system-site-packages $@, \
>