Re: [Qemu-devel] [PATCH] tests: dump config.log when configure fails in docker job

[Eric Blake <eblake@redhat.com>]

On 02/15/2018 11:16 AM, Daniel P. Berrangé wrote:
> When configure fails inside a docker job it is not easy to get access to
> the config.log file. It is nicer for developers if we just splatter the
> contents of config.log to stdout upon failure
> 
> Suggested-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> ---
>   tests/docker/common.rc | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/docker/common.rc b/tests/docker/common.rc
> index 7951555e3f..ecbea13443 100755
> --- a/tests/docker/common.rc
> +++ b/tests/docker/common.rc
> @@ -30,7 +30,8 @@ build_qemu()
>                    $@"
>       echo "Configure options:"
>       echo $config_opts
> -    $QEMU_SRC/configure $config_opts && make $MAKEFLAGS

The old code dies if either configure or make has non-zero exit status.

> +    $QEMU_SRC/configure $config_opts || cat config.log
> +    make $MAKEFLAGS

But this turns a failure of configure into a successful exit status 
(presuming that cat doesn't also fail), which means we try the make no 
matter whether configure succeeded.

Better might be:

$QEMU_SRC/configure $config_opts || { cat config.log; exit 1; }


-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org