Re: [PATCH 5/5] hvmloader: add knob for fixed VGABIOS date string

[Ian Campbell <ian.campbell@citrix.com>]

On Fri, 2015-03-20 at 18:24 +0100, Olaf Hering wrote:
> To allow reproducible builds of hvmloader introduce a make variable
> VGABIOS_REL_DATE="dd Mon yyyy" to provide a fixed date string. Without
> this change the hvmloader binary changes with every rebuild.
> 
> Signed-off-by: Olaf Hering <olaf@aepfle.de>
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Cc: Ian Campbell <ian.campbell@citrix.com>
> Cc: Wei Liu <wei.liu2@citrix.com>
> ---
>  INSTALL                         | 1 +
>  tools/firmware/vgabios/Makefile | 4 ++--
>  2 files changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/INSTALL b/INSTALL
> index 198cb9d..1b67c36 100644
> --- a/INSTALL
> +++ b/INSTALL
> @@ -215,6 +215,7 @@ can be used to provide fixed timestamps in the expected format.
>  XEN_BUILD_DATE=any
>  XEN_BUILD_TIME=hh:mm:ss
>  SMBIOS_REL_DATE=mm/dd/yyyy
> +VGABIOS_REL_DATE="dd Mon yyyy"

This is getting to be a rather long list of overrides.

Is it expected that they should all be settable independently? Or would
one global setting be sufficient?

If so then a single variable which can be set to something accepted by
date -d which could be formatted in each location would seem preferable.

Ian.