[U-Boot] [PATCH][RFC] Update U-Boot's build timestamp on every compile

[Peter Tyser <ptyser@xes-inc.com>]

On Fri, 2008-10-17 at 17:51 -0500, Peter Tyser wrote:
> Use the GNU 'date' command to auto-generate a new U-Boot
> timestamp on every compile.
> 
> Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
> ---
> I noticed that the build time of U-Boot was not updated on every
> compile which occassionally threw me for a loop as to whether
> a new U-Boot binary was programmed, etc.  This patch updates
> a U_BOOT_DATE define on every compile which can then be used
> in place of the multiple "__DATE__ - __TIME__" preprocessor
> macros that are currently used.
> 
> This also ensures the timestamp will be the same for a board
> if it uses __TIME__ in multiple files.
> 
> Let me know if this would be accepted into mainline and I'll
> generate a formal patch updating all __DATE__/__TIME__
> references.

Instead of U_BOOT_DATE, we could use U_BOOT_DATE (month, day, year) and
U_BOOT_TIME (24 hour time) to provide more granularity if others want
that level of control.

Peter