[Buildroot] [PATCH 1/1] Makefile: Take default SOURCE_DATE_EPOCH from repo containing Makefile

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello,

On Tue, 10 Apr 2018 11:28:12 +0100, James Byrne wrote:
> For reproducible builds, SOURCE_DATE_EPOCH will be set to the git commit
> date if it is not defined in the environment, but this was done by
> explicitly using $(TOPDIR)/.git as the git repository, which would not
> give the expected result if Buildroot had been put into a subdirectory
> of another repository.
> 
> This commit removes that restriction, meaning that the default date will
> now be the date of the git commit that contains Makefile, regardless of
> what level above Makefile the repository is at. This works because the
> current directory when the 'git log' command is executed will always be
> the directory containing Makefile (it must be, since TOPDIR is set from
> CURDIR).
> 
> In general this should be a sensible default, and in cases where a
> different date is required SOURCE_DATE_EPOCH can be defined in the
> environment before invoking make.
> 
> Signed-off-by: James Byrne <james.byrne@origamienergy.com>
> ---
>  Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com