[U-Boot] [PATCH 2/2] Makefile: rm u-boot.cfg dependencies are missing

[Simon Glass]

On 19 September 2016 at 12:20, Stephen Warren <swarren at wwwdotorg.org> wrote:
> From: Stephen Warren <swarren at nvidia.com>
>
> Prior to the previous patch, a freshly created .u-boot.cfg.cmd may not
> correctly represent all dependencies for u-boot.cfg. The previous change
> only solved this issue for fresh builds; when performing an incremental
> build, the deficient .u-boot.cfg.cmd is already present, so u-boot.cfg
> is not rebuilt, and hence .u-boot.cfg.cmd is not rebuilt with the correct
> content.
>
> Solve this by explicitly detecting when the dependency file .u-boot.cfg.d
> has not been integrated into .u-boot.cfg.cmd, and force u-boot.cfg to be
> rebuilt in this case by deleting it first. This is possible since
> if_changed_dep will always delete .u-boot.cfg.d when it executes
> successfully, so its presence means either that the previous build was
> made by a source tree that contained a Makefile that didn't include the
> previous patch, or that the build failed part way through executing
> if_changed_dep for u-boot.cfg. Forcing a rebuild of u-boot.cfg is required
> in the former case, and will cause no additional work in the latter case,
> since the file would be rebuilt anyway for the same reason it was being
> rebuilt by the previous build.
>
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  Makefile             | 11 +++++++++++
>  scripts/Makefile.spl | 11 +++++++++++
>  2 files changed, 22 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>