[PATCH] Makefile: Fix u-boot-nodtb.bin target

[Simon Glass]

On Wed, 7 Oct 2020 at 07:39, Pali Rohár <pali at kernel.org> wrote:
>
> This change fixes two issues when building u-boot-nodtb.bin target:
>
> * Remove intermediate binary u-boot-nodtb.bin from disk when static_rela
>   call (which modifies u-boot-nodtb.bin binary) failed. It is required
>   because previous objcopy call creates binary and static_rela finish it.
>
> * Do not call static_rela cmd when u-boot-nodtb.bin binary was not
>   created/updated by previous objcopy call.
>
> Second fix would ensure that u-boot-nodtb.bin binary is not updated when
> all prerequisites were up-to-date. And therefore final binary u-boot.bin
> is not updated in case all prerequisites were not modified and were
> up-to-date.
>
> Now running 'make SOURCE_DATE_EPOCH=0 u-boot.bin' second time now does not
> touch u-boot.bin binary in case nothing was modified, so GNU make can
> correctly detect that everything is up-to-date.
>
> Signed-off-by: Pali Rohár <pali at kernel.org>
> ---
>  Makefile | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)

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