[U-Boot] [PATCH v3] Makefile: fix parallel build

[Wolfgang Denk]

Dear Daniel Hobi,

In message <1263834819-15315-1-git-send-email-daniel.hobi at schmid-telecom.ch> you wrote:
> During parallel build, the top Makefile spawns multiple sub-makes for
> targets in cpu/$(CPU) and $(dir $(LDSCRIPT)). If the .depend files are
> not present in these directories, the sub-makes may end up generating
> these files simultaneously which leads to corrupted content.
> 
> A typical error message is:
> 
> .depend:39: *** multiple target patterns.  Stop.
> 
> This patch serializes the creation of .depend in cpu/$(CPU) and
> $(dir $(LDSCRIPT)) by adding these directories to the depend target
> in the top Makefile.
> 
> Other directories in $(LIBS) are not affected since they contain only
> one Make target and thus only one sub-make is spawned per directory.
> 
> Signed-off-by: Daniel Hobi <daniel.hobi at schmid-telecom.ch>
> ---
> v3:
>  - Add a comment why make _depend is required for these two subdirs
> v2:
>  - Also build target depend in $(dir $(LDSCRIPT)) (suggested by Mike)
>  - Break overlong line
> 
>  Makefile |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)

Applied, thanks.

Best regards,

Wolfgang Denk

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