[Buildroot] [PATCHv4] Makefile: fix performance regression casued by the umask handling

[Yann E. MORIN <yann.morin.1998@free.fr>]

Arnout, Guido, All,

On 2015-07-17 00:35 +0200, Arnout Vandecappelle spake thusly:
> On 07/17/15 00:33, Yann E. MORIN wrote:
> > From: Guido Mart?nez <guido@vanguardiasur.com.ar>
> > 
> > Commit bee5745c introduced an extra level of 'make' when the umask is
> > different from 0022. However, when several targets were specified on
> > the command line, a new make instance would be called for each target.
> > This introduces a huge performance overhead when many targets are
> > specified on the command line.
> > 
> > To fix this, use the same approach as used in the mkmakefile script:
> > an addition target on which the MAKECMDGOALS depend, so that this
> > target is run only once.
> > 
> > Note that the mkmakefile script contains a special exception for
> > Makefile, because the Makefile in the output directory is generated.
> > Since the top-level Makefile is not generated, this exception is not
> > needed here.
> > 
> > While we're at it, also fix the whitespace in the UMASK assignment.
> > 
> > Signed-off-by: Guido Mart?nez <guido@vanguardiasur.com.ar>
> > Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> > [yann.morin.1998 at free.fr: aggregate patches from Arnout and Guido]
> > Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
> 
> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> 
>  Someone finally got it right :-)

Almost... I made a typo in the subject... ;-]

Regards,
Yann E. MORIN.

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