[U-Boot] [PATCH v3] config.mk: use memoization in cc-option macro to speed up compilation

[Wolfgang Denk]

Dear Daniel Schwierzeck,

In message <1320679603-24847-1-git-send-email-daniel.schwierzeck at googlemail.com> you wrote:
> Apply memoization to cc-option macro by caching the results of the
> gcc calls. This macro is called very often so using cached results
> leads to faster compilation times.
> 
> The old behaviour can be restored by defining the config option
> CONFIG_CC_OPT_CACHE_DISABLE=y.
> 
> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck at googlemail.com>
> ---
> Changes for v3:
>  - reworked handling of non-working gcc options
>  - add config option CONFIG_CC_OPT_CACHE_DISABLE
> 
> Changes for v2:
>  - move cache file to $(obj)/include/generated
>  - reworked completely
>  - cache also non-working gcc options
>  - remove CACHE_CC_OPTIONS config switch and enable this optimization
>    by default
> 
>  config.mk |   20 ++++++++++++++++++--
>  1 files changed, 18 insertions(+), 2 deletions(-)

Applied, thanks.

Best regards,

Wolfgang Denk

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