[U-Boot] [PATCH 1/2] common: Add CCACHE variable to allow use of ccache

[Wolfgang Denk]

Dear Marek Vasut,

In message <1369070715-9585-2-git-send-email-marex at denx.de> you wrote:
> Prefix HOSTCC and CC with CCACHE variable to allow easy use of ccache.
> In case the user wants to use ccache, exporting CCACHE=ccache will do
> the trick. It is of course possible to either make the cross-compiler
> name into a shellscript which invokes the ccache and the compiler, but
> setting this variable makes use of ccache easier and more convenient.
...
> -AS	= $(CROSS_COMPILE)as
> +AS	= $(CCACHE) $(CROSS_COMPILE)as
>  
>  # Always use GNU ld
>  LD	= $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \
>  		then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;)
>  
> -CC	= $(CROSS_COMPILE)gcc
> +CC	= $(CCACHE) $(CROSS_COMPILE)gcc
>  CPP	= $(CC) -E

Why not for CPP ?

Best regards,

Wolfgang Denk

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