[U-Boot] [PATCH] dts/Makefile: Turn off system-/gcc-specific predefined macros

[Wolfgang Denk <wd@denx.de>]

Dear Horst Kronstorfer,

In message <1342184620-31448-1-git-send-email-hkronsto@frequentis.com> you wrote:
> Add '-undef' to DTS_CPPFLAGS to avoid unwanted expansion of dts content
> that matches system-specific or gcc-specific predefined macros.
> 
> Example: A number of PowerPC related *.dts files in the kernel define a
> property named 'linux,network-index' which (w/o '-undef') is expanded to
> '1,network-index' by the preprocessor because of '#define linux 1.'
> 
> With '-undef' in place only the standard predefined macros are visible:
> 
>  $ gcc -dM -E -undef - </dev/null
>  #define __STDC_HOSTED__ 1
>  #define __STDC__ 1
> 
> Signed-off-by: Horst Kronstorfer <hkronsto@frequentis.com>
> ---
>  dts/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

Best regards,

Wolfgang Denk

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