[U-Boot] [PATCH] kbuild: clear VENDOR variable to fix build error on tcsh

[Jeroen Hofstee <jeroen@myspectrum.nl>]

Thanks Masahiro,

On 21-10-14 06:18, Masahiro Yamada wrote:
> Since the environment "VENDOR" is set in tcsh, it must be cleared in our
> makefile.  Otherwise, boards without CONFIG_SYS_VENDOR fail to build:
>
>    > make CROSS_COMPILE=arm-linux-gnueabi- wandboard_quad_defconfig all
>      [ snip ]
>      AR      arch/arm/lib/lib.a
>      CC      arch/arm/lib/eabi_compat.o
>    scripts/Makefile.build:55: /home/foo/u-boot/board/unknown/wandboard/ \
>    Makefile: No such file or directory
>    make[2]: *** No rule to make target `/home/foo/u-boot/board/unknown/ \
>    wandboard/Makefile'.  Stop.
>    make[1]: *** [board/unknown/wandboard] Error 2
>    make: *** [__build_one_by_one] Error 2
>
> Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
> Reported-by: Tom Everett <tom@khubla.com>
> Reported-by: Jeroen Hofstee <jeroen@myspectrum.nl>
> ---
>
>   config.mk | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/config.mk b/config.mk
> index 2157537..00805bd 100644
> --- a/config.mk
> +++ b/config.mk
> @@ -18,6 +18,8 @@ PLATFORM_LDFLAGS :=
>   LDFLAGS :=
>   LDFLAGS_FINAL :=
>   OBJCOPYFLAGS :=
> +# clear VENDOR for tcsh
> +VENDOR :=
>   #########################################################################
>   
>   ARCH := $(CONFIG_SYS_ARCH:"%"=%)

ah, understood now. Make does suck in the complete env as make
variables but assignments will overwrite the value. make VENDOR=bla
would ignore the assignment unless overridden. The ifneq below
causes the VENDOR never to be assigned in some cases and hence
the value from the original env is used. So

Acked-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>

Regards,
Jeroen