[U-Boot] [PATCH] kbuild: define DO_DEPS_ONLY for u-boot.cfg to fix build error

[Simon Glass]

On 25 May 2015 at 21:51, Masahiro Yamada <yamada.masahiro at socionext.com> wrote:
> Since 741e58e0fc8e (Create a .cfg file containing the CONFIG options
> used to build), all the Blackfin boards fail to build if the parallel
> (-j) option is passed.
>
>   $ make -s bf506f-ezkit_defconfig
>   #
>   # configuration written to .config
>   #
>   $ make -j8 CROSS_COMPILE=bfin-elf-
>   scripts/kconfig/conf --silentoldconfig Kconfig
>     CHK     include/config.h
>     UPD     include/config.h
>     GEN     include/autoconf.mk
>     GEN     include/autoconf.mk.dep
>     CHK     include/config/uboot.release
>     CHK     include/generated/timestamp_autogenerated.h
>     UPD     include/generated/timestamp_autogenerated.h
>     CFG     u-boot.cfg
>   include/asm-offsets.h:3:43: fatal error:
>   generated/generic-asm-offsets.h: No such file or directory
>   compilation terminated.
>   make: *** [u-boot.cfg] Error 1
>
> When parsing header files for defined CONFIG options, DO_DEPS_ONLY
> must be defined to exclude generated headers that might not have
> been available yet.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
> ---
>
>  Makefile             | 2 +-
>  scripts/Makefile.spl | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>