[Buildroot] [PATCH] u-boot: 2015.07 - fix creation of .config

[Alexey Brodkin]

Hi Peter,

On Sun, 2015-08-30 at 22:51 +0200, Peter Korsgaard wrote:
> > > > > > "Alexey" == Alexey Brodkin <Alexey.Brodkin at synopsys.com> writes:
> 
>  > Due to recent changes in U-Boot, see
>  > http://git.denx.de/?p=u-boot.git;a=commit;h=a26cd04920dc069fd6e91abb785426cf6c29f45f
>  > re-creation of .config from defconfig by "make oldconfig" happened
>  > incorrectly.
> 
>  > Default prompt for target selection was set as No that lead to missing platform
>  > selection by automated scripts like that:
>  ------------------> 8------------------
>  > "yes "" | make oldconfig" on defconfig
>  ------------------> 8------------------
> 
>  > And that lead to build failure:
>  ------------------> 8------------------
>  > $ make
>  > scripts/kconfig/conf --silentoldconfig Kconfig
>  >   CHK     include/config.h
>  >   UPD     include/config.h
>  >   GEN     include/autoconf.mk
>  > In file included from ./include/common.h:18:0:
>  > include/config.h:5:22: fatal error: configs/.h: No such file or directory
>  >  #include <configs/.h>
>  >                       ^
>  > compilation terminated.
>  > scripts/Makefile.autoconf:72: recipe for target 'include/autoconf.mk' failed
>  > make[1]: *** [include/autoconf.mk] Error 1
>  ------------------> 8------------------
> 
>  > This patch reverts mentioned change making possible to build U-Boot
>  > 2015.07 in Buildroot.
> 
>  > Note there's a probability that this particular patch won't make its way
>  > in upstream U-Boot and better solution will be found there. But for now
>  > we need to fix U-Boot building in Buildroot anyways.
> 
>  > Hopefully for the next release this patch won't be necessary.
> 
>  > Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
>  > Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> 
> Committed, thanks.
> 
> While doing a test build I noticed that u-boot nowadays needs dtc:
> 
>   CHK     include/generated/timestamp_autogenerated.h
>   UPD     include/generated/timestamp_autogenerated.h
> ./scripts/dtc-version.sh: line 17: dtc: command not found
> ./scripts/dtc-version.sh: line 18: dtc: command not found
> *** Your dtc is too old, please upgrade to dtc 1.4 or newer
> Makefile:1297: recipe for target 'checkdtc' failed
> make[1]: *** [checkdtc] Error 1
> make[1]: *** Waiting for unfinished jobs....
>   UPD     include/config/uboot.release
> make[1]: *** wait: No child processes.  Stop.
> package/pkg-generic.mk:156: recipe for target '/home/peko/source/buildroot/output/build/uboot-2015.07/.stamp_built'
> failed
> 
> So perhaps we should consider adding host support to our dtc package and add
> host-dtc to the uboot dependencies?

Indeed that will help on older machines.
I haven't seen that failure just because I'm on latest Fedora so DTC is pretty recent.

I'll take a look at how to enable host DTC.

-Alexey