[U-Boot] [PATCH] kbuild: move ARCH, CPU, etc. to top Makefile to fix random build error

[York Sun <yorksun@freescale.com>]

On 03/31/2015 08:45 AM, Stephen Warren wrote:
> On 03/31/2015 06:02 AM, Masahiro Yamada wrote:
>> Since the Kconfig conversion, some developers have reported that
>> Kbuild sometimes fails completely at random.  According to the error
>> reports, it seems to occur for any target board, but only on very
>> fast computers.
>>
>> The log message for the fail case is like this:
>>
>>    make[1]: *** No rule to make target `../arch//cpu/u-boot.lds',
>>    needed by `u-boot.lds'.  Stop.
>>
>> It looks like the top config.mk has not been included for *some*
>> reason, and $(ARCH) has been left blank.
>>
>> I suspect "autoconf_is_current" is not working in some situation.
>>
>> This commit moves the definition of ARCH, CPU, SOC, etc. to the
>> top Makefile, so they are surely set.
> 
> This doesn't solve the issue for me, although it improves the chance of 
> success and changes the error I get.
> 
> With and without this patch, I ran:
> 
> CROSS_COMPILE=arm-linux-gnueabi- ./MAKEALL rpi_2
> 
> ... until whichever of success/fail had the fewest "hits" had at least 5 
> "hits".
> 
> Without this patch, the build failed 6 out of 11 runs with:
> 

Stephen is so fast, saved me time to setup and test.

Let me know if I need to run test from my side.

York