[U-Boot] [PATCH v3 11/14] dtbo: make dtbos special

[Stephen Warren]

On 09/15/2017 09:50 AM, Stephen Warren wrote:
> On 09/04/2017 02:12 PM, Pantelis Antoniou wrote:
>> Special rule for dtbo generation
> 
>> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> 
>> +quiet_cmd_dtco = DTCO    $@
>> +# Rule for objects only; does not put specific u-boot include at the end
>> +# No generation of assembly file either
>> +# Modified for U-Boot
>> +cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
>> +    $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
>> +    $(DTC) -@ -O dtb -o $@ -b 0 \
>> +        -i $(dir $<) $(DTC_FLAGS) \
>> +        -d $(depfile).dtc.tmp $(dtc-tmp) ; \
> 
> As of u-boot-fdt/master commit 503afc3ca1e5 "test: overlay: Add unit 
> test for stacked overlay", the U-Boot build fails for sandbox with the 
> error below. I guess it's due to this commit. Does U-Boot now 
> intentionally rely on a newer dtc or is this an accident?
> 
>    DTC     test/overlay/test-fdt-base.dtb
>    LD      lib/libfdt/built-in.o
>    CC      lib/charset.o
>    CC      lib/rsa/rsa-verify.o
> dtc: invalid option -- '@'
> Usage: dtc [options] <input file>
> 
> Options: -[qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv]
>    -q, --quiet
>      Quiet: -q suppress warnings, -qq errors, -qqq all
> ...

Related, the following check in Makefile doesn't trigger:

checkdtc:
	@if test $(call dtc-version) -lt 0104; then \
		echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
		false; \
	fi

... because I have dtc 1.4.0. If U-Boot requires a new version now, that 
Makefile chunk should be updated.