[Buildroot] [PATCH v2] binutils/ARC: cleanup

[Vineet Gupta]

Hi Thomas,

On 12/22/19 1:41 PM, Thomas Petazzoni wrote:
> Hello Vineet,
> 
> On Tue, 17 Dec 2019 13:32:53 -0800
> Vineet Gupta <Vineet.Gupta1-HKixBCOQz3hWk0Htik3J/w at public.gmane.org> wrote:
> 
>> Remove special handling for ARC - as it is not needed for cksy etc.
>>
>> A nice side benefit is that the ARC specific version now only needs to
>> be specified in single place (vs 3 currently) in binutils/Config.in.host
>>
>> Signed-off-by: Vineet Gupta <vgupta-HKixBCOQz3hWk0Htik3J/w at public.gmane.org>
>> ---
>>  package/binutils/binutils.mk | 6 +-----
>>  1 file changed, 1 insertion(+), 5 deletions(-)
>>
>> diff --git a/package/binutils/binutils.mk b/package/binutils/binutils.mk
>> index a19d6940f7c1..3ae5561d67d3 100644
>> --- a/package/binutils/binutils.mk
>> +++ b/package/binutils/binutils.mk
>> @@ -8,14 +8,10 @@
>>  # If not, we do like other packages
>>  BINUTILS_VERSION = $(call qstrip,$(BR2_BINUTILS_VERSION))
>>  ifeq ($(BINUTILS_VERSION),)
>> -ifeq ($(BR2_arc),y)
>> -BINUTILS_VERSION = arc-2019.09-rc1
>> -else
>>  BINUTILS_VERSION = 2.32
>>  endif
>> -endif # BINUTILS_VERSION
>>  
>> -ifeq ($(BINUTILS_VERSION),arc-2019.09-rc1)
>> +ifeq ($(BR2_BINUTILS_VERSION_ARC),y)

Looks like we need this specific thunk anyways. When I select pristine upstream
binutils (not ARC fork @ github), the above forces it to download from github
which it should not and will not if the tag/branch has not been mirrored there.

>>  BINUTILS_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,binutils-gdb,$(BINUTILS_VERSION))
>>  BINUTILS_SOURCE = binutils-gdb-$(BINUTILS_VERSION).tar.gz
>>  BINUTILS_FROM_GIT = y
> 
> In fact, I was wrong, this also does not work, in the following
> situation:
> 
>  - You're using a pre-compiled external toolchain, so host-binutils is
>    not selected/enabled, so the version selection in
>    package/binutils/Config.in.host is not used, and therefore
>    BR2_BINUTILS_VERSION_ARC cannot be set to 'y'.
> 
>  - You have binutils enabled for the target.
> 
> Then, with your patch, we will no longer select the ARC-specific fork
> of binutils.
> 
> Basically, for the target binutils (just like for target gdb), we don't
> have any version selection, so we force using one specific version
> depending on the architecture.
> 
> Best regards,
> 
> Thomas
>