[x264-devel] arm64 build error

[Krzysztof Hebel]

Hi Janne,

Thank you, that helped. Much appreciated!

Best regards,
Krzysztof

On Fri, Oct 9, 2015 at 9:55 AM, Janne Grunau <janne-x264 at jannau.net> wrote:
> Hi,
>
> On 2015-10-08 20:51:51 -0400, Krzysztof Hebel wrote:
>>
>> I have been trying to build x264 for the arm64 architecture and I kept
>> seeing these errors:
>>
>> <stdin>:952:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> <stdin>:966:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> <stdin>:999:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> <stdin>:1013:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> <stdin>:1044:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> <stdin>:1058:27: error: expected integer shift amount
>>     subs w4, w4, w3, lsr #shiftw
>>                           ^
>> make[3]: *** [common/aarch64/quant-a.o] Error 1
>>
>> The problem seems to affect versions from now going back to late 2014.
>
> That's probably when the code got pushed to the main repository.
>
>> From analyzing the code it appears that somehow the "coeff_level_run
>> shift" macro is not expanded properly. Is it possible that there is a
>> bug in this section of the code?
>
> It's not really a bug since it works with as from binutils 2.24. Other
> assemblers tend to have problems in corner cases even if they are more
> or less compatible like llvm's integrated assembler.
>
> https://git.videolan.org/?p=x264/x264-sandbox.git;a=commitdiff;h=076a0cd53fa07cfad3ae5d16437ff931e6e72642
> from x264 development tree should fix this issue.
>
> HTH
>
> Janne
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