On 11/21/2018 9:57 PM, Xiang, Haihao wrote:
> On Wed, 2018-11-21 at 12:27 -0300, James Almer wrote:
>> On 11/20/2018 11:47 PM, Haihao Xiang wrote:
>>> This fixes the link errors below:
>>>
>>> LD ffmpeg_g
>>> libavfilter/libavfilter.so: undefined reference to `ff_scene_sad_avx2'
>>> libavfilter/libavfilter.so: undefined reference to `ff_scene_sad_sse2'
>>> collect2: error: ld returned 1 exit status
>>> Makefile:108: recipe for target 'ffmpeg_g' failed
>>> make: *** [ffmpeg_g] Error 1
>>>
>>> Signed-off-by: Haihao Xiang <haihao.xi...@intel.com>
>>> ---
>>> libavfilter/x86/scene_sad_init.c | 10 ++++++++++
>>> 1 file changed, 10 insertions(+)
>>>
>>> diff --git a/libavfilter/x86/scene_sad_init.c
>>> b/libavfilter/x86/scene_sad_init.c
>>> index 461fa406d9..7e93ef44d3 100644
>>> --- a/libavfilter/x86/scene_sad_init.c
>>> +++ b/libavfilter/x86/scene_sad_init.c
>>> @@ -20,6 +20,7 @@
>>> #include "libavutil/x86/cpu.h"
>>> #include "libavfilter/scene_sad.h"
>>>
>>> +#if HAVE_X86ASM
>>> #define SCENE_SAD_FUNC(FUNC_NAME, ASM_FUNC_NAME,
>>> MMSIZE) \
>>> void
>>> ASM_FUNC_NAME(SCENE_SAD_PARAMS); \
>>>
>>> \
>>> @@ -50,3 +51,12 @@ ff_scene_sad_fn ff_scene_sad_get_fn_x86(int depth)
>>> }
>>> return NULL;
>>> }
>>> +
>>> +#else
>>> +
>>> +ff_scene_sad_fn ff_scene_sad_get_fn_x86(int depth)
>>> +{
>>> + return NULL;
>>> +}
>>> +
>>> +#endif
>>> \ No newline at end of file
>>
>> Can you test the attached patch? It's more in line with how other asm
>> modules with the same issue were fixed before, like synth_filter in
>> libavcodec.
>
> Yes, your patch works for me. However I think you should check
> HAVE_AVX2_EXTERNAL as well in ff_scene_sad_get_fn_x86(), otherwise the link
> error still exists if HAVE_X86ASM is 1 but HAVE_AVX2_EXTERNAL is 0. Both
> HAVE_X86ASM and HAVE_AVX2_EXTERNAL are 0 on my system.
You're right, fixed and applied. Thanks.
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