[Libav-user] Reference app with ffmpeg n1.2 libs that works on IOS ?

Lars Hammarstrand lars.hammarstrand at gmail.com
Fri Apr 5 15:26:48 CEST 2013


2013/4/5 Lars Hammarstrand <lars.hammarstrand at gmail.com>

> 2013/4/5 Lars Hammarstrand <lars.hammarstrand at gmail.com>
>
>>
>> Didn't find any gas-preprocessor.pl in the ffmpeg repo thus where do you
>> find one which is supported by ffmpeg?
>>
>> Never mind, found this ref  (in
> github.com/FFmpeg/FFmpeg/blob/master/doc/platform.texi):
> http://github.com/yuvi/gas-preprocessor, commit f4a42dc077 from Oct 03,
> 2012.  I'll try this one and get back...
>


Got some new errors with the new gas-preprocessor. Full log at:
http://pastebin.com/wF4aZGis. Brief summary:

Version info - ffmpeg e820e3a (n1.2), gas-preprocessor f4a42dc077 (Oct 03,
2012)

1. LD ffmpeg_g
ld: warning: ARM function not 4-byte aligned: empty_row from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: end_of_row_loop from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: start_column_loop from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: column_loop from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: empty_odd_column from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: the_end from
libavcodec/libavcodec.a(jrevdct_arm.o)
ld: warning: ARM function not 4-byte aligned: __b_evaluation from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __end_b_evaluation from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __a_evaluation from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __almost_empty_row from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __end_row_loop from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __end_b_evaluation2 from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __a_evaluation2 from
libavcodec/libavcodec.a(simple_idct_arm.o)
ld: warning: ARM function not 4-byte aligned: __end_simple_idct_arm from
libavcodec/libavcodec.a(simple_idct_arm.o)
*ld: in libavcodec/libavcodec.a(h264qpel_neon.o), in section __TEXT,__text
reloc 12: R_ABS reloc but no absolute symbol at target address for
architecture armv7*
collect2: ld returned 1 exit status
make: *** [ffmpeg_g] Error 1

2. A lot of warnings from gas-preprocessor.pl in libavcodec/arm: "*Unable
to identify target architecture at /usr/local/bin/gas-preprocessor.pl line
82.*"
--
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