[FFmpeg-trac] #641(build system:new): Build fails with --disable-mmx2 flag (error: implicit declaration of function 'yuv2yuvX_MMX2')

[FFmpeg]

#641: Build fails with --disable-mmx2 flag (error: implicit declaration of
function 'yuv2yuvX_MMX2')
-------------------------------------+-------------------------------------
             Reporter:  Spekadyon    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  build        |                  Version:  git-
  system                             |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Running configure with --disable-mmx2, with no other options, makes the
 build fail with the following error:

 {{{
 CC      libswscale/x86/swscale_mmx.o
 In file included from libswscale/x86/swscale_mmx.c:89:0:
 libswscale/x86/swscale_template.c: In function 'sws_init_swScale_MMX':
 libswscale/x86/swscale_template.c:1873:21: warning: unused variable
 'should_dither'
 libswscale/x86/swscale_template.c:1942:44: warning: assignment from
 incompatible pointer type
 libswscale/x86/swscale_template.c:1943:44: warning: assignment from
 incompatible pointer type
 libswscale/x86/swscale_template.c:1954:42: warning: assignment from
 incompatible pointer type
 libswscale/x86/swscale_template.c:1955:42: warning: assignment from
 incompatible pointer type
 libswscale/x86/swscale_mmx.c: In function 'updateMMXDitherTables':
 libswscale/x86/swscale_mmx.c:131:9: warning: new qualifiers in middle of
 multi-level non-const cast are unsafe
 libswscale/x86/swscale_mmx.c:132:9: warning: new qualifiers in middle of
 multi-level non-const cast are unsafe
 libswscale/x86/swscale_mmx.c:133:9: warning: new qualifiers in middle of
 multi-level non-const cast are unsafe
 libswscale/x86/swscale_mmx.c: In function 'yuv2yuvX_sse3':
 libswscale/x86/swscale_mmx.c:184:9: error: implicit declaration of
 function 'yuv2yuvX_MMX2'
 libswscale/x86/swscale_mmx.c:184:9: warning: 'return' with a value, in
 function returning void
 libswscale/x86/swscale_mmx.c: At top level:
 libswscale/x86/swscale_mmx.c:179:13: warning: 'yuv2yuvX_sse3' defined but
 not used
 make: *** [libswscale/x86/swscale_mmx.o] Error 1
 make: *** Waiting for unfinished jobs....
 }}}

 This does not occur with the --enable-mmx2 flag.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/641>
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