[FFmpeg-trac] #7048(avcodec:reopened): Altivec compilation broken by --enable-small (was: building 3.4.2 with gcc 7.3.0 with altivec support enabled fails on ppc (Gentoo Linux))

[FFmpeg]

#7048: Altivec compilation broken by --enable-small
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  ernsteiswuerfel                    |                   Status:  reopened
                 Type:  defect       |                Component:  avcodec
             Priority:  important    |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:  gcc altivec  |  Reproduced by developer:  1
  ppc regression                     |
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * reproduced:  0 => 1
 * component:  build system => avcodec
 * priority:  normal => important
 * version:  unspecified => git-master
 * keywords:  gcc altivec ppc => gcc altivec ppc regression


Comment:

 I can confirm the issue with the following simplified configure line and
 gcc 4.8.5, gcc 6.3.1, gcc 7.2.0 and gcc 7.2.1, I was unable to find a gcc
 version that does not allow to reproduce:
 {{{
 $ ./configure --enable-small && make libavcodec/ppc/hevcdsp.o
 }}}
 Regression since f6e8d54f

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Ticket URL: <https://trac.ffmpeg.org/ticket/7048#comment:8>
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