"mplayer", "mencoder"w build fails on i386 using GCC 10

["John D. Baker" <jdbaker%consolidated.net@localhost>]

Building "multimedia/mplayer" or "multimedia/mencoder" on i386 using
GCC 10 (-current, netbsd-10, netbsd-9 w/pkgsrc GCC10) fails as follows:

[...]
./codec-cfg etc/codecs.conf > codecs.conf.h
Reading optional codecs config file etc/codecs.conf: 226 audio & 469 video codecs
cc -MMD -MP -Icompat/atomics/gcc -D_ISOC99_SOURCE -I. -O2 -I/usr/pkg/include/cdparanoia -fPIC -D_FORTIFY_SOURCE=2 -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fno-asynchronous-unwind-tables -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fpic -fpie -DPIC -D_THREAD_SAFE -I/usr/pkg/include -I/usr/pkg/include/p11-kit-1 -I/usr/X11R7/include -I/usr/pkg/include/ -I/usr/pkg/include -I/usr/X11R7/include/freetype2 -DZLIB_CONST -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include -c -o codec-cfg.o codec-cfg.c
codec-cfg.c: In function 'parse_codec_cfg':
codec-cfg.c:632:22: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  632 |         video_codecs = builtin_video_codecs;
      |                      ^
codec-cfg.c:633:22: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  633 |         audio_codecs = builtin_audio_codecs;
      |                      ^
codec-cfg.c:636:20: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  636 |         codec_strs = builtin_codec_strs;
      |                    ^
cc -MMD -MP -Icompat/atomics/gcc -D_ISOC99_SOURCE -I. -O2 -I/usr/pkg/include/cdparanoia -fPIC -D_FORTIFY_SOURCE=2 -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fno-asynchronous-unwind-tables -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fpic -fpie -DPIC -D_THREAD_SAFE -I/usr/pkg/include -I/usr/pkg/include/p11-kit-1 -I/usr/X11R7/include -I/usr/pkg/include/ -I/usr/pkg/include -I/usr/X11R7/include/freetype2 -DZLIB_CONST -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include -c -o mpcommon.o mpcommon.c
mpcommon.c: In function 'init_vo_spudec':
mpcommon.c:140:83: warning: taking address of packed member of 'struct <anonymous>' may result in an unaligned pointer value [-Waddress-of-packed-member]
  140 |         vo_spudec      = spudec_new_scaled(((dvd_priv_t *)(stream->priv))->cur_pgc->palette,
      |                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
cc -MMD -MP -Icompat/atomics/gcc -D_ISOC99_SOURCE -I. -O2 -I/usr/pkg/include/cdparanoia -fPIC -D_FORTIFY_SOURCE=2 -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fno-asynchronous-unwind-tables -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -I/usr/pkg/include -I/usr/X11R7/include -I/usr/include -I/usr/pkg/include/faad2 -I/usr/pkg/include/SDL -I/usr/X11R7/include/libdrm -I/usr/X11R7/include/freetype2 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/harfbuzz -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include -fpic -fpie -DPIC -D_THREAD_SAFE -I/usr/pkg/include -I/usr/pkg/include/p11-kit-1 -I/usr/X11R7/include -I/usr/pkg/include/ -I/usr/pkg/include -I/usr/X11R7/include/freetype2 -DZLIB_CONST -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include/ffmpeg5 -I/usr/pkg/include -c -o libmpcodecs/vf_gradfun.o libmpcodecs/vf_gradfun.c
libmpcodecs/vf_gradfun.c: In function 'blur_line_sse2':
libmpcodecs/vf_gradfun.c:196:5: error: 'asm' operand has impossible constraints
  196 |     __asm__ volatile(\
      |     ^~~~~~~
libmpcodecs/vf_gradfun.c:231:9: note: in expansion of macro 'BLURV'
  231 |         BLURV("movdqu");
      |         ^~~~~
libmpcodecs/vf_gradfun.c:196:5: error: 'asm' operand has impossible constraints
  196 |     __asm__ volatile(\
      |     ^~~~~~~
libmpcodecs/vf_gradfun.c:233:9: note: in expansion of macro 'BLURV'
  233 |         BLURV("movdqa");
      |         ^~~~~
gmake: *** [Makefile:730: libmpcodecs/vf_gradfun.o] Error 1
*** Error code 2

Stop.
make[1]: stopped in /x/pkgsrc/multimedia/mplayer
*** Error code 1

Stop.
make: stopped in /x/pkgsrc/multimedia/mplayer


Since mplayer, mencoder are essentially leaf packages, netbsd-9 can
simply use the stock GCC 7.5 to build them.  NetBSD-10 and -current need
fixed.

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