[ebuild  r  U ] media-libs/opencv-3.4.1 [3.3.0-r5] USE="contrib cuda eigen ffmpeg gtk opencl openexr opengl openmp png python qt5 tesseract threads tiff v4l vaapi webp xine -contrib_cvv -contrib_dnn -contrib_hdf -contrib_sfm -contrib_xfeatures2d -debug -dnn_samples% -examples -gdal -gflags -glog -gphoto2 -gstreamer -ieee1394 (-ipp) -java -jpeg -jpeg2k -lapack -libav -pch -testprograms -vtk" ABI_X86="(64) -32 (-x32)" CPU_FLAGS_X86="avx%* avx2%* fma3%* popcnt%* sse%* sse2%* sse3%* sse4_1%* sse4_2%*" PYTHON_TARGETS="python2_7 python3_4 python3_5 python3_6" 
[ebuild  rR   ] media-video/vlc-2.2.8-r1  USE="X a52 alsa avcodec avformat bluray cdda cddb dbus dts dvb dvbpsi dvd encode ffmpeg flac gcrypt gnome gnutls libass libcaca libsamplerate lirc matroska mp3 mpeg ncurses ogg opencv opengl optimisememory png pulseaudio qt5 samba schroedinger shout svg swscale truetype udev v4l vaapi vcdx vdpau vlm vnc vorbis vpx x264 x265 xcb xml xv zvbi -aalib (-altivec) -atmo (-audioqueue) -bidi -chromaprint -dc1394 -debug (-directx) (-dxva2) -faad -fdk -fluidsynth -fontconfig -gme -growl -gstreamer -httpd -ieee1394 -jack -jpeg -kate -libav -libnotify -libtar -libtiger -linsys -live -lua (-macosx-dialog-provider) (-macosx-eyetv) (-macosx-qtkit) (-macosx-quartztext) -modplug -mtp -musepack (-neon) -omxil -opus -postproc -projectm -rdp -rtsp -run-as-root -sdl -sdl-image -sftp -sid -skins -speex -taglib {-test} -theora -tremor -twolame -upnp -wma-fixed -zeroconf" CPU_FLAGS_X86="mmx sse" 
[ebuild  rR   ] media-plugins/frei0r-plugins-1.6.1  USE="facedetect scale0tilt -doc" 

The following packages are causing rebuilds:

  (media-libs/opencv-3.4.1:0/3.4.1::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (media-video/vlc-2.2.8-r1:0/5-8::gentoo, ebuild scheduled for merge)
    (media-plugins/frei0r-plugins-1.6.1:0/0::gentoo, ebuild scheduled for merge)

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