* Package:    media-video/ffmpeg-2.5
 * Repository: gentoo
 * Maintainer: media-video@gentoo.org
 * USE:        X aac aacplus abi_x86_32 abi_x86_64 alsa amd64 avx avx2 bzip2 elibc_glibc encode faac fftools_aviocat fftools_cws2fws fftools_ffescape fftools_ffeval fftools_ffhash fftools_fourcc2pixfmt fftools_graph2dot fftools_ismindex fftools_pktdumper fftools_qt-faststart fftools_trasher gnutls hardcoded-tables iconv ieee1394 kernel_linux mmx mmxext mp3 network opengl pulseaudio schroedinger sdl sse sse2 sse3 sse4 sse4_2 ssse3 theora threads truetype twolame userland_GNU vaapi vdpau vorbis vpx x264 x265 xcb xvid zlib
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking ffmpeg-2.5.tar.bz2 to /var/tmp/portage/media-video/ffmpeg-2.5/work
>>> Source unpacked in /var/tmp/portage/media-video/ffmpeg-2.5/work
>>> Preparing source in /var/tmp/portage/media-video/ffmpeg-2.5/work/ffmpeg-2.5 ...
 * Applying samba.patch ...
 [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/media-video/ffmpeg-2.5/work/ffmpeg-2.5 ...
 * abi_x86_32.x86: running multilib-minimal_abi_src_configure
/var/tmp/portage/media-video/ffmpeg-2.5/work/ffmpeg-2.5/configure --prefix=/usr --libdir=/usr/lib32 --shlibdir=/usr/lib32 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc -m32 -march=native -O2 -pipe -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -ftree-vectorize --cxx=x86_64-pc-linux-gnu-g++ -m32 -march=native -O2 -pipe -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -ftree-vectorize --ar=ar --optflags=-march=native -O2 -pipe -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -ftree-vectorize --extra-cflags=-march=native -O2 -pipe -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -ftree-vectorize --extra-cxxflags=-march=native -O2 -pipe -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -ftree-vectorize --disable-static --enable-gpl --enable-postproc --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --enable-nonfree --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-doc --enable-gnutls --enable-hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-openssl --disable-libsmbclient --enable-ffplay --enable-vaapi --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-zlib --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --enable-libaacplus --enable-libfaac --enable-libtheora --enable-libtwolame --disable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --disable-libcdio --disable-libiec61883 --enable-libdc1394 --disable-libcaca --disable-openal --enable-opengl --disable-libv4l2 --enable-libpulse --enable-x11grab --disable-libbs2b --disable-libflite --disable-frei0r --disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass --enable-libfreetype --disable-libsoxr --enable-pthreads --disable-libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --disable-libopus --disable-libquvi --disable-librtmp --disable-libssh --enable-libschroedinger --disable-libspeex --enable-libvorbis --enable-libvpx --disable-libzvbi --disable-frei0r --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-neon --disable-vfp --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --disable-mipsfpu --disable-altivec --disable-amd3dnow --disable-amd3dnowext --disable-fma3 --disable-fma4 --disable-xop --cpu=host
ERROR: x265 not found using pkg-config

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.
 * ERROR: media-video/ffmpeg-2.5::gentoo failed (configure phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line   93:  Called src_configure
 *   environment, line 3059:  Called multilib-minimal_src_configure
 *   environment, line 2154:  Called multilib_foreach_abi 'multilib-minimal_abi_src_configure'
 *   environment, line 2361:  Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_configure'
 *   environment, line 2085:  Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_configure'
 *   environment, line 2083:  Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_configure'
 *   environment, line  617:  Called multilib-minimal_abi_src_configure
 *   environment, line 2148:  Called multilib_src_configure
 *   environment, line 2670:  Called die
 * The specific snippet of code:
 *       "${@}" || die
 * 
 * If you need support, post the output of `emerge --info '=media-video/ffmpeg-2.5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=media-video/ffmpeg-2.5::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/media-video/ffmpeg-2.5/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/media-video/ffmpeg-2.5/temp/environment'.
 * Working directory: '/var/tmp/portage/media-video/ffmpeg-2.5/work/ffmpeg-2.5-abi_x86_32.x86'
 * S: '/var/tmp/portage/media-video/ffmpeg-2.5/work/ffmpeg-2.5'