config.status: creating build-config config.status: creating config.h The mkvtoolnix configuration is complete. Optional features that are built: * FLAC audio * LZO compression * BZ2 compression * GUIs (wxWidgets version) * GUIs (Qt version) * libMagic file type detection * translations (gettext) Optional features that are NOT built: * online update checks (via libcurl) >>> Source configured. >>> Compiling source in /chroot/build/portage/media-video/mkvtoolnix-5.9.0/work/mkvtoolnix-5.9.0 ... ruby: no such file to load -- auto_gem (LoadError) * ERROR: media-video/mkvtoolnix-5.9.0 failed (compile phase): * (no error message) * * Call stack: * ebuild.sh, line 93: Called src_compile * environment, line 3121: Called die * The specific snippet of code: * ./drake V=1 -j$(makeopts_jobs) || die Portage 2.2.0_alpha149 (default/linux/amd64/10.0/desktop/kde, gcc-4.7.2, glibc-2.16.0, 3.7.1-vs2.3.5.4 x86_64) ================================================================= System uname: Linux-3.7.1-vs2.3.5.4-x86_64-AMD_Phenom-tm-_II_X4_965_Processor-with-gentoo-2.2 Timestamp of tree: Mon, 07 Jan 2013 05:30:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 app-shells/bash: 4.2_p42 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.3-r3 dev-util/cmake: 2.8.10.2-r1 dev-util/pkgconfig: 0.27.1 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.6 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.11.6, 1.12.6 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.7.2 sys-devel/gcc-config: 1.8 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.7 (virtual/os-headers) sys-libs/glibc: 2.16.0 Repositories: gentoo ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe -ggdb" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -pipe -ggdb" DISTDIR="/chroot/distfiles" EMERGE_DEFAULT_OPTS="--quiet-build=n" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://mirrors.sohu.com/gentoo/ http://ftp.kaist.ac.kr/pub/gentoo/ http://gentoo.mirrors.hoobly.com/" LANG="POSIX" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j6" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/chroot/build" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acpi alsa amd64 bash-completion berkdb bluetooth branding bzip2 cairo cdda cdr cjk cli compat consolekit crypt cups curl cxx dbus declarative dri dts dvd dvdr dvdread emboss encode exif expat fam ffmpeg firefox flac foomaticdb fortran ftp gcj gd gdbm gif gnutls gpm gtk iconv icq idn imagemagick imap imlib innodb ipod ipv6 jabber javascript jingle jpeg jpeg2k kde kdehiddenvisibility kipi lame lcms libnotify lzo mad matroska md5sum midi mmap mmx mng modules mp3 mp4 mpeg mplayer msn mudflap multilib musepack musicbrainz mysql ncurses nls nptl nsplugin offensive ogg openal openexr opengl openmp oscar pam pango pcre pdf perl php plasma png policykit ppds python qt3support qt4 quicktime r600-llvm-compiler raw rdesktop readline rss samba sdl semantic-desktop session speex spell sqlite sqlite3 sse sse2 sse3 ssl ssse3 startup-notification subversion svg syslog taglib tcpd threads tidy tiff tk truetype udev udisks unicode upower usb vlc vorbis wifi wmf wxwidgets wxwindows x264 xattr xcb xcomposite xine xinerama xml xmlrpc xpm xscreensaver xulrunner xv xvid zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev" KERNEL="linux" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en en_GB de de_DE" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" QEMU_SOFTMMU_TARGETS="x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="radeon r600" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
This seems like bug #158455.
I ran into this problem as well but it turned out to be a case of PEBKAC. Make sure that your active version of ruby is listed in RUBY_TARGETS in /etc/make.conf and rebuild dev-ruby packages if necessary (especially dev-ruby/rubygems).
Closing as works for me since I think it's an issue with your ruby setup as mentioned previously.
