Starting Audacity with media-libs/vamp-libxtract-plugins installed and vamp plugins enabled indicates that it cannot be loaded due to a missing symbol ("xtract"). This symbol is in fact present in libxtract.so, but that library is not linked to by vamp-libxtract.so. Since the latter is, AFAICT, just a thin wrapper around the former, this is presumably incorrect. Using LD_PRELOAD to load libxtract.so results in it loading without any error messages. This is enough to run it from vamp-simple-host, but the plugins still don't show up in Audacity. The latter problem may be unrelated. Reproducible: Always Portage 2.3.6-r9 (funtoo/1.0/linux-gnu/arch/x86-64bit, gcc-4.8.2, glibc-2.18-r1, 3.15.5-gentoo x86_64) ================================================================= System uname: Linux-3.15.5-gentoo-x86_64-Intel-R-_Core-TM-_i5-3570_CPU_@_3.40GHz-with-gentoo-2.2.0 KiB Mem: 16388172 total, 3086544 free KiB Swap: 16777212 total, 16777212 free Timestamp of tree: Unknown ld GNU ld (GNU Binutils) 2.23.2 app-shells/bash: 4.2_p45-r1 dev-java/java-config: 2.2.0-r1000 dev-lang/python: 2.7.8-r1000, 3.3.5-r1000, 3.4.1-r1000 dev-util/cmake: 2.8.12.2-r1 sys-apps/baselayout: 2.2.0-r6 sys-apps/openrc: 0.12.3-r3 sys-apps/sandbox: 2.6-r2 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6, 1.12.6, 1.13.4 sys-devel/binutils: 2.23.2 sys-devel/gcc: 4.8.2-r3 sys-devel/gcc-config: 1.8 sys-devel/libtool: 2.4.2 sys-devel/make: 4.0-r1 sys-kernel/linux-headers: 3.13 (virtual/os-headers) sys-libs/glibc: 2.18-r1 Repositories: gentoo gamerlay sage-on-gentoo gentoo-haskell science hasufell java luman steam-overlay x11 local ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="${CONFIG_PROTECT} /etc /etc/idea/conf /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0 /usr/share/themes/oxygen-gtk/gtk-3.0" 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 /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch xattr" FFLAGS="" GENTOO_MIRRORS="rsync://gentoo.mirrors.tds.net/gentoo http://gentoo.mirrors.tds.net/gentoo ftp://gentoo.mirrors.pair.com/" LANG="en_AU.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--as-needed" LINGUAS="en_AU en_GB en" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/var/lib/layman/gamerlay /var/lib/layman/sage-on-gentoo /var/lib/layman/haskell /var/lib/layman/science /var/lib/layman/hasufell /var/lib/layman/java /var/lib/layman/luman /var/lib/layman/steam /var/lib/layman/x11 /usr/local/portage" SYNC="git://github.com/funtoo/ports-2012.git" SYNC_USER="root" USE="X acl alsa amd64 apng avx berkdb bzip2 caps cdr cracklib crypt cups cxx dbus dri dvd dvdr dvdread flac gdbm gif gpm hoogle iconv icu ipv6 jpeg lame libnotify mad mmx modules mp3 mpeg mudflap multilib ncurses nls nptl nsplugin ogg opengl openmp pam pcre png pppd python readline resolvconf sse sse2 ssl ssse3 tcpd tiff truetype udev unicode vim-syntax vorbis wavpack win32codecs xattr xml zlib" ABI_X86="64 32" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel ice1724 intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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="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 authn_core authz_core socache_shmcb unixd" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" 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 ublox ubx" INPUT_DEVICES="evdev wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en_AU en_GB en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_ABIS="2.7 3.3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby19 ruby20 ruby21" STEAMGAMES="dwarfs" USERLAND="GNU" VIDEO_CARDS="radeon radeonsi" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, SYNC_UMASK
