Each emerge run shows the following perserved_libs lines: >>> package: dev-libs/lzo-2.06 * - /usr/lib/liblzo2.so.2 * - /usr/lib/liblzo2.so.2.0.0 * used by /usr/lib/libcairo-script-interpreter.so.2.11400.2 (x11-libs/cairo-1.14.2) Running emerge @preserved-rebuild or emerging cairo itself even repeatedly does not change that. Reproducible: Always Steps to Reproduce: 1. emerge cairo 2. 3. Actual Results: preserved_libs entry shows that cairo uses old version of liblzo Expected Results: preserved_libs entry goes away emerge --info: Portage 2.2.20 (python 2.7.10-final-0, !../data/nobackup/portage/profiles/default/linux/x86/13.0, gcc-4.8.4, glibc-2.20-r2, 3.17.8-gentoo-r1 i586) ================================================================= System uname: Linux-3.17.8-gentoo-r1-i586-Geode-TM-_Integrated_Processor_by_AMD_PCS-with-gentoo-2.2 KiB Mem: 247004 total, 13468 free KiB Swap: 995992 total, 225384 free Timestamp of repository gentoo: Tue, 06 Oct 2015 00:45:01 +0000 sh bash 4.2_p53 ld GNU ld (Gentoo 2.24 p1.4) 2.24 ccache version 3.1.9 [enabled] app-shells/bash: 4.2_p53::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.10::gentoo, 3.3.5-r1::gentoo, 3.4.3::gentoo dev-util/ccache: 3.1.9-r3::gentoo dev-util/cmake: 2.8.12.2-r1::gentoo dev-util/pkgconfig: 0.28-r1::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.13.11::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6::gentoo, 1.13.4::gentoo, 1.15::gentoo sys-devel/binutils: 2.24-r3::gentoo sys-devel/gcc: 4.8.4::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.20-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage priority: -1000 ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="* -@EULA Oracle-BCLA-JavaSE" CBUILD="i586-pc-linux-gnu" CFLAGS="-march=geode -Os -pipe -fomit-frame-pointer -mmmx -m3dnow" CHOST="i586-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cli-php5.5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=geode -Os -pipe -fomit-frame-pointer -mmmx -m3dnow -g0" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-logs ccache collision-protect compress-build-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict test-fail-continue unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo " LANG="de_DE.utf8" LC_ALL="de_DE@euro" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" USE="3dnow X aac acl acpi alsa berkdb branding bzip2 cddb cli crypt curl custom-optimization cxx dbus gdbm gif gimp gtk iconv jpeg mailwrapper mmx modules mp3 mpeg ncurses nls nptl pam pch pcre png readline rrdtool seccomp session ssl tcpd threads unicode x86 xv xvid zlib" ABI_X86="32" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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 author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext" CURL_SSL="gnutls" 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="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de en_GB" LIRC_DEVICES="serial" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby20 ruby21" SANE_BACKENDS="snapscan" USERLAND="GNU" VIDEO_CARDS="geode" 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: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, MAKEOPTS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Note that I was asked to submit individual bugs for each preserved_libs entry by Zac Medico in Bug 562344
