After upgrading to glibc-2.3.4.20041006 from 2.3.4.20040808-r1, I noticed that some libs linked againse libpthread were having unresolved symbols issues: /usr/qt/3/lib/libqt-mt.so: undefined reference to `__pthread_register_cancel@GLIBC_2.3.3' /usr/qt/3/lib/libqt-mt.so: undefined reference to `__pthread_unregister_cancel@GLIBC_2.3.3' $ ldd /usr/qt/3/lib/libqt-mt.so ... libpthread.so.0 => /lib/tls/libpthread.so.0 (0x4072e000) ... Portage 2.0.51_rc9 (default-linux/x86/2004.3, gcc-3.4.2, glibc-2.3.4.20041006-r0, 2.6.8-gentoo-r8 i686) ================================================================= System uname: 2.6.8-gentoo-r8 i686 AMD Athlon(tm) 64 Processor 2800+ Gentoo Base System version 1.5.3 distcc 2.17 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.3 [enabled] Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.15.92.0.2-r1 Headers: sys-kernel/linux26-headers-2.6.8.1-r1 Libtools: sys-devel/libtool-1.5.2-r5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CFLAGS="-march=i686 -O2 -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.3/share/config:/usr/kde/3.3/env:/usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=i686 -O2 -pipe -fomit-frame-pointer" DISTDIR="/mnt/raid0/gentoo/distfiles" FEATURES="autoaddcvs ccache cvs distlocks fixpackages sandbox sfperms sign userpriv usersandbox" GENTOO_MIRRORS="http://gentoo.osuosl.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/mnt/raid0/gentoo/packages-i686" PORTAGE_TMPDIR="/mnt/raid0/tmp/g32" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/mnt/raid0/gentoo/gentoo-x86" SYNC="rsync://192.168.0.1/gentoo-portage" USE="3dnow 3ds S3TC X X509 Xaw3d aac aalib accessibility acl acpi aim alsa amd apache2 apm ardour-ksi arts artswrappersuid atlas audiofile autofs avantgo avi bcmath berkdb bidi bindist bitmap-fonts bzlib calendar caps cdparanoia cdr chroot clamav clanJavaScript clanVoice clearpasswd clisp cmucl cpdflib crypt cscope ctype cups curl curlwrappers dba dbase dbcp dbm dbx dedicated dga dio directfb divx4linux dmx dnd doc dv dvd dvdr dvdread edl eim emacs emacs-w3 encode esd ethereal evms2 evo exif expat ext-png ext-zlib f77 faac faad fam fax fbcon fbdev ffmpeg filepro flac flash flatfile fltk fluidsynth foomaticdb freetype fs ftp fullrpc gb gcj gcl gd gd-external gdbm ggi gif gimp gimpprint glade glut gmp gmtfull gmthigh gmtsuppl gmttria gnome gnomedb gnuplot gphoto2 gpm gps gstreamer gtk gtk2 gtkhtml guile hbci iconv icq idl image imagemagick imap imlib imlib2 innodb ipalias ipv6 jabber jack jack-caps java javacomm javamail javascript jbig jikes joystick jp2 jpeg js junit justify kde ladcca lcd lcms libcaca libdsk libg libg++ libgda libwww lids lirc live lmtp log4j ltsp lua lucid lzo lzw lzw-tiff mad maildir make-busybox-symlinks mcal md5sum menu mhash mikmod mime mixer mmx mng mnogosearch mono motif mozcalendar mozctl mozilla mozinterfaceinfo mozp3p mozsvg mozxmlterm mpeg mpeg4 mpi mplayer msession msn mule multilib music mysql mysqli mythtv nas native ncurses neXt network nis nls nptl nvidia nviz oav objc odbc offensive ofx oggvorbis oldworld openal opengl oscar oss pam parse-clocks passfile pcap pcmcia pcntl pcre pda pdflib perl php pic pie plotutils png pnp portaudio posix postgres ppds prelude propolice psyco python qhull qt quicktime readline regexp rplay rtc ruby samba sasl sdk sdl session sharedmem simplexml skey slang slp sndfile soap sockets socks5 sox speex spell spl sqlite src sse ssl svg svga sysvipc tcltk tcpd tetex tga theora tidy tiff timidity tokenizer transcode transparent-proxy truetype trusted type1 ucs2 usb v4l v4l2 vda vhosts videos vim-with-x virus-scan wddx wifi wmf wsconvert wxwin wxwindows x86 xchattext xemacs xface xforms xfs xine xinerama xml xml2 xmlrpc xmms xosd xpm xprint xsl xv xvid yahoo zeo zlib"
You can take a look at bug #67166
*** This bug has been marked as a duplicate of 67166 ***
