"emerge glibc" always fails with: /var/tmp/portage/sys-libs/glibc-2.6.1/work/build-x86-x86_64-pc-linux-gnu-nptl/libc_pic.os: In function `__fork': (.text+0x78e6f): undefined reference to `__sync_bool_compare_and_swap_4' /var/tmp/portage/sys-libs/glibc-2.6.1/work/build-x86-x86_64-pc-linux-gnu-nptl/libc_pic.os: In function `nscd_getpw_r': Reproducible: Always Steps to Reproduce: 1. emerge glibc Actual Results: emerging breaks with: /var/tmp/portage/sys-libs/glibc-2.6.1/work/build-x86-x86_64-pc-linux-gnu-nptl/libc_pic.os: In function `__fork': (.text+0x78e6f): undefined reference to `__sync_bool_compare_and_swap_4' /var/tmp/portage/sys-libs/glibc-2.6.1/work/build-x86-x86_64-pc-linux-gnu-nptl/libc_pic.os: In function `nscd_getpw_r': the same problem reported as, http://unixadmintalk.com/f71/glibc-2-6-1-emerge-error-511366/ Expected Results: emerge glibc finishes successfully sys-libs/glibc-2.6.1.ebuild has EMULTILIB="true" hard coded, and doesn't honor USE="-multilib". manually setting EMULILIB="false" fixes the problem, and glibc builds successfully. I got the same problem on all my amd64 machines. following is "emerge --info " from one, # emerge --info Portage 2.1.3.19 (default-linux/amd64/2007.0, gcc-4.2.2/amd64-vanilla, glibc-2.6.1-r0, 2.6.22-gentoo-r10 x86_64) ================================================================= System uname: 2.6.22-gentoo-r10 x86_64 Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz Timestamp of tree: Sat, 17 Nov 2007 16:57:01 +0000 app-admin/eselect-compiler: 2.0.0_rc2-r1 app-shells/bash: 3.2_p17 dev-java/java-config: 1.3.7, 2.0.33-r1 dev-lang/python: 2.5.1-r3 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.10-r5 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 2.0.0_rc1 sys-devel/libtool: 1.5.24 virtual/os-headers: 2.6.22-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=nocona -fomit-frame-pointer " CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.ussg.iu.edu/pub/linux/gentoo http://mirror.datapipe.net/gentoo ftp://mirror.datapipe.net/gentoo ftp://gentoo.mirrors.tds.net/gentoo http://64.50.236.52/ http://gentoo.mirrors.tds.net/gentoo" LANG="en_US.UTF-8" LINGUAS="en zh zh_CN zh_TW" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/portage/cross-i686-pc-linux-gnu /usr/portage/local/layman/je_fro /usr/portage/local/layman/voip" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acl acpi aiglx alsa amd64 bash-completion berkdb bitmap-fonts cairo cjk cli cracklib crypt cups dbus dri dvdread encode esd fftw firefox foomaticdb fortran gdbm glitz gnome gnutls gpm gstreamer gtk hal hdaps iconv immqt-bc ipv6 isdnlog jpeg lcms led midi mmx mng motif mpeg mudflap mysql ncurses newspr nls nptl nptlonly nsplugin opengl openmp pam pcre pdf perl png pppd pulseaudio python quicktime readline reflection scanner session smp spell spl sse sse2 ssl svg symlink tcpd tetex tiff truetype truetype-fonts type1-fonts unicode userlocales v4l v4l2 vorbis wmf xcomposite xinerama xml xorg xv zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel 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 mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en zh zh_CN zh_TW" USERLAND="GNU" VIDEO_CARDS="v4l vesa apm fglrx avivo radeonhd" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
*** This bug has been marked as a duplicate of bug 185404 ***
> sys-devel/gcc-config: 2.0.0_rc1 Ugh... Downgrade immediately and unmerge eselect-compiler as well.
