When updating glibc from 2.3.6-r4 to 2.4-r3, the following build error occurs: checking for sed... sed checking version of sed... 4.1.4, ok checking for autoconf... autoconf checking whether autoconf works... yes configure: error: *** These critical programs are missing or too old: gcc *** Check the INSTALL file for required versions. !!! ERROR: sys-libs/glibc-2.4-r3 failed. Call stack: ebuild.sh, line 1539: Called dyn_compile ebuild.sh, line 939: Called src_compile glibc-2.4-r3.ebuild, line 1179: Called toolchain-glibc_src_compile glibc-2.4-r3.ebuild, line 251: Called glibc_do_configure 'nptl' glibc-2.4-r3.ebuild, line 941: Called die GCC was updated prior to this, here is emerge --info: amnesix ~ # emerge --info Portage 2.1-r2 (default-linux/x86/2006.0, gcc-3.3.6, glibc-2.3.6-r4, 2.6.11-gentoo-r9-amnesix i686) ================================================================= System uname: 2.6.11-gentoo-r9-amnesix i686 Intel(R) Pentium(R) 4 CPU 2.80GHz Gentoo Base System version 1.12.4 distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] app-admin/eselect-compiler: [Not Present] dev-lang/python: 2.3.5-r2, 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r3 sys-devel/gcc-config: 1.3.13-r3 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r5 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O3 -march=pentium4 -fomit-frame-pointer -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb /var/bind" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-O3 -march=pentium4 -fomit-frame-pointer -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distcc distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" MAKEOPTS="-j6" 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'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X alsa apache2 apm arts avi berkdb bitmap-fonts bzip2 cli crypt cups dlloader dri eds emboss encode esd foomaticdb fortran ftp gd gdbm gif gnome gpm gstreamer gtk gtk2 hardened hardenedpp imap imlib innodb isdnlog jpeg kde libg++ libww libwww mad maildir mikmod mime ming motif mp3 mpeg mysql ncurses nls nptl nptlonly ogg opengl openntpd oss pam pcre pdflib perl php png posix pppd python qt3 qt4 quicktime readline reflection sasl sdl session sharedmem simplexml sockets spell spl ssl tcpd tiff truetype truetype-fonts type1-fonts udev vda vorbis x86 xml xmms xorg xv zlib elibc_glibc input_devices_keyboard input_devices_mouse input_devices_evdev kernel_linux userland_GNU video_cards_apm video_cards_ark video_cards_ati video_cards_chips video_cards_cirrus video_cards_cyrix video_cards_dummy video_cards_fbdev video_cards_glint video_cards_i128 video_cards_i740 video_cards_i810 video_cards_imstt video_cards_mga video_cards_neomagic video_cards_nsc video_cards_nv video_cards_rendition video_cards_s3 video_cards_s3virge video_cards_savage video_cards_siliconmotion video_cards_sis video_cards_sisusb video_cards_tdfx video_cards_tga video_cards_trident video_cards_tseng video_cards_v4l video_cards_vesa video_cards_vga video_cards_via video_cards_vmware video_cards_voodoo" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
(In reply to comment #0) > GCC was updated prior to this, here is emerge --info: No, it wasn't: > Portage 2.1-r2 (default-linux/x86/2006.0, gcc-3.3.6, glibc-2.3.6-r4, It won't get switched automagically, see http://www.gentoo.org/doc/en/gcc-upgrading.xml