media-libs/freeglut will not compile if x11-libs/libX11 is not installed, but does not appear to list it as a dependency. As a result, if both are missing when 'emerge -vuD world' is invoked, it may try to install media-libs/freeglut before x11-libs/libX11, causing the emerge to fail. Reproducible: Always
'emerge --info' would be useful. Though freeglut doesn't have such dep, mesa does, so something smells fishy here anyway.
Apologies for the --info omission. Here it is: Portage 2.1.6.13 (default/linux/x86/10.0/desktop, gcc-4.3.4, glibc-2.11-r1, 2.6.32-gentoo-r1 i686) ================================================================= System uname: Linux-2.6.32-gentoo-r1-i686-AMD_Athlon-TM-_XP_2400+-with-gentoo-1.12.13 Timestamp of tree: Thu, 14 Jan 2010 06:45:01 +0000 distcc 3.1 i686-pc-linux-gnu [enabled] app-shells/bash: 4.0_p35 dev-java/java-config: 2.1.9-r2 dev-lang/python: 2.6.4, 3.1.1-r1 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.9.6-r2, 1.10.2, 1.11.1 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=athlon-xp -mtune=athlon-xp -mfpmath=sse -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=athlon-xp -mtune=athlon-xp -mfpmath=sse -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distcc distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://gentoo.chem.wisc.edu/gentoo http://www.gtlib.gatech.edu/pub/gentoo ftp://mirror.iawnet.sandia.gov/pub/gentoo http://gentoo.cites.uiuc.edu/pub/gentoo http://gentoo.osuosl.org ftp://mirrors.rit.edu/gentoo http://mirrors.cs.wmich.edu/gentoo http://mirror.mcs.anl.gov/pub/gentoo" LDFLAGS="-Wl,-O1" MAKEOPTS="-j13" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage/layman/perl-experimental" SYNC="rsync://rsync21.us.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi aim alsa apm audacious audiofile bash-completion berkdb bidi branding bzip2 cairo cdda cddb cdparanoia cdr cdrom cli consolekit cracklib crypt cups curl cxx dbus dirac dri dts dvd dvdr emboss encode esd evo exif ffmpeg firefox flac fltk fortran gadu gcj gd gdbm gif gpg gpm grub gstreamer gtk gtk2-perl hal iconv id3tag imagemagick ipv6 ithreads jabber java jfs jpeg jpeg2k kde ldap libnotify live loop-aes mad matroska md5sum mikmod mmx mng modules mp3 mp4 mpeg mudflap mysql ncurses netpbm nls nptl nptlonly nsplugin offensive ogg ogg123 opengl openmp pam pcre pdf perl pidgin png ppds pppd python qt3 qt3support qt4 quicktime readline reflection schroedinger sdl sdl-image session silc skins sox speex spell spl sql sse ssh ssl startup-notification stream svg sysfs t1lib tcpd tga theora threads thunar tiff tk tools truetype twolame unicode usb utils v4l v4l2 vlm vorbis win32codecs x264 x86 xanim xface xfs xft xml xorg xorgmodule xpm xscreensaver xulrunner xv xvid zlib" 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" 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 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" ELIBC="glibc" INPUT_DEVICES="evdev keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="mga vesa vga" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Further note: I realize under normal circumstances this build order would be very unlikely. I ran into it because I had a lot of breakage because a copy-and-paste error left me with ACCEPT_KEYWORDS="~x86" in my /etc/make.conf and a non-working X installation, and it turned out when deleting all the unstable packages and reinstalling stable versions that freeglut got rebuilt before libX11 had been reinstalled.
*** This bug has been marked as a duplicate of bug 298337 ***
