When compiling media-libs/sdl-mixer-1.2.12-r1 emerge fails due to unmet USE requirements Reproducible: Always Steps to Reproduce: 1.emerge --update --newuse --deep --keep-going --autounmask-write @world 2. 3. Actual Results: Calculating dependencies... done! !!! The ebuild selected to satisfy "media-libs/sdl-mixer" has unmet requirements. - media-libs/sdl-mixer-1.2.12-r1::gentoo USE="mp3 vorbis wav -flac -fluidsynth -mad -midi -mikmod -mod -modplug -playtools -smpeg -static-libs -timidity" The following REQUIRED_USE flag constraints are unsatisfied: mp3? ( any-of ( smpeg mad ) ) The above constraints are a subset of the following complete expression: midi? ( any-of ( timidity fluidsynth ) ) timidity? ( midi ) fluidsynth? ( midi ) mp3? ( any-of ( smpeg mad ) ) smpeg? ( mp3 ) mad? ( mp3 ) mod? ( any-of ( mikmod modplug ) ) mikmod? ( mod ) modplug? ( mod ) (dependency required by "media-tv/xbmc-11.0" [installed]) (dependency required by "@selected" [set]) (dependency required by "@world" [argument]) Expected Results: emerge would complete successfully TitanGentoo2 ~ # emerge --info Portage 2.1.10.56 (default/linux/amd64/10.0/no-multilib, gcc-4.5.3, glibc-2.14.1-r3, 3.3.1-gentoo x86_64) ================================================================= System uname: Linux-3.3.1-gentoo-x86_64-AMD_Phenom-tm-_II_X6_1055T_Processor-with-gentoo-2.1 Timestamp of tree: Thu, 19 Apr 2012 03:30:01 +0000 ccache version 3.1.7 [enabled] app-shells/bash: 4.2_p24 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.3, 3.2.2-r1 dev-util/ccache: 3.1.7 dev-util/cmake: 2.8.7-r5 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.1 sys-apps/openrc: 0.9.9.3 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.11.5 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.5.3-r2 sys-devel/gcc-config: 1.7 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 3.3 (virtual/os-headers) sys-libs/glibc: 2.14.1-r3 Repositories: gentoo ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=amdfam10 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=amdfam10 -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--quiet-build=n" FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="nl en" MAKEOPTS="-j7" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acl acpi alsa amd64 berkdb bluray branding bzip2 cairo cdda cli consolekit cracklib crypt cups cxx dbus declarative device-mapper dri exif fat fortran gallium gdbm gif gnome gphoto2 gpm gstreamer gtk gtk3 iconv icu ipv6 java jpeg kde mmx mng modules mp3 mudflap ncurses nls nptl nptlonly nvidia ogg opengl openmp pam pcre pdf png policykit pppd python qt3support qt4 readline semantic-desktop session sql sse sse2 ssl startup-notification svg sysfs tcpd threads tiff truetype udev unicode vorbis webkit wmf xcomposite xml xorg 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 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 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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" 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 ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="nl en" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nouveau nvidia vesa" 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: CPPFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
*** This bug has been marked as a duplicate of bug 403207 ***
It doesn't seem like an exact duplicate to me. The problem here appears to be that either smpeg of mad has to be enabled in order to proceed (both were unset) and portage cannot (and should not) judge which one I want. So I suggest you either reopen this bug or reformulate the other bug.