>>> Emerging (15 of 149) app-emacs/ecb-2.41_pre20140215-r1::gentoo * ecb-2.41_pre20140215.tar.xz SHA256 SHA512 WHIRLPOOL size ;-) ... [ ok ] * Emacs version: 24.3.1 >>> Unpacking source... >>> Unpacking ecb-2.41_pre20140215.tar.xz to /var/tmp/portage/app-emacs/ecb-2.41_pre20140215-r1/work >>> Source unpacked in /var/tmp/portage/app-emacs/ecb-2.41_pre20140215-r1/work >>> Preparing source in /var/tmp/portage/app-emacs/ecb-2.41_pre20140215-r1/work/ecb-2.41 ... * Applying ecb-2.32-gentoo.patch ... [ ok ] >>> Source prepared. >>> Configuring source in /var/tmp/portage/app-emacs/ecb-2.41_pre20140215-r1/work/ecb-2.41 ... >>> Source configured. >>> Compiling source in /var/tmp/portage/app-emacs/ecb-2.41_pre20140215-r1/work/ecb-2.41 ... make -j8 LOADPATH= Makefile:38: Makefile.conf not found. Using defaults for Linux! Makefile:39: Create Makefile.conf from Makefile.conf.template to override the defaults. Byte-compiling ECB with LOADPATH= ... Generating info-format... emacs -batch -no-site-file -l ecb-compile-script --eval '(ecb-byte-compile t)' Autoloading failed to define function semantic-mode Makefile:73: recipe for target 'ecb' failed make: *** [ecb] Error 255 make: *** Waiting for unfinished jobs.... Generating html-format... * ERROR: app-emacs/ecb-2.41_pre20140215-r1::gentoo failed (compile phase): * emake failed Reproducible: Always Steps to Reproduce: 1. emerge -v ecb Portage 2.2.14 (python 2.7.7-final-0, default/linux/amd64/13.0/desktop, gcc-4.8.3, glibc-2.19-r1, 3.16.5-gentoo x86_64) ================================================================= System uname: Linux-3.16.5-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_950_@_3.07GHz-with-gentoo-2.2 KiB Mem: 12328340 total, 5164684 free KiB Swap: 1228936 total, 1228936 free Timestamp of tree: Thu, 11 Dec 2014 16:15:01 +0000 ld GNU ld (Gentoo 2.24 p1.4) 2.24 distcc 3.1 x86_64-pc-linux-gnu [disabled] app-shells/bash: 4.2_p53 dev-java/java-config: 2.2.0 dev-lang/perl: 5.18.2-r2 dev-lang/python: 2.7.7, 3.2.5-r6, 3.3.5-r1, 3.4.1 dev-util/cmake: 2.8.12.2-r1 dev-util/pkgconfig: 0.28-r1 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.12.4 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.69 sys-devel/automake: 1.11.6, 1.13.4 sys-devel/binutils: 2.24-r3 sys-devel/gcc: 4.8.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2-r1 sys-devel/make: 4.0-r1 sys-kernel/linux-headers: 3.16 (virtual/os-headers) sys-libs/glibc: 2.19-r1 Repositories: gentoo trents_overlay Installed sets: @system ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA @FSF-APPROVED dlj-1.1 AdobeFlash-11.x Oracle-BCLA-JavaSE skype-4.0.0.7-copyright FraunhoferFDK" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.0/conf /var/qmail/alias /var/qmail/control" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo" LANG="de_DE.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-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="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 berkdb branding bzip2 cairo cdda cdr cjk cli consolekit cracklib crypt cups cxx dbus doc dri dts dvb dvd dvdr dvdread emacs emboss encode exif fam firefox flac fortran gdbm gif glamor gnome gpm gtk iconv immqt-bc ipv6 jpeg kde lcms libnotify mad mmx mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds qt3support qt4 readline sdl semantic-desktop session spell sse sse2 ssl startup-notification svg tcpd tetex tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xcb xml xv xvid zlib" ABI_X86="64" 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" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd 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 author" 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 ublox ubx" GRUB_PLATFORMS="pc qemu" INPUT_DEVICES="evdev keyboard mouse wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de" LIRC_DEVICES="devinput" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" QEMU_SOFTMMU_TARGETS="x86_64" QEMU_USER_TARGETS="x86_64" RUBY_TARGETS="ruby19 ruby20" SANE_BACKENDS="epson2 net" USERLAND="GNU" VIDEO_CARDS="radeon" 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" USE_PYTHON="2.7 3.2 3.4" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Is app-emacs/cedet installed on your system (which version)? If yes, please unmerge it, then try to emerge ecb again.
Yep, cedet-1.1 was installed. Without it, ecb-2.41_pre20140215-r1 emerges just fine.
The ebuild now blocks against app-emacs/cedet. Thank you for reporting.