cd /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/test && /usr/bin/cmake -E cmake_link_script CMakeFiles/umfpack_support_2.dir/link.txt --verbose=1 /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fexceptions -fno-check-new -fno-common -fstrict-aliasing -Wno-variadic-macros -Wextra -pedantic -g2 -g0 -O2 -fno-inline-functions -Wl,-O1 -Wl,--as-needed CMakeFiles/umfpack_support_2.dir/umfpack_support.cpp.o -o umfpack_support_2 -rdynamic -lumfpack -lamd -lcolamd -leigen_blas /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.1/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -leigen_blas collect2: error: ld returned 1 exit status test/CMakeFiles/umfpack_support_2.dir/build.make:91: recipe for target 'test/umfpack_support_2' failed make[3]: *** [test/umfpack_support_2] Error 1 make[3]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' CMakeFiles/Makefile2:31790: recipe for target 'test/CMakeFiles/umfpack_support_2.dir/all' failed make[2]: *** [test/CMakeFiles/umfpack_support_2.dir/all] Error 2 make[2]: *** Waiting for unfinished jobs.... Linking CXX executable umfpack_support_1 cd /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/test && /usr/bin/cmake -E cmake_link_script CMakeFiles/umfpack_support_1.dir/link.txt --verbose=1 /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fexceptions -fno-check-new -fno-common -fstrict-aliasing -Wno-variadic-macros -Wextra -pedantic -g2 -g0 -O2 -fno-inline-functions -Wl,-O1 -Wl,--as-needed CMakeFiles/umfpack_support_1.dir/umfpack_support.cpp.o -o umfpack_support_1 -rdynamic -lumfpack -lamd -lcolamd -leigen_blas /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.1/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -leigen_blas collect2: error: ld returned 1 exit status test/CMakeFiles/umfpack_support_1.dir/build.make:91: recipe for target 'test/umfpack_support_1' failed make[3]: *** [test/umfpack_support_1] Error 1 make[3]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' CMakeFiles/Makefile2:31759: recipe for target 'test/CMakeFiles/umfpack_support_1.dir/all' failed make[2]: *** [test/CMakeFiles/umfpack_support_1.dir/all] Error 2 Linking CXX executable bicgstab_1 cd /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/test && /usr/bin/cmake -E cmake_link_script CMakeFiles/bicgstab_1.dir/link.txt --verbose=1 /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fexceptions -fno-check-new -fno-common -fstrict-aliasing -Wno-variadic-macros -Wextra -pedantic -g2 -g0 -O2 -fno-inline-functions -Wl,-O1 -Wl,--as-needed CMakeFiles/bicgstab_1.dir/bicgstab.cpp.o -o bicgstab_1 -rdynamic make[3]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' /usr/bin/cmake -E cmake_progress_report /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/CMakeFiles [ 89%] Built target bicgstab_1 Linking CXX executable bicgstab_2 cd /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/test && /usr/bin/cmake -E cmake_link_script CMakeFiles/bicgstab_2.dir/link.txt --verbose=1 /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fexceptions -fno-check-new -fno-common -fstrict-aliasing -Wno-variadic-macros -Wextra -pedantic -g2 -g0 -O2 -fno-inline-functions -Wl,-O1 -Wl,--as-needed CMakeFiles/bicgstab_2.dir/bicgstab.cpp.o -o bicgstab_2 -rdynamic make[3]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' /usr/bin/cmake -E cmake_progress_report /var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build/CMakeFiles 11 [ 89%] Built target bicgstab_2 make[2]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' CMakeFiles/Makefile2:1525: recipe for target 'CMakeFiles/buildtests.dir/rule' failed make[1]: *** [CMakeFiles/buildtests.dir/rule] Error 2 make[1]: Leaving directory '/var/tmp/portage/dev-cpp/eigen-3.1.3/work/eigen-3.1.3_build' Makefile:524: recipe for target 'buildtests' failed make: *** [buildtests] Error 2 * ERROR: dev-cpp/eigen-3.1.3::gentoo failed (test phase): * emake failed Portage 2.2.11-r1 (python 2.7.8-final-0, default/linux/amd64/13.0/desktop/kde, gcc-4.9.1, glibc-2.19-r1, 3.15.7-gentoo x86_64) ================================================================= System uname: Linux-3.15.7-gentoo-x86_64-AMD_Phenom-tm-_II_X4_965_Processor-with-gentoo-2.2 KiB Mem: 7918996 total, 2307972 free KiB Swap: 16777208 total, 16777188 free Timestamp of tree: Unknown ld GNU ld (Gentoo 2.24 p1.4) 2.24 app-shells/bash: 4.2_p47 dev-lang/python: 2.7.8, 3.3.5-r1, 3.4.1 dev-util/cmake: 2.8.12.2-r1 dev-util/pkgconfig: 0.28-r2 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: 1.14.1 sys-devel/binutils: 2.24-r3 sys-devel/gcc: 4.9.1 sys-devel/gcc-config: 1.8 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 x-overlay ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0 /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /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="-O2 -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms split-elog strict test unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j4" 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="/overlay" USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus declarative dri dts dvd dvdr egl emboss encode exif fam firefox flac fortran gdbm gif gpm gtk iconv ipv6 jpeg kde kipi lcms ldap libnotify mad mmx mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp openvg pam pango pcre pdf phonon plasma png policykit ppds python qt3support qt4 readline sdl semantic-desktop session spell sqlite sse sse2 ssl startup-notification svg tcl tcpd tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xa xcb xcomposite xinerama xml xscreensaver xv xvfb 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" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3 python3_4" RUBY_TARGETS="ruby21" USERLAND="GNU" VIDEO_CARDS="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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON
This failure only happens with FEATURES="test"
I can't reproduce. Please attach a proper build log.