Erro Portage

sabayon-pc ~ # emerge -s clementine

[ Results for search key : clementine ]
Searching...

* media-sound/clementine
Latest version available: 1.3_rc1-r1
Latest version installed: [ Not Installed ]
Size of files: 8.279 KiB
Homepage: http://www.clementine-player.org https://github.com/clementine-player/Clementine
Description: A modern music player and library organizer based on Amarok 1.4 and Qt4
License: GPL-3

[ Applications found : 1 ]

sabayon-pc ~ # emerge -av clementine

* IMPORTANT: 19 news items need reading for repository 'gentoo'.
* Use eselect news read to view new items.


These are the packages that would be merged, in order:

Calculating dependencies ... done!
[ebuild N ] app-admin/killproc-2.13-r1::gentoo 38 KiB
[ebuild N ] sys-apps/sg3_utils-1.42::gentoo USE="-static-libs" 1.191 KiB
[ebuild N ] sys-apps/rescan-scsi-bus-1.57-r1::gentoo 23 KiB
[ebuild N ] dev-lang/swig-3.0.8::gentoo USE="pcre -ccache -doc" 7.752 KiB
[ebuild N ] media-libs/mutagen-1.31::gentoo USE="-doc {-test}" PYTHON_TARGETS="python2_7 python3_4 -python3_3" 877 KiB
[ebuild N ] media-libs/libmtp-1.1.11:0/9::gentoo USE="crypt -doc -examples -static-libs" 771 KiB
[ebuild N ] dev-cpp/gtest-1.7.0-r1::gentoo USE="-examples -static-libs" ABI_X86="32 (64) (-x32)" 1.137 KiB
[ebuild N ] dev-cpp/gmock-1.7.0-r1::gentoo USE="-static-libs {-test}" ABI_X86="32 (64) (-x32)" 2.117 KiB
[ebuild N ] media-libs/libgpod-0.8.3-r1::sabayon USE="gtk ios python udev -mono -static-libs" PYTHON_TARGETS="python2_7" 784 KiB
[ebuild N ] dev-libs/qjson-0.8.1-r1::gentoo USE="-debug -doc {-test}" ABI_X86="32 (64) (-x32)" 63 KiB
[ebuild NS ] dev-qt/qttest-4.8.7:4::gentoo [5.5.1:5::gentoo] USE="exceptions (-aqua) -debug -pch" ABI_X86="32 (64) (-x32)" 235.426 KiB
[ebuild N ] media-libs/liblastfm-1.0.9::gentoo USE="qt4 -fingerprint -qt5 {-test}" 117 KiB
[ebuild N ] media-libs/libechonest-2.3.1:0/2.3::gentoo USE="qt4 -qt5" 86 KiB
[ebuild N ] media-libs/libmygpo-qt-1.0.8::gentoo USE="{-test}" 64 KiB
[ebuild NS ] dev-qt/qtopengl-4.8.7:4::gentoo [5.5.1:5::gentoo] USE="exceptions qt3support (-aqua) -debug -egl -pch" ABI_X86="32 (64) (-x32)" 0 KiB
[ebuild N ] media-libs/chromaprint-1.3.1:0/1::gentoo USE="libav tools {-test}" ABI_X86="32 (64) (-x32)" 526 KiB
[ebuild N ] media-sound/clementine-1.3_rc1-r1::gentoo USE="cdda dbus ipod lastfm moodbar mtp udisks -box -debug -dropbox -googledrive -mms -projectm -skydrive {-test} -ubuntu-one -wiimote" LINGUAS="en_GB pt pt_BR -af -ar -be -bg -bn -br -bs -ca -cs -cy -da -de -el -en_CA -eo -es -et -eu -fa -fi -fr -ga -gl -he -he_IL -hi -hr -hu -hy -ia -id -is -it -ja -ka -kk -ko -lt -lv -mr -ms -my -nb -nl -oc -pa -pl -ro -ru -si_LK -sk -sl -sr -sr@latin -sv -te -tr -tr_TR -uk -uz -vi -zh_CN -zh_TW" 8.279 KiB

Total: 17 packages (15 new, 2 in new slots), Size of downloads: 259.244 KiB

Would you like to merge these packages? [Yes/No] yes

>>> Verifying ebuild manifests

>>> Emerging (1 of 17) app-admin/killproc-2.13-r1::gentoo
* Fetching files in the background.
* To view fetch progress, run in another terminal:
* tail -f /var/log/emerge-fetch.log
* killproc-2.13.tar.gz SHA256 SHA512 WHIRLPOOL size ;-) ... [ ok ]
>>> Unpacking source...
>>> Unpacking killproc-2.13.tar.gz to /var/tmp/portage/app-admin/killproc-2.13-r1/work
>>> Source unpacked in /var/tmp/portage/app-admin/killproc-2.13-r1/work
>>> Preparing source in /var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13 ...
* Applying killproc-2.13-makefile.patch ... [ ok ]
* Applying killproc-2.13-argz.patch ... [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13 ...
make -j3 -s
gcc-config: error: could not run/locate 'x86_64-pc-linux-gnu-gcc'
gcc-config: error: could not run/locate 'x86_64-pc-linux-gnu-gcc'
Makefile:60: recipe for target 'libinit.o' failed
make: *** [libinit.o] Error 1
make: *** Waiting for unfinished jobs....
Makefile:75: recipe for target 'fsync' failed
make: *** [fsync] Error 1
gcc-config: error: could not run/locate 'x86_64-pc-linux-gnu-gcc'
Makefile:72: recipe for target 'usleep' failed
make: *** [usleep] Error 1
* ERROR: app-admin/killproc-2.13-r1::gentoo failed (compile phase):
* emake failed
*
* If you need support, post the output of `emerge --info '=app-admin/killproc-2.13-r1::gentoo'`,
* the complete build log and the output of `emerge -pqv '=app-admin/killproc-2.13-r1::gentoo'`.
* The complete build log is located at '/var/tmp/portage/app-admin/killproc-2.13-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/app-admin/killproc-2.13-r1/temp/environment'.
* Working directory: '/var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13'
* S: '/var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13'

>>> Failed to emerge app-admin/killproc-2.13-r1, Log file:

>>> '/var/tmp/portage/app-admin/killproc-2.13-r1/temp/build.log'

* Messages for package app-admin/killproc-2.13-r1:

* ERROR: app-admin/killproc-2.13-r1::gentoo failed (compile phase):
* emake failed
*
* If you need support, post the output of `emerge --info '=app-admin/killproc-2.13-r1::gentoo'`,
* the complete build log and the output of `emerge -pqv '=app-admin/killproc-2.13-r1::gentoo'`.
* The complete build log is located at '/var/tmp/portage/app-admin/killproc-2.13-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/app-admin/killproc-2.13-r1/temp/environment'.
* Working directory: '/var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13'
* S: '/var/tmp/portage/app-admin/killproc-2.13-r1/work/killproc-2.13'

Se os amigos poderem me ajudar a descobrir porque não consigo instalar nenhum pacote pelo Portage, vou agradecer muito e se precisarem de mais informações, estou a disposição.