>>> Unpacking source...
>>> Unpacking quassel-0.5.2.tar.bz2 to /var/tmp/portage/net-irc/quassel-0.5.2/work
>>> Source unpacked in /var/tmp/portage/net-irc/quassel-0.5.2/work
>>> Preparing source in /var/tmp/portage/net-irc/quassel-0.5.2/work/quassel-0.5.2 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-irc/quassel-0.5.2/work/quassel-0.5.2 ...
>>> Working in BUILD_DIR: "/var/tmp/portage/net-irc/quassel-0.5.2/work/quassel-0.5.2_build"
cmake -C /var/tmp/portage/net-irc/quassel-0.5.2/temp/gentoo_common_config.cmake -DCMAKE_INSTALL_PREFIX=/usr -DWANT_QTCLIENT=OFF -DWANT_CORE=ON -DWANT_MONO=OFF -DWITH_WEBKIT=OFF -DWITH_PHONON=OFF -DWITH_KDE=OFF -DWITH_DBUS=ON -DWITH_OPENSSL=ON -DWITH_OXYGEN=OFF -DWITH_LIBINDICATE=OFF -DEMBED_DATA=OFF -DLINGUAS=fi, -DCMAKE_BUILD_TYPE=Gentoo -DCMAKE_INSTALL_DO_STRIP=OFF -DCMAKE_USER_MAKE_RULES_OVERRIDE=/var/tmp/portage/net-irc/quassel-0.5.2/temp/gentoo_rules.cmake /var/tmp/portage/net-irc/quassel-0.5.2/work/quassel-0.5.2
loading initial cache file /var/tmp/portage/net-irc/quassel-0.5.2/temp/gentoo_common_config.cmake
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/lib/ccache/bin/i486-pc-linux-gnu-gcc
-- Check for working C compiler: /usr/lib/ccache/bin/i486-pc-linux-gnu-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/lib/ccache/bin/i486-pc-linux-gnu-g++
-- Check for working CXX compiler: /usr/lib/ccache/bin/i486-pc-linux-gnu-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found execinfo (built-in)
-- Looking for Q_WS_X11
-- Looking for Q_WS_X11 - found
-- Looking for Q_WS_WIN
-- Looking for Q_WS_WIN - not found.
-- Looking for Q_WS_QWS
-- Looking for Q_WS_QWS - not found.
-- Looking for Q_WS_MAC
-- Looking for Q_WS_MAC - not found.
-- Found Qt-Version 4.5.3 (using /usr/bin/qmake)
CMake Error at /usr/share/cmake/Modules/FindX11.cmake:362 (MESSAGE):
  Could not find X11
Call Stack (most recent call first):
  cmake/modules/Qt4ConfigDependentSettings.cmake:30 (FIND_PACKAGE)
  cmake/modules/FindQt4.cmake:1158 (INCLUDE)
  CMakeLists.txt:153 (find_package)


-- Configuring incomplete, errors occurred!
 * 
 * ERROR: net-irc/quassel-0.5.2 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_configure
 *             environment, line 2890:  Called cmake-utils_src_configure
 *             environment, line  684:  Called _execute_optionaly 'src_configure'
 *             environment, line  175:  Called enable_cmake-utils_src_configure
 *             environment, line 1091:  Called die
 * The specific snippet of code:
 *       cmake "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed";
 *  The die message:
 *   cmake failed
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/net-irc/quassel-0.5.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-irc/quassel-0.5.2/temp/environment'.
 *