[求助]emerge kstartupconfig4出现错误~~~

Mie

>>> Unpacking source...
* Unpacking parts of kdebase-workspace-4.2.1.tar.bz2 to /var/tmp/portage/kde-base/kstartupconfig-4.2.1/work ...
  [ ok ]
>>> Source unpacked in /var/tmp/portage/kde-base/kstartupconfig-4.2.1/work
>>> Configuring source in /var/tmp/portage/kde-base/kstartupconfig-4.2.1/work/kstartupconfig-4.2.1 ...
cmake: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory
*
* ERROR: kde-base/kstartupconfig-4.2.1 failed.
* Call stack:
*               ebuild.sh, line   49:  Called src_configure
*             environment, line 3749:  Called kde4-meta_src_configure
*             environment, line 2887:  Called kde4-base_src_configure
*             environment, line 2645:  Called cmake-utils_src_configure
*             environment, line  945:  Called cmake-utils_src_configureout
*             environment, line  964:  Called die
* The specific snippet of code:
*       cmake -C "${TMPDIR}/gentoo_common_config.cmake" ${cmakeargs} "${S}" || 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/kde-base/kstartupconfig-4.2.1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/kde-base/kstartupconfig-4.2.1/temp/environment'.
*


遇到这种类型的问题要怎么解决呢??谢谢