安装kde失败

[omnislash]

我安装了20006.0版的Gentoo，在emerge kde的过程中，media-libs/jpeg-6b-r7编译失败了，下面是部分提示信息：

……
/usr/bin/libtool: line 5966: i386-pc-linux-gnu-ar: command not found
make: *** [libjpeg.la] Error 127

!!!ERROR media-libs/jpeg-6b-r7 failed.
Call stack:
ebuild.sh, line 1539: Called dyn_compile
ebuild.sh, line 939: Called src_compile
jpeg-6b-r7.ebuild, line 34: Called die

!!! make failed
!!! If you need support, post the topost build error, and the call stack if relevant.

请问有没有哪位朋友遇到过这个问题？该如何解决？谢谢！