emerge安装软件时出现的错误：

setlocale: unsupported locale setting

!!! SYNC setting found in make.conf.

    This setting is Deprecated and no longer used.  Please ensure your 'sync-type' and 'sync-uri' are set correctly in /etc/portage/repos.conf/gentoo.conf

setlocale: unsupported locale setting

 * IMPORTANT: 1 news items need reading for repository 'gentoo'.

 * Use eselect news read to view new items.

 * IMPORTANT: 5 config files in '/etc/portage' need updating.

 * See the CONFIGURATION FILES section of the emerge

 * man page to learn how to update config files.

解决方法：

etc-update