安装cairo的问题

[zhangtbo]

1.我的fvwm无法显示墙纸.png文件，是要安装cairo吗？

2.在安装gnome时提示要安装cairo,是不是安装桌面系统都要安装这个cairo?

3.在安装cairo时出现如下提示:
>>> Original instance of package unmerged safely.

* You will most likely need to run revdep-rebuild after emerging this

>>> Regenerating /etc/ld.so.cache...
>>> x11-libs/cairo-1.2.4 merged.

>>> No packages selected for removal by clean.

>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.


* GNU info directory index is up-to-date.

大家帮我看看！谢谢！