gentoo 安装GNOME 时出现这样提示。

mybox conf.d # time emerge gnome
Calculating dependencies... done!

emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/cairo-1.6[X]".
!!! One of the following packages is required to complete your request:
- x11-libs/cairo-1.8.8 (Change USE: +X)
(dependency required by "x11-libs/gtk+-2.16.6" [ebuild])
(dependency required by "gnome-base/gnome-mount-0.8" [ebuild])
(dependency required by "gnome-base/gnome-volume-manager-2.24.1" [ebuild])
(dependency required by "gnome-base/gnome-2.24.1" [ebuild])
(dependency required by "gnome" [argument])


real 0m11.236s
user 0m10.767s
sys 0m0.434s

我根据提示安装 结果出现以下问题。
mybox conf.d # emerge -vp x11-libs/cairo

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild N ] media-libs/libpng-1.2.38 0 kB
[ebuild N ] x11-misc/util-macros-1.3.0 51 kB
[ebuild N ] x11-libs/pixman-0.16.0 USE="(-altivec) -debug -mmx -sse2" 394 kB
[ebuild N ] media-libs/fontconfig-2.6.0-r2 USE="-doc" 1,371 kB
[ebuild N ] app-admin/eselect-fontconfig-1.0 0 kB
[ebuild N ] x11-libs/cairo-1.8.8 USE="svg -X -cleartype -debug -directfb -doc -glitz -opengl -xcb" 6,491 kB

Total: 6 packages (6 new), Size of downloads: 8,305 kB

vi /etc/portage/package.use
add:
x11-libs/cairo X

是因为安装上述软件包需要cairo启用X这个USE标记

如何启动这个USE标记呢？我是新手。谢谢。

看第3贴就知道了

把你的Profile改成Desktop，你会少遇到很多这种问题的。