emerge工具是怎样进行版本选择的？

shaaben

刚才做了emerge --sync后，运行emerge -av gentoo-sources，系统显示将要安装的版本是sys-kernel/gentoo-sources-2.6.15-r1，而我的portage/sys-kernel/gentoo-sources目录下有很多内核的ebuild文件。我想知道emerge是如何选择默认软件包版本的？

我diff了gentoo-sources-2.6.15-r1和gentoo-sources-2.6.15-r5，发现了以下：
13,14c13
< KEYWORDS="~alpha amd64 arm ppc ppc64 ~sparc x86"
<
---
> KEYWORDS="~alpha amd64 ~arm ~ia64 ~ppc ppc64 ~sparc ~x86"
我的机器是x86的，所以用的r1，如果是amd64，那就装r5了，是这样吗？这里的“~”代表“不装”吗？

kohno

http://www.gentoo.org/doc/zh_tw/handbook/handbook-x86.xml?part=3&chap=3

shaaben

了解了，谢谢。（问了一个低级问题，呵呵）

shaaben

接着上面的内容再问一个关于mask的问题吧。执行：
BakServer beep-media-player # emerge -av beep-media-player

输出如下：
These are the packages that I would merge, in order:

Calculating dependencies
!!! All ebuilds that could satisfy "beep-media-player" have been masked.
!!! One of the following masked packages is required to complete your request:
- media-sound/beep-media-player-0.9.7-r8 (masked by: package.mask)
# Tony Vroon <chainsaw@gentoo.org> (18 Feb 2006)
# Masked pending removal - upstream has discontinued this project
# Your upgrade path is media-sound/audacious; removal of this package is planned on 04/03/2006

- media-sound/beep-media-player-0.9.7-r6 (masked by: package.mask)
- media-sound/beep-media-player-0.9.7.1 (masked by: package.mask, ~x86 keyword)

media-sound/beep-media-player在profiles/package.mask文件里被“屏蔽”了，我在/usr/portage/package.mask里写了“media-sound/beep-media-player”以后再去emerge还是不管用，把ACCEPT_KEYWORDS改成~x86还是不行，问提出在哪了呢？

zhllg

/etc/portage/package.unmask

shaaben

问题解决了。谢谢楼上。
当时不知道想什么呢，把目录看成/usr了。