修改了make.conf文件里的CFLAGS标志，但是没有修改USE标记，该如何重新编译系统～

hongri2010

只是修改了/etc/make.conf文件里的CFLAGS标志，添加了－omit-frame-pointer，把-march修改为native，并没有修改USE标记，现在想重想编译整个系统，emerge应该使用哪些参数呢？

jsun

emerge -e world

hongri2010

谢谢jsun兄的回复～ ：）

jsun

多说一句，-e 是很痛苦的事，建议你
emerge -epv world >pkglst
然后用vim处理一下pkglst，做成脚本慢慢编译，中途断了也能接得上。不然即使与--resume --keep-going搭配也只能有两次出错机会，否则前功尽弃，又得从头来。

hongri2010

Post by jsun;2110566
多说一句，-e 是很痛苦的事，建议你
emerge -epv world >pkglst
然后用vim处理一下pkglst，做成脚本慢慢编译，中途断了也能接得上。不然即使与--resume --keep-going搭配也只能有两次出错机会，否则前功尽弃，又得从头来。

是呀，刚解决完keywords的问题，又出现了如下问题：
!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

dev-lang/python:2.6

  ('ebuild', '/', 'dev-lang/python-2.6.5-r3', 'merge') pulled in by
    =dev-lang/python-2.6* required by ('ebuild', '/', 'dev-python/pygtk-2.16.0-r1', 'merge')
    =dev-lang/python-2* required by ('ebuild', '/', 'net-analyzer/nmap-5.21-r1', 'merge')
    dev-lang/python:2.6[xml,ncurses,ssl,threads,gdbm,readline] required by ('ebuild', '/', 'dev-lang/python-3.1.2-r4', 'merge')
    (and 16 more)

  ('installed', '/', 'dev-lang/python-2.6.5-r3', 'nomerge') pulled in by
    dev-lang/python:2.6[xml,sqlite,ncurses,ssl,threads,gdbm,readline] required by ('installed', '/', 'dev-lang/python-3.1.2-r4', 'nomerge')
    (and 19 more)

  Explanation:

    New USE for 'dev-lang/python:2.6' are incorrectly set. In order to
    solve this, adjust USE to satisfy 'dev-
    lang/python:2.6[xml,sqlite,ncurses,ssl,threads,gdbm,readline]'.

dev-lang/python:3.1

  ('installed', '/', 'dev-lang/python-3.1.2-r4', 'nomerge') pulled in by
    >=dev-lang/python-2.5[sqlite,ncurses] required by ('ebuild', '/', 'app-emulation/vmware-workstation-6.5.3.185404', 'merge')
    (and 17 more)

  ('ebuild', '/', 'dev-lang/python-3.1.2-r4', 'merge') pulled in by
    dev-lang/python[xml] required by ('ebuild', '/', 'app-portage/gentoolkit-0.2.4.6.1-r1', 'merge')
    dev-lang/python required by ('ebuild', '/', 'dev-vcs/mercurial-1.5', 'merge')
    >=dev-lang/python-3 required by ('ebuild', '/', 'sys-apps/portage-2.1.8.3', 'merge')
    (and 14 more)

  Explanation:

    New USE for 'dev-lang/python:3.1' are incorrectly set. In order to
    solve this, adjust USE to satisfy '>=dev-
    lang/python-2.5[sqlite,ncurses]'.

sys-fs/udev:0

  ('installed', '/', 'sys-fs/udev-151-r4', 'nomerge') pulled in by
    >=sys-fs/udev-145[extras] required by ('ebuild', '/', 'gnome-base/gvfs-1.6.3', 'merge')
    (and 7 more)

  ('ebuild', '/', 'sys-fs/udev-151-r4', 'merge') pulled in by
    >=sys-fs/udev-138 required by ('ebuild', '/', 'gnome-base/gvfs-1.6.3', 'merge')
    >=sys-fs/udev-151-r4 required by ('ebuild', '/', 'sys-fs/lvm2-2.02.73', 'merge')
    virtual/dev-manager required by world
    (and 4 more)

  Explanation:

    New USE for 'sys-fs/udev:0' are incorrectly set. In order to solve
    this, adjust USE to satisfy '>=sys-fs/udev-145[extras]'.


谢谢jsun兄的建议，需要重装的软件太多了~ ：（

hongri2010

为什么使用 emerge -epv world >pkglst 不能重定向需要安装的软件列表呢？

jsun

emerge -e是不管portage tree，从头计算所有包的信赖关系。中间如果有问题断了，就得使用emerge --resume恢复，可是--resume的恢复次数是有限的，而如果再emerge -e，又得从头把所有包列出来安装，前面安过的包就白费了。

mathfeel

1. emerge -e world

复制代码

的時候最好先把一些USE flag先關掉而避免一些循環依賴的問題。你post的錯誤就是這類形的問題。emerge完畢後再

1. emerge -ND world

复制代码

個人認爲如果你只是修改

1. -march=native -fomit-frame-pointer

复制代码

没甚麼必要重新emerge整個世界。

lin1106

emerge -epv world，解决出错问题，然后再去掉p。
不久前刚装的，K桌面，760个包，emerge -e world 用了840min

------------
P35的板，E2200，8500GT，2G内存，IDE80G的硬盘

hongri2010

谢谢各位兄弟的支持！鉴于时间太长，可能性能提升也不是很明显，就先不emerge -e了~