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linky_fan
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PostPosted: Sat Feb 05, 2005 10:59 am    Post subject: Reply with quote

Quote:
差点忘了 - 不知道大家留意过没有, 系统自举 (bootstrap) 过程中, gcc, glibc 都是要 build 两次的, 这个和这里讨论的 glibc nptl/linuxthread 各 build 一次不是一回事哦. 系统自举的时候 gcc, glibc 为什么都要 build 两次涅? 感兴趣的自己考虑一下, 呵呵

第一次我用"nptl"bootsrap(以前都是stage3的), 没有加上"nptlonly"结果bootstrap的时间比不加'nptl'时候多了将近一倍, 因为本来算好差不多到晚上11点左右bootstrap就会结束了(从九点开始), 没想到居然弄到十二点半, 生气郁闷的时候发现原来加上"nptl"不加"nptlonly"glibc在bootstrap中会编译两趟, 第一次是linuxthread, 第二次才是nptl, 事后用ldd看了一下/bin下面随便一个二进制文件,glibc的库是链接到/lib/tls/libc.so.6(nptl的libc库,好像是redhat首先这么干的). 不过在/lib下面还有一个libc.so.6, 这个我看了一下是linuxthread的libc库. 我觉得这大概就是为了方便前期的调试(万一不行还有后悔药可以吃嘛),后来也就像预定俗称一样了, 大家用"nptl nptlonly"的可以自己去看看咯. 和这个应该不一样的.

顺便问个问题, 现在我已经做好了gentoo(用上面的方法), 不过有点小麻烦, 就是在emerge -pv gnome-terminal的时候报错, 说是没有一个ebuild满足virtual/fam的, gnmoe也一样.主要用gnome-terminal的原因是在它里面可以^C , ^V的, 比较方便

我的系统是gentoo 2004.3 + nptl(gcc 3.4.3)+ xorg 6.8.1 + fvwm.
Cure兄, 你看到过俺的桌面的, 我就不贴了.
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PostPosted: Sat Feb 05, 2005 12:26 pm    Post subject: Reply with quote

linky_fan wrote:
顺便问个问题, 现在我已经做好了gentoo(用上面的方法), 不过有点小麻烦, 就是在emerge -pv gnome-terminal的时候报错, 说是没有一个ebuild满足virtual/fam的, gnmoe也一样.

Try:
# emerge app-admin/fam && emerge -a gnome-terminal
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EricHsu
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PostPosted: Sun Feb 06, 2005 6:13 am    Post subject: Reply with quote

linky_fan wrote:
生气郁闷的时候发现原来加上"nptl"不加"nptlonly"glibc在bootstrap中会编译两趟, 第一次是linuxthread, 第二次才是nptl, 事后用ldd看了一下/bin下面随便一个二进制文件,glibc的库是链接到/lib/tls/libc.so.6(nptl的libc库,好像是redhat首先这么干的). 不过在/lib下面还有一个libc.so.6, 这个我看了一下是linuxthread的libc库. 我觉得这大概就是为了方便前期的调试(万一不行还有后悔药可以吃嘛),后来也就像预定俗称一样了, 大家用"nptl nptlonly"的可以自己去看看咯. 和这个应该不一样的.


我的系统是 nptl nptlonly 的, 我看了一下:
Code:

eric@gentux ~ $ ldd /usr/bin/man
        linux-gate.so.1 =>  (0xffffe000)
        libc.so.6 => /lib/libc.so.6 (0xb7eb4000)
        /lib/ld-linux.so.2 (0xb7fea000)
eric@gentux ~ $ ldd /usr/bin/who
        linux-gate.so.1 =>  (0xffffe000)
        libc.so.6 => /lib/libc.so.6 (0xb7eb4000)
        /lib/ld-linux.so.2 (0xb7fea000)
eric@gentux ~ $ ls -l /lib/libc.so.6
lrwxrwxrwx  1 root root 13 12月 20 21:41 /lib/libc.so.6 -> libc-2.3.4.so

关于为什么自举的时候会把 gcc/glibc 都编两次, 我个人的看法是: gentoo 式追求纯粹的做法? - 由于第一次 build 出来的 gcc/glibc 是 LiveCD 里的 gcc/glibc 编译的, LiveCD 的 gcc/glibc 不是针对我们的机器优化过的, 所以来个第二次: 用针对我们机器优化过的刚 build 出来的 gcc/glibc 再把它们自己 build 一次 (自举的含义所在?!), 就得到一个纯粹的优化的 gcc/glibc 了?

这只是我的猜想... 不一定对, 知道真正原因的朋友记得说说! 我很想知道真正的原因! :D

Quote:

顺便问个问题, 现在我已经做好了gentoo(用上面的方法), 不过有点小麻烦, 就是在emerge -pv gnome-terminal的时候报错, 说是没有一个ebuild满足virtual/fam的, gnmoe也一样.主要用gnome-terminal的原因是在它里面可以^C , ^V的, 比较方便


我也是 gnome-terminal 的粉丝~ 虽然 xfce4 里现在也开发了个类似它的 terminal (就这名字!), 可是还是有些 bug (比如菜单栏隐藏后, 就不能用 alt + 数字来切换 tab 页了...), 所以还是紧密地团结在 gnome-terminal 核心的周围 :lol:

virtual/fam 的问题我也遇到过, 如 Hauser 的建议就可以解决. 似乎是 portage 里的一个小 bug...
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linky_fan
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PostPosted: Tue Feb 08, 2005 4:03 pm    Post subject: Reply with quote

Quote:

关于为什么自举的时候会把 gcc/glibc 都编两次, 我个人的看法是: gentoo 式追求纯粹的做法? - 由于第一次 build 出来的 gcc/glibc 是 LiveCD 里的 gcc/glibc 编译的, LiveCD 的 gcc/glibc 不是针对我们的机器优化过的, 所以来个第二次: 用针对我们机器优化过的刚 build 出来的 gcc/glibc 再把它们自己 build 一次 (自举的含义所在?!), 就得到一个纯粹的优化的 gcc/glibc 了?

我觉得bootstrap有点类似于lfs中的toolchain, 因为在emerge system的时候还是会有一个安装的过程(从-pv中可以看到的,不是gcc就是glibc)

virtual/fam的这个问题我search一下过,找到的就是这个app/fam, 当时不是很肯定就没有装, 明天我试试, 今天晚上女朋友过来, 麻烦 :cry:
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PostPosted: Thu Feb 10, 2005 7:51 pm    Post subject: Reply with quote

Sorry for English,.

If you read about the message when emerging glibc, or bootstrap, the reason lies in that the linuxthread exists for backward compatiblities.

For example. Matlab 6.5 does not support nptl, neither does Maya. Search maya in this forum.
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linky_fan
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PostPosted: Fri Feb 11, 2005 1:00 pm    Post subject: Reply with quote

Quote:

If you read about the message when emerging glibc, or bootstrap, the reason lies in that the linuxthread exists for backward compatiblities.

Thank you ^_^
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howjay
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PostPosted: Sat Feb 12, 2005 4:20 pm    Post subject: Reply with quote

gcc自举2次是因为第二次的才是真正最后用的gcc吧,而第二这个gcc需要第一个gcc来生成,不知道说的对不对喔~ :?:
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EricHsu
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PostPosted: Sun Feb 13, 2005 3:21 am    Post subject: Reply with quote

bookstack wrote:
Sorry for English,.

If you read about the message when emerging glibc, or bootstrap, the reason lies in that the linuxthread exists for backward compatiblities.

For example. Matlab 6.5 does not support nptl, neither does Maya. Search maya in this forum.


IIRC, the maintainer of glibc added the "nptlonly" useflag for preventing glibc from building twice (one for linuxthread, the other for nptl) while the "nptl" flag is set. (However, I couldn't find that post now... long time ago...)

So, with "nptlonly" set, glibc should be built only once while emerging it (correct me if I'm wrong :D , I'll check next time I update it to make sure...)

While bootstraping the system (with "nptl nptlonly" set), it do make sense to build glibc twice (linuxthread/nptl), maybe some of the system components works with only linuxthread? But, in later glibc update, the "nptl nptlonly" flags will result in building a nptl only glibc (my glibc is nptl only, no linuxthread version installed), why wouldn't this break the system? :roll:

There still another question: why does gcc build twice in bootstrap too?

I guess the possible answer is: the LiveCD's gcc/glibc build the system's gcc/glibc, then the system's gcc/glibc build themselves again (isn't that what bootstrap mean?) to get a more pure optimized version...

still confused :evil:
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PostPosted: Sun Feb 13, 2005 3:22 am    Post subject: Reply with quote

howjay wrote:
gcc自举2次是因为第二次的才是真正最后用的gcc吧,而第二这个gcc需要第一个gcc来生成,不知道说的对不对喔~ :?:

我也这么想... 可是没啥实际的证据可以说服自己或者推翻自己... 等下次 glibc 升级再仔细看看...
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PostPosted: Thu Feb 17, 2005 6:10 am    Post subject: Reply with quote

何必自己瞎猜,问开发者不就完了,或许我想得太简单?或许有开发文档?
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Lance
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PostPosted: Tue Mar 15, 2005 1:52 am    Post subject: Reply with quote

先顶后收藏!

有时间时动手做!

祝版主早日找到工作!
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PostPosted: Tue Mar 15, 2005 11:37 am    Post subject: Reply with quote

楼主能不能把制作Stage4的方法贴出来?8O
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EricHsu
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PostPosted: Wed Mar 16, 2005 1:11 am    Post subject: Reply with quote

to Lance,

俺工作啦, 在深圳一家公司搞兔兔:) 冒个头先 ;)

to ldh168,

所谓的 stage4 就是用 tar 命令把整个系统打个 .tar.bz2 包, 你可以先搜索一下论坛: stage4
有一篇详细的英文 howto 的. 如果不乐意看英文的呢, 那我稍后给写一下吧 :)
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PostPosted: Wed Apr 27, 2005 2:18 am    Post subject: Reply with quote

EricHsu wrote:
to Lance,

俺工作啦, 在深圳一家公司搞兔兔:) 冒个头先 ;)

to ldh168,

所谓的 stage4 就是用 tar 命令把整个系统打个 .tar.bz2 包, 你可以先搜索一下论坛: stage4
有一篇详细的英文 howto 的. 如果不乐意看英文的呢, 那我稍后给写一下吧 :)



那真太好了,恭喜!

以后更可以公私兼顾了 :-)


赶明儿再升级一个用GCC4.0的"快若刀锋"安装指南.
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PostPosted: Wed Apr 27, 2005 2:21 am    Post subject: Reply with quote

Lance wrote:

那真太好了,恭喜!

以后更可以公私兼顾了 :-)


呵呵, 每天都上来逛逛 :)
这段时间忙过去之后 (因公需要在看一个有趣的开源项目中~) 就继续写点什么和大家交流:)

Quote:

赶明儿再升级一个用GCC4.0的"快若刀锋"安装指南.


记得把心得发上来!
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PostPosted: Wed Apr 27, 2005 3:36 am    Post subject: Reply with quote

Quote:

這樣我們可以看到兩點:1.xp 不受 1024 磁柱限制。2.xp雖然可以裝到extended分區裡,但一定要在某個primary的分區有個立足點才行(至少安裝程式有這樣的要求,不過就不知道可不可以用vmware的physical disk方式安裝到extended分區裡,誰有條件的話可以試一試)。


下XP是可以装在扩展分区里面的 但是主分区必须有1个WINDOWS可识别的分区因为分区启动信息始终都在主分区里面
另因为NTLDR文件对分区表要检查,所以用vmware的physical disk方式安裝到extended虽然可行但是GRUB根本无法引导 除非vmware在物理
硬盘上也有主分区(不要妄想主分区使用虚拟硬盘,将xp装在物理扩展分区,离开虚拟机的主分区100%不能启动)

以下是我的试想,还没有测试过哈
/dev/hda1 fat32
/dev/hda2 ext2
/dev/hda3 * 扩展
/dev/hda5 ntfs
/dev.hda6 ext3
/dev/hda7 swap
主分区和逻辑分区的划分会不会造成系统速度的降低我不是很清楚(我觉得这点速度不会感觉到吧)
用虚拟机,虚拟主分区,物理硬盘/dev/hda5 装xp
然后在用光盘在/dev/hda5/分区再装一遍XP 对就是覆盖安装 :)在win下和linux下共享一个xp
其实还有个办法,就是把虚拟主分区的内容打包到/dev/hda1 但是要DEBUG ntldr那个文件 可惜我不会 :(
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PostPosted: Thu Jun 16, 2005 8:36 am    Post subject: 出错了 Reply with quote

按照EricHsu兄的步骤
# unlink /etc/make.profile
# ln -sf /usr/portage/profiles/default-linux/x86/2004.2/gcc34 /etc/make.profile

接下来的# emerge --oneshot --nodeps gcc-config就出错了。
Code:
!!!/etc/make.profile is not a symlink and will probably prevent most merges.
!!!It should point into a profile within /usr/portage/profiles/
(You can safely ignore this message when syncing.It's harmless)
!!!ARCH is not set.Are you missing the /etc/make.profile symlink?
!!!Is the symlink correct?Is your portage tree complete?


what does that mean and what should I do?

另外gcc4.0也早已出来了,不过目前好像问题还很多,有必要用gcc4.0吗?
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PostPosted: Thu Jun 16, 2005 10:52 am    Post subject: Re: 出错了 Reply with quote

punkid wrote:
按照EricHsu兄的步骤
# unlink /etc/make.profile
# ln -sf /usr/portage/profiles/default-linux/x86/2004.2/gcc34 /etc/make.profile

接下来的# emerge --oneshot --nodeps gcc-config就出错了。
Code:
!!!/etc/make.profile is not a symlink and will probably prevent most merges.
!!!It should point into a profile within /usr/portage/profiles/
(You can safely ignore this message when syncing.It's harmless)
!!!ARCH is not set.Are you missing the /etc/make.profile symlink?
!!!Is the symlink correct?Is your portage tree complete?


what does that mean and what should I do?

另外gcc4.0也早已出来了,不过目前好像问题还很多,有必要用gcc4.0吗?


Code:

file /etc/make.profile
/etc/make.profile: symbolic link to `/usr/portage/profiles/default-linux/x86/2005.0/'


我现在是稳定为主,为什么就要最新的呢?用gcc4的话天知道会在编译的时候出什么问题
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PostPosted: Fri Jun 17, 2005 4:55 am    Post subject: Reply with quote

popsetup wrote:
以下是我的试想,还没有测试过哈
/dev/hda1 fat32
/dev/hda2 ext2
/dev/hda3 * 扩展
/dev/hda5 ntfs
/dev.hda6 ext3
/dev/hda7 swap
主分区和逻辑分区的划分会不会造成系统速度的降低我不是很清楚(我觉得这点速度不会感觉到吧)
用虚拟机,虚拟主分区,物理硬盘/dev/hda5 装xp
然后在用光盘在/dev/hda5/分区再装一遍XP 对就是覆盖安装 :)在win下和linux下共享一个xp
其实还有个办法,就是把虚拟主分区的内容打包到/dev/hda1 但是要DEBUG ntldr那个文件 可惜我不会 :(

如果你的hda1是fat32,XP可以直接裝到hda5里(當然會有部分啟動文件會裝到hda1里去),不需要用到vmware的。
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PostPosted: Mon Jun 20, 2005 1:01 pm    Post subject: 又失败了 Reply with quote

郁闷啊,安装了近16个小时的gentoo最后栽在了reiser4上,我用的是2.6.11-morph11内核,根据前面帖子的提示,关闭4stacks就可以看到reiser4的内核模块了,但是关闭后我在config里还是看不到啊,自己手动添加了也没有用。安装了16个小时的gentoo成了废物555555555....谁帮我看看原因啊。

另外,自己在多次失败,安装这个快若刀锋般的linux时也发现了几点问题:

1,使用CXXFLAGS="${CFLAGS} -fvisibility-inlines-hidden"参数容易出问题,用CXXFLAGS="${CFLAGS}"更为稳定,保守。我前几次编译失败都是因为这个。不知道这句参数到底什么意思?

2.
Code:
# unlink /etc/make.profile
# ln -sf /usr/portage/profiles/default-linux/x86/2004.2/gcc34 /etc/make.profile

事实上这步似乎不必要,系统默认的就是这个了吧。我自己用2004.3和2005.0的stage1编译时都已经是默认的了。

3.系统自举时已经编译glibc了,怎么在emerge system又重新编译glibc啊,这个glibc的编译可耗费了我不少时间。

请大家先帮忙帮我解决一下morph内核的reiser4问题吧!我1天的忙活就这么白费了。
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PostPosted: Tue Jun 21, 2005 4:52 am    Post subject: Reply with quote

punkid wrote:
郁闷啊,安装了近16个小时的gentoo最后栽在了reiser4上........安装了16个小时的gentoo成了废物555555555....

It's just a kernel, your installation is OK; either you don't use reiser4 or change to another kernel, simple as that.

punkid wrote:
1,使用CXXFLAGS="${CFLAGS} -fvisibility-inlines-hidden"参数容易出问题...不知道这句参数到底什么意思?

Take a look at this thread:https://forums.gentoo.org/viewtopic-t-303068-highlight-fvisibility.html

punkid wrote:
2.
Code:
# unlink /etc/make.profile
# ln -sf /usr/portage/profiles/default-linux/x86/2004.2/gcc34 /etc/make.profile

.......系统默认的就是这个了吧。

That is not true, none of the default profiles (2004.2, 2004.3 or 2005.1) uses gcc-3.4.x.

punkid wrote:
3......这个glibc的编译可耗费了我不少时间。

Use "userlocales" so glibc only compiles the locales you want, it saves you a lot of time.
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PostPosted: Mon Jul 04, 2005 2:07 am    Post subject: Re: 出错了 Reply with quote

tecehux wrote:

我现在是稳定为主,为什么就要最新的呢?用gcc4的话天知道会在编译的时候出什么问题


这个非常赞同, 因为好多软件还没完全针对 gcc 4.0 进行 patch, 很可能会编译失败噢.
所以我装了个 FC4 体验 gcc 4 build 出来的系统的感觉, hoho
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PostPosted: Mon Jul 04, 2005 3:32 pm    Post subject: Re: 出错了 Reply with quote

EricHsu wrote:
tecehux wrote:

我现在是稳定为主,为什么就要最新的呢?用gcc4的话天知道会在编译的时候出什么问题


这个非常赞同, 因为好多软件还没完全针对 gcc 4.0 进行 patch, 很可能会编译失败噢.
所以我装了个 FC4 体验 gcc 4 build 出来的系统的感觉, hoho


什么感觉?很high?
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PostPosted: Tue Jul 05, 2005 11:45 am    Post subject: Re: 出错了 Reply with quote

wokick wrote:

什么感觉?很high?


像爬上主楼尖儿上的感觉, 嘿嘿.

不过 FC4 bug 确实挺多的, 之前听说 longhorn 没蓝屏了, 但是改红屏了, FC4 这就赶上来了: 关机/重启的时候就是红屏, 没有 X, 没有 console 输出, 反正能给你关上或者重启.

里面带的 elipse 3.1M6, 是拿 gcj build 的 native 版本, 最大的表现是 file chooser dialog 是 gnome 的那个, 但是也是有 bug, 菜单上就有一个不完整的没有任何功能的菜单项...

还有... 不说了, wow..

但是还是值得去尝尝鲜的, 毕竟等 gentoo portage 里的所有软件都为 gcc 4 patch 上还得一段时间 (为啥不能从 FC 那边弄 patch 过的包过来?? 奇怪...)
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PostPosted: Tue Jul 05, 2005 1:01 pm    Post subject: Reply with quote

传说gcc4加了很多优化,比如vector optimization,之类的,可以让很多程序飞起来。用gcc4 build的FC,有没有感觉快一些?
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