The default value for NPTL_KERN_VER has been 2.6.9 for years.

That will not make a real difference, though. By switching from 2.6.9 to 2.6.30, the size of my /lib/libc.so.6 reduced by approximately 20KiB, or 1.3%.

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The result is that uname -a displays more info, specifically the mode of the CPU, on Gentoo than other Linux distributions. Generally this is not a bad thing. But I do have concerns:

(1) In my view the utility uname should remain a simple wrapper of the homonym system call. If CPU/vendor info really needs to be returned by uname, it is better to add it to kernel. This is also part of the reason why upstream rejected this patch.

(2) If I am used to finding CPU info from uname, I will likely forget the more orthodox method (cat /proc/cpuinfo). A job interviewer may not be that patient to listen to my explanation about the patch.

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ar x sudo_1.6.9p17-2_i386.deb

Or we can directly extract things from data.tar.gz contained in the .deb file:

ar p sudo_1.6.9p17-2_i386.deb data.tar.gz | tar -xzf -

No longer a user of Debian GNU/Linux, I still have to remember how to extract .deb files. I frequently need to cross-compile a 64-bit version of my program on a 32-bit system, and vice versa; but I don’t want to cross-compile by myself so many libraries on which my program depends. Instead, I find it a good idea to download a right .deb file from the Debian Packages Repository and pick out the .so files.

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Create a logrotate configuration file. /etc/logrotate.d/emergelog:

/var/log/emerge.log {
    compresscmd /bin/bzip2
    uncompresscmd /bin/bunzip2
    compressext .bz2
    rotate 100
    create 660 portage portage
    delaycompress
    daily
    size 2M
}

I configured my logrotate to compress using lzma by default, but genlop recognizes only gz and bz2, so I need to explicitly specify bzip2 (or gzip) here.

A wrapper for genlop is also necessary. /usr/local/bin/genlop:

#!/bin/bash

f=()
for x in /var/log/emerge.log*; do
    f=("${f[@]}" -f "$x")
done
exec /usr/bin/genlop "${f[@]}" "$@"

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2. Gentoo begins to mark gcc-4.3 stable

I have been waiting for this for more than six months…

GCC 4.3 eliminated some implicit inclusions among headers, and therefore has caused many compilation errors – most notably missing <cstdlib> and <cstring>. (It’s not GCC’s fault; it’s the coders’.)

I switched my default compiler from 4.2.4 to 4.3.2 just a few days ago, so I’m not a real hacker – hackers* always live on the bleeding edge. I reported only two bugs exposed by GCC 4.3 – should have been more had I switched earlier..

* A hacker is different from a cracker! Those who illegally and/or immorally crack computer systems or proprietary software should be called crackers.

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x86 laptop: debugging is completely disabled. About 5 GiB.

amd64 desktop: CFLAGS=”… -ggdb”; FEATURES=”splitdebug“. More than 11GiB!

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