ThinkWiki - User contributions [en]

Gentoo compile flags

2005-03-30T14:59:17Z

192.33.106.228:

{| width="100%"
|style="vertical-align:middle;padding-right:20px;width:10px;" | [[image:Gentoo_logo.png|Gentoo]]
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">
=== Gentoo compile flags ===
This page gives an introduction to Gentoo compile flags.
</div>
|}
{| style="vertical-align:top;margin-left:20px;margin-right:20px"
|
__NOTOC__
=== About compile flags in Gentoo ===
One strength of Gentoo is the ability to use global flags for code optimizing. This is done through the file /etc/make.conf ([http://gentoo-wiki.com/MAN_make.conf_5 man page]). Since the Pentium Mobile (Centrino) used in some Thinkpads supports the mmx and sse extensions of the insturuction set, using compile flags can speedup programs quite a bit. To use optimized code, you have to adjust the USE ([http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=2 Gentoo Handbook]) variable, which contains the libraries and extensions you want to use and the CFLAGS variable, which contains compiler flags, that portage passes along to gcc.

If you want to set specific flags for only one package, you can also use the file /etc/portage/package.use instead of the USE variable in make.conf.

=== Which flags to use ===
In order to adjust USE correctly, you have to find out, which instruction set extensions your processor supports. You can use google for this, or look at /proc/cpuinfo. The Pentium M instruction set is compatible to a Pentium 4 and supports mmx and sse extensions, so your make.conf should contain something like this:

USE="mmx mmx2 sse sse2"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"

You might also use -O3, but it may cause crashes in your programs if you optimize too much.
Independently of the CPU it's also a good idea to tell portage which libraries to use. If you leave away all the libraries you don't need, you can save compile time, get a smaller binary size and faster programs.

For instance, if you know you don't use Gnome and don't need java support in you binaries, but you want to use KDE, your make.conf might contain
USE="mmx mmx2 sse sse2 qt kde -gnome -java"
If you want gnome support in your binaries at any later time, you just have to edit make.conf an run "emerge --newuse world" (this will take some time though).

=== Example files ===
These are the make.conf and package.use files I use for my T40P:
*make.conf
USE="X mmx mmx2 sse sse2 qt kde -gpm -gtk -gtk2 -gnome -arts -alsa -cups -java -esd -v4l -v4l1 -samba -ipv6 -directfb -lirc -svga"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
MAKEOPTS="-j2"

*package.use
sys-libs/glibc userlocales
app-laptop/tpb xosd
media-video/mplayer dvd xanim divx4linux network xvid live
media-libs/xine-lib dvd

=== Other portage features ===
There are lots of other great features in portage (the Gentoo package managing system). If you want to use Gentoo, you should read the docs on [http://gentoo.org gentoo.org] and the man pages of portage and make.conf.

|}

[[Category:Gentoo]]

Gentoo compile flags

2005-03-14T22:11:22Z

192.33.106.228:

{| width="100%"
|style="vertical-align:middle;padding-right:20px;width:10px;" | [[image:Gentoo_logo.png|Gentoo]]
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">
=== Gentoo compile flags ===
This page gives an introduction to Gentoo compile flags.
</div>
|}
{| style="vertical-align:top;margin-left:20px;margin-right:20px"
|
__NOTOC__
=== About compile flags in Gentoo ===
One strength of Gentoo is the ability to use global flags for code optimizing. This is done through the file /etc/make.conf ([http://gentoo-wiki.com/MAN_make.conf_5 man page]). Since the Pentium Mobile (Centrino) used in some Thinkpads supports the mmx and sse extensions of the insturuction set, using compile flags can speedup programs quite a bit. To use optimized code, you have to adjust the USE ([http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=2 Gentoo Handbook]) variable, which contains the libraries and extensions you want to use and the CFLAGS variable, which contains compiler flags, that portage passes along to gcc.

If you want to set specific flags for only one package, you can also use the file /etc/portage/package.use instead of the USE variable in make.conf.

=== Which flags to use ===
In order to adjust USE correctly, you have to find out, which instruction set extensions your processor supports. The Pentium M instruction set is compatible to a Pentium 4 and supports mmx and sse extensions, so your make.conf should contain something like this:

USE="mmx mmx2 sse sse2"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"

You might also use -O3, but it may cause crashes in your programs if you optimize too much.
Independently of the CPU it's also a good idea to tell portage which libraries to use. If you leave away all the libraries you don't need, you can save compile time, get a smaller binary size and faster programs.

For instance, if you know you don't use Gnome and don't need java support in you binaries, but you want to use KDE, your make.conf might contain
USE="mmx mmx2 sse sse2 qt kde -gnome -java"
If you want gnome support in your binaries at any later time, you just have to edit make.conf an run "emerge --newuse world" (this will take some time though).

=== Example files ===
These are the make.conf and package.use files I use for my T40P:
*make.conf
USE="X mmx mmx2 sse sse2 qt kde -gpm -gtk -gtk2 -gnome -arts -alsa -cups -java -esd -v4l -v4l1 -samba -ipv6 -directfb -lirc -svga"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
MAKEOPTS="-j2"

*package.use
sys-libs/glibc userlocales
app-laptop/tpb xosd
media-video/mplayer dvd xanim divx4linux network xvid live
media-libs/xine-lib dvd

|}

=== Other portage features ===
There are lots of other great features in portage (the Gentoo package managing system). If you want to use Gentoo, you should read the docs on [http://gentoo.org gentoo.org] and the man pages of portage and make.conf.

[[Category:Gentoo]]

Fglrx

2005-03-14T16:44:06Z

192.33.106.228:

== ATI drivers for Linux ==
Linux ATI driver for Radeon, FireGL and Mobility boards

How much is the speed gain versus the opensource drivers?

=== Project Homepage / Availability ===
http://www.ati.com/support/drivers/linux/radeon-linux.html

=== Status ===
Current version: 8.10.19 (16.02.2005)

=== Problems & Help ===

Driver Version 8.8.25: The following patch may be needed for kernels >= 2.6.10:
[http://www.rage3d.com/board/showthread.php?t=33798874 http://www.rage3d.com/board/showthread.php?t=33798874]

Driver Version 8.8.25: For kernels >= 2.6.11-rc1 try the following patch:
http://www.gehirn.org.uk/wiki/images/8.8.25-kernel-2.6.11+.patch

If the ATI driver works only without the hardware acceleration, take into consideration that fglrx_dri.so was linked
against libstdc++.so.5 which may not be present if your system uses gcc-3.4. To fix this, compile gcc-3.3.5
and copy libstdc++.so.5* to /usr/lib and update the dynamic linker cache.

=== Packages ===
*[[:Category:Debian | Debian]] Packages: http://xoomer.virgilio.it/flavio.stanchina/debian/fglrx-installer.html
*[[:Category:SuSE | SuSE]] Packages: ftp://ftp.suse.com/pub/suse/i386/supplementary/X/ATI/
*[[:Category:Gentoo | Gentoo]] $ emerge media-video/ati-drivers

=== Useful links ===
* [http://www.rage3d.com/content/articles/atilinuxhowto/ ATI Radeon Linux How-To]

* [http://www.rage3d.com/board/forumdisplay.php?f=61&daysprune=30&order=asc&sort=title Rage3D Linux Discussion Forum]

* [http://www.driverheaven.net/forumdisplay.php?f=103 Radeon Driver Forum at Driverheaven]

* [http://odin.prohosting.com/wedge01/gentoo-radeon-faq.html Gentoo ATI Radeon FAQ]

* [http://ati.cchtml.com/ Unofficial community ATI bugzilla] Very newly setup (!) bugzilla, which might grow to be a source for information about ATI bugs. Might then be monitored by ATI guys ([http://www.rage3d.com/board/showpost.php?p=1333438751&postcount=386], [http://www.rage3d.com/board/showpost.php?p=1333439009&postcount=390]). We will see how this develops.

[[Category:Drivers]] [[Category:Debian]] [[Category:SuSE]] [[Category:Gentoo]]

Fglrx

2005-03-14T16:43:14Z

192.33.106.228:

== ATI drivers for Linux ==
Linux ATI driver for Radeon, FireGL and Mobility boards

How much is the speed gain versus the opensource drivers?

=== Project Homepage / Availability ===
http://www.ati.com/support/drivers/linux/radeon-linux.html

=== Status ===
Current version: 8.10.19 (16.02.2005)

=== Problems & Help ===

Driver Version 8.8.25: The following patch may be needed for kernels >= 2.6.10:
[http://www.rage3d.com/board/showthread.php?t=33798874 http://www.rage3d.com/board/showthread.php?t=33798874]

Driver Version 8.8.25: For kernels >= 2.6.11-rc1 try the following patch:
http://www.gehirn.org.uk/wiki/images/8.8.25-kernel-2.6.11+.patch

If the ATI driver works only without the hardware acceleration, take into consideration that fglrx_dri.so was linked
against libstdc++.so.5 which may not be present if your system uses gcc-3.4. To fix this, compile gcc-3.3.5
and copy libstdc++.so.5* to /usr/lib and update the dynamic linker cache.

=== Packages ===
*[[:Category:Debian | Debian]] Packages: http://xoomer.virgilio.it/flavio.stanchina/debian/fglrx-installer.html
*[[:Category:SuSE | SuSE]] Packages: ftp://ftp.suse.com/pub/suse/i386/supplementary/X/ATI/
*[[:Category:Gentoo | Gentoo]] emerge edia-video/ati-drivers

=== Useful links ===
* [http://www.rage3d.com/content/articles/atilinuxhowto/ ATI Radeon Linux How-To]

* [http://www.rage3d.com/board/forumdisplay.php?f=61&daysprune=30&order=asc&sort=title Rage3D Linux Discussion Forum]

* [http://www.driverheaven.net/forumdisplay.php?f=103 Radeon Driver Forum at Driverheaven]

* [http://odin.prohosting.com/wedge01/gentoo-radeon-faq.html Gentoo ATI Radeon FAQ]

* [http://ati.cchtml.com/ Unofficial community ATI bugzilla] Very newly setup (!) bugzilla, which might grow to be a source for information about ATI bugs. Might then be monitored by ATI guys ([http://www.rage3d.com/board/showpost.php?p=1333438751&postcount=386], [http://www.rage3d.com/board/showpost.php?p=1333439009&postcount=390]). We will see how this develops.

[[Category:Drivers]] [[Category:Debian]] [[Category:SuSE]] [[Category:Gentoo]]

Ifplugd

2005-03-14T16:38:40Z

192.33.106.228:

__TOC__
ifplugd is a Linux daemon which will automatically configure your ethernet device when a cable is plugged in and automatically unconfigure it if the cable is pulled.

=== Features ===
*support for multiple ethernets
*use of native ifup/ifdown scripts
*supports ethtool, mii-diag and mii-tool APIs or can run without cable detection
*supports syslog
*optionally ignores short unplugged periods

=== Project Homepage / Availability ===
*Homepage: http://www.stud.uni-hamburg.de/users/lennart/projects/ifplugd/

=== Packages ===
*[[:Category:Debian | Debian]] packages: http://packages.debian.org/cgi-bin/search_packages.pl?searchon=names&version=all&exact=1&keywords=ifplugd
*[[:Category:SuSE | SuSE]] packages: http://packman.links2linux.de/?action=359
*[[:Category:Gentoo | Gentoo]] emerge ifplugd - but it will no work for Gentoo - see [http://bugs.gentoo.org/show_bug.cgi?id=28362 here]

=== Subversion ===
Is supposed to reside [https://seth.intheinter.net:8081/svn/ifplugd/ here], but the link doesn't work currently.

=== Status ===
*stable and active

=== Interesting links related to this project ===

*[[waproamd]]

[[Category:Tools]]

Tools

2005-03-14T16:33:35Z

192.33.106.228:

Information on Tools helping you to get along with your Thinkpad.

==Input==
*[[tpb]] <tt>(Thinkpad buttons)</tt>
*[http://rsim.cs.uiuc.edu/~sachs/tp-scroll/ tp-scroll] <tt>(Use trackpoint and middle button to scroll vertically. You may also use the built-in EmulateWheel option in both XFree86 and XOrg.)</tt>
*[http://tpctl.sourceforge.net/configure-trackpoint.html configure-trackpoint] <tt>(GUI TrackPoint configuration tool for the TrackPoint driver for 2.6 linux kernel)</tt>
*[http://www.slac.stanford.edu/~strauman/pers/tp4utils/ Linux Trackpoint Utilities] <tt>(An earlier trackpoint configuration tool)</tt>

==Graphics==
*[[radeontool]] <tt>(Tool for enabling/disabling background light and external video)</tt>
*[[atitvout]] <tt>(Tool to control TV out)</tt>

==Power Management==
*[[apmd]] <tt>(APM event daemon and tools)</tt>
*[http://tpctl.sf.net tpctl and configure-thinkpad] <tt>(ThinkPad configuration programs that are compatible with APM)</tt>
*[[acpid]] <tt>(ACPI event daemon)</tt>
*[http://sourceforge.net/projects/acpitool/ acpitool]<tt> (displays acpi information and can be used to set sleep mode)</tt>
*[[tphdisk]] <tt>(Tool to create a hibernation file.)</tt>
*[[laptop-mode-tools]] <tt>(laptop-mode configuration scripts)</tt>

==Networking==
*[[ifplugd]] <tt>(Daemon to reconfigure your network settings on cable (un)plugging)</tt>
*[[waproamd]] <tt>(Daemon for Wireless roaming with automatic WEP key handling)</tt>

Tools

2005-03-14T16:32:24Z

192.33.106.228:

Information on Tools helping you to get along with your Thinkpad.

==Input==
*[[tpb]] <tt>(Thinkpad buttons)</tt>
*[http://rsim.cs.uiuc.edu/~sachs/tp-scroll/ tp-scroll] <tt>(Use trackpoint and middle button to scroll vertically. You may also use the built-in EmulateWheel option in both XFree86 and XOrg.)</tt>
*[http://tpctl.sourceforge.net/configure-trackpoint.html configure-trackpoint] <tt>(GUI TrackPoint configuration tool for the TrackPoint driver for 2.6 linux kernel)</tt>
*[http://www.slac.stanford.edu/~strauman/pers/tp4utils/ Linux Trackpoint Utilities] <tt>(An earlier trackpoint configuration tool)</tt>

==Graphics==
*[[radeontool]] <tt>(Tool for enabling/disabling background light and external video)</tt>
*[[atitvout]] <tt>(Tool to control TV out)</tt>

==Power Management==
*[[apmd]] <tt>(APM event daemon and tools)</tt>
*[http://tpctl.sf.net tpctl and configure-thinkpad] <tt>(ThinkPad configuration programs that are compatible with APM)</tt>
*[[acpid]] <tt>(ACPI event daemon)</tt>
*[http://sourceforge.net/projects/acpitool/ acpitool]<tt> - displays acpi information and can be used to set sleep mode</tt>
*[[tphdisk]] <tt>(Tool to create a hibernation file.)</tt>
*[[laptop-mode-tools]] <tt>(laptop-mode configuration scripts)</tt>

==Networking==
*[[ifplugd]] <tt>(Daemon to reconfigure your network settings on cable (un)plugging)</tt>
*[[waproamd]] <tt>(Daemon for Wireless roaming with automatic WEP key handling)</tt>