Difference between revisions of "Using 32-bit applications on Arch64"

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[[Category:Arch64 (English)]]
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[[Category:Arch64]]
{{i18n|Using 32-bit applications on Arch64}}
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[[fr:Utiliser des applications 32bits avec Arch64]]
 
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{{Merge|Multilib}}
==Introduction==
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64-Bit-Processors like Athlon 64 are able to execute 32- and 64-bit programs at the same time.
64-Bit-Processors like Athlon 64 are able to execute 32- and 64-Bit-programs at the same time. Unfortunately the x86_64-version of Arch (Arch64) does not provide any 32-Bit-libs by default.
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Currently I am working on an easy solution to solve this. It does not use a cross-compiler nor a chroot-environment. I just make use of the arch32-packages which are already there.
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''Note'': All libs will be installed under ''/opt/lib32''. Arch64 should not be affected by this. In the case of any problems use ''pacman -R lib32'' to remove all libs.
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'''Attention''': '''Never try to install all libs with ''pacman -S lib32'''''.
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And do '''not''' install any arch32-package. ''lib32-*'' packages are made to run ''bin32-*'' packages
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==Packages==
 
==Packages==
 
32bit packages can now be found in the [multilib]-repository. You will need to add this repository before downloading any 32bit lib.
 
32bit packages can now be found in the [multilib]-repository. You will need to add this repository before downloading any 32bit lib.
 
OUTDATED:All 32-bit-packages can be found in the [community]-repository. The packages are kept in sync to the ones from arch32. Use them at your own risk.
 
  
 
==Installation==
 
==Installation==
 
You will always need to install ''lib32-glibc'' in order to execute 32-bit-programs. It might be necessary to fake the output of ''uname''. Use the package ''linux32'' for this.
 
You will always need to install ''lib32-glibc'' in order to execute 32-bit-programs. It might be necessary to fake the output of ''uname''. Use the package ''linux32'' for this.
  
Some c++-programs also need ''lib32-libstdc++5''.
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Some legacy C++ programs also need ''lib32-libstdc++5''.
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===OpenGL-Applications===
 
===OpenGL-Applications===
Programs using OpenGL need one of the following libs which fits to your graphicscard:
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Programs using OpenGL need one of the following libraries:
* nVidia: lib32-nvidia-utils
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* Open source drivers: lib32-{ati,intel,mach64,mga,nouveau,r128,savage,sis,tdfx,unichrome}-dri
* ATI: lib32-catalyst-utils
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* Closed source drivers: lib32-{catalyst,nvidia}-utils
* DRI: (all opensource-drivers like those for Intel-chips) lib32-libgl-dri
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* Software rendering: lib32-libgl
  
 
===QT-Applications===
 
===QT-Applications===
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===Alsa & OpenAL===
 
===Alsa & OpenAL===
 
For Alsa and OpenAL-Support you have to install ''lib32-alsa-lib'' and ''lib32-openal''.
 
For Alsa and OpenAL-Support you have to install ''lib32-alsa-lib'' and ''lib32-openal''.
 
==Tested Applications==
 
* Doom3, Enemy-Territory, Unreal Tournament
 
** lib32-nvidia-utils, lib32-alsa-lib, [lib32-libstdc++5, lib32-openal]
 
* Opera
 
** lib32-qt
 
* Google Earth
 
** lib32-qt lib32-nvidia-utils lib32-gtk2 lib32-curl
 
Note : Google Earth seems to work here without lib32-qt
 
* Skype
 
** lib32-qt, lib32-alsa-lib
 
  
 
==Environment Variables==
 
==Environment Variables==

Revision as of 15:51, 22 February 2014

Merge-arrows-2.pngThis article or section is a candidate for merging with Multilib.Merge-arrows-2.png

Notes: please use the second argument of the template to provide more detailed indications. (Discuss in Talk:Using 32-bit applications on Arch64#)

64-Bit-Processors like Athlon 64 are able to execute 32- and 64-bit programs at the same time.

Packages

32bit packages can now be found in the [multilib]-repository. You will need to add this repository before downloading any 32bit lib.

Installation

You will always need to install lib32-glibc in order to execute 32-bit-programs. It might be necessary to fake the output of uname. Use the package linux32 for this.

Some legacy C++ programs also need lib32-libstdc++5.

OpenGL-Applications

Programs using OpenGL need one of the following libraries:

  • Open source drivers: lib32-{ati,intel,mach64,mga,nouveau,r128,savage,sis,tdfx,unichrome}-dri
  • Closed source drivers: lib32-{catalyst,nvidia}-utils
  • Software rendering: lib32-libgl

QT-Applications

Programs using QT should run at once after installing lib32-qt.

Alsa & OpenAL

For Alsa and OpenAL-Support you have to install lib32-alsa-lib and lib32-openal.

Environment Variables

Some useful Env Variables when running 32bit-applications without chroot:

For gtk2 input modules and such

GTK_PATH=/opt/lib32/usr/lib/gtk-2.0/

For pango (lib32-pango includes these config files)

PANGO_RC_FILE="/opt/lib32/config/pango/pangorc"

Iconv (conversion from 'XXXXXXX' is not supported or cannot convert from X to Y -errors)

GCONV_PATH=/opt/lib32/usr/lib/gconv

Library paths without having them in /etc/ld.so.conf

LD_LIBRARY_PATH="/opt/lib32/usr/lib/:/opt/lib32/lib/:$LD_LIBRARY_PATH"

GDK stuff (GdkPixbuf warnings errors criticals, lib32-gtk2 includes the file)

GDK_PIXBUF_MODULE_FILE="/opt/lib32/config/gdk/gdk-pixbuf.loaders"