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

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[[Category:Arch64 (English)]]
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[[Category:Arch64]]
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[[Category:HOWTOs (English)]]
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[[de:32Bit-Programme unter Arch64]]
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==Introduction==
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[[fr:Utiliser des applications 32bits avec Arch64]]
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64-Bit-Processors like Athlon 64 are able to execute 32- and 64-Bit-programs ar the same time. Unfortunately the x86_64-version of Arch (Arch64) does not provide any 32-Bit-libs by default.
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{{Merge|Multilib}}
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64-Bit-Processors like Athlon 64 are able to execute 32- and 64-bit programs at the same time.
  
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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 allready there.
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==Packages==
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32bit packages can now be found in the [multilib]-repository. You will need to add this repository before downloading any 32bit lib.
  
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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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==Installation==
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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.
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'''Atenttion''': Never try to install all libs with ''pacman -S lib32''. And do '''not''' install any arch32-package.
 
  
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==Packages==
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Some legacy C++ programs also need ''lib32-libstdc++5''.
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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.
 
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==Installation==
 
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You will allways 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.
 
  
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Some c++-programs also need ''lib32-libstdc++5''.
 
 
===OpenGL-Applications===
 
===OpenGL-Applications===
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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:
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* nVidia: lib32-nvidia-utils
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* Open source drivers: lib32-{ati,intel,mach64,mga,nouveau,r128,savage,sis,tdfx,unichrome}-dri
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* ATI: lib32-fglrx-utils
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* Closed source drivers: lib32-{catalyst,nvidia}-utils
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* 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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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''.
  
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==Tested Applications==
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==Environment Variables==
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* Doom3, Enemy-Territory, Unreal Tournament
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Some useful Env Variables when running 32bit-applications without chroot:
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** lib32-nvidia-utils, lib32-alsa-lib, [lib32-libstdc++5, lib32-openal]
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* Opera
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For gtk2 input modules and such
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** lib32-qt
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GTK_PATH=/opt/lib32/usr/lib/gtk-2.0/
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* Google Earth
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For pango (lib32-pango includes these config files)
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** lib32-qt and lib32-nvidia-utils
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PANGO_RC_FILE="/opt/lib32/config/pango/pangorc"
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* Skype
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Iconv (conversion from 'XXXXXXX' is not supported or cannot convert from X to Y -errors)
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** lib32-qt, lib32-alsa-lib
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GCONV_PATH=/opt/lib32/usr/lib/gconv
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Library paths without having them in /etc/ld.so.conf
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LD_LIBRARY_PATH="/opt/lib32/usr/lib/:/opt/lib32/lib/:$LD_LIBRARY_PATH"
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GDK stuff (GdkPixbuf warnings errors criticals, lib32-gtk2 includes the file)
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GDK_PIXBUF_MODULE_FILE="/opt/lib32/config/gdk/gdk-pixbuf.loaders"

Revision as of 08:59, 18 June 2013

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"
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