Using 32-bit applications on Arch64
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.
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.
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.
Attention: Never try to install all libs with pacman -S lib32. And do not install any arch32-package.
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.
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.
Programs using OpenGL need one of the following libs which fits to your graphicscard:
- nVidia: lib32-nvidia-utils
- ATI: lib32-fglrx-utils
- DRI: (all opensource-drivers like those for Intel-chips) lib32-libgl-dri
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.
- Doom3, Enemy-Territory, Unreal Tournament
- lib32-nvidia-utils, lib32-alsa-lib, [lib32-libstdc++5, lib32-openal]
- Google Earth
- lib32-qt and lib32-nvidia-utils
Note : Google Earth seems to work here without lib32-qt
- lib32-qt, lib32-alsa-lib
Some variables that are useful when running 32bit-applications without chroot
For gtk2 input modules and such
For pango (lib32-pango includes these config files)
Iconv (conversion from 'XXXXXXX' is not supported or cannot convert from X to Y -errors)
Library paths without having them in /etc/ld.so.conf