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The ia32-libs package is longer present in Ubuntu 12.04 repositories for a 64bit system. Are there any available replacement packages available for download?

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4 Answers

up vote 20 down vote accepted

The ia32-libs package was a hack to get 32-bit packages installed on a 64-bit installation. Since Ubuntu version 11.10 (Oneiric), Multi Arch has been added. One of the objectives for it is removing the ia32-libs package. Instead, you have to install the 32-bit libraries of a package with:

sudo apt-get install package-name:i386

You don't have to worry about this for packages in the standard repositories (e.g. the wine package). For external software, it's a bit more difficult because you have to find the dependencies manually. In that case, use you favorite search engine to find which libraries you need.

It seems that ia32-libs still exist, but merely as a convenience package to include common 32-bit libraries. This package now uses Multi Arch to install the 32-bit packages correctly.

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Well, how is one suppose to find all the dependencies and first install :i386 of those ? – User117 Sep 16 '12 at 17:52
@wingman Run ldd, passing a path to the binary as argument. If the output contains a line like libz.so.1 => not found, then you need to find libz.so.1. You can use packages.ubuntu.com or apt-file search to find the package containing that file. In the example I gave, you need to install zlib1g:i386. – Lekensteyn Sep 16 '12 at 21:10
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i am in a computer with ubuntu 10.10. following some tutorial on android development i have to install the ia32-libs. your answer talk about 11.10, but for this computer? what i have to do? – nkint Oct 25 '12 at 12:16
@nkint 10.10 is not supported anymore. If you want to proceed, you need to change your package sources. In 10.10 you need to install ia32-libs. But even then there is no guarantee that the android SDK works with that. – Lekensteyn Oct 26 '12 at 13:18
up vote 2 down vote

If you get that error, try:

sudo apt-get update

Then try it again:

sudo apt-get install ia32-libs

I just did a fresh install of 12.04, that package is still available in the repositories. In fact, I got that error myself before I ran update. Afterwards, it worked fine.

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up vote 1 down vote

I read that you are supposed to install the ia32-libs-multiarch package instead. However it didn't work for me and I get this error 

ia32-libs-multiarch:i386 : Depends: libgphoto2-2:i386 but it is not going to be installed.

The solution which worked for me was to install the following packages:

sudo apt-get install libc6:i386 libgcc1:i386 gcc-4.6-base:i386 libstdc++5:i386 libstdc++6:i386
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up vote 0 down vote

I believe this specific use case was replaced with the packages "lib32z1 lib32ncurses5 lib32bz2-1.0 lib32asound2", which is probably a more specific and useful answer than saying "you can use multi-arch".

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What? There's no specific use case in this question. – gertvdijk Jan 24 at 21:58
@gertvdijk: The package itself represents a limited use case; for a more general purpose you can multi-arch, but for people who were using this one specific package before, it seems to have been replaced with "lib32z1 lib32ncurses5 lib32bz2-1.0 lib32asound2", which you can install without having to use multi-arch: that covers the same use cases as the previous package. In essence, I found these answers unhelpful, as multi-arch was overkill for the reason that ia32-libs existed, was surprised there wasn't a more direct drop-in replacement, and wasn't disappointed when I researched this further. – saurik Feb 4 at 7:10

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