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I'm trying to install libsqlite3-dev for both i386 and amd64 on the same Ubuntu 12.04 machine. I'm developing an application that uses sqlite3, and want to compile and test both the 32-bit and 64-bit versions.

However it looks like the libsqlite3-dev:i386 package is incompatible with the libsqlite3-dev:amd64, as apt keeps wanting to remove one when I install the other.

Is there a way to get both installed on the same system?

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2 Answers 2

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You cannot install both of the -dev packages on the same system at the same time. You can only install one or the other, as they contain some of the same files. Multi-arch doesn't enable cross-compilation support, which is what you're trying to do. If you were to install the :i386 version of the sqlite development package, and build with the 64-bit compiler, you'll almost certainly have a broken build as a result.

Your best bet is to compile in a 32-bit chroot or VM, to build the 32-bit version.

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The header files are indeed in both packages, but their contents is identical. Even more, for other -dev packages such as zlib1g which also have shared (and identical) files, it is possible to install both version simultaneously. –  Wim Feb 13 '13 at 20:29
    
I just force-installed both packages, this didn't seem to break anything and I can now build (and run correctly) both versions. Is this just a case of the package maintainer declaring a conflict where there isn't really one? –  Wim Feb 13 '13 at 20:36

Personally, I do not consider forced installations even as a last resort. I think, you might find pbuilder quite useful. Here's a HOWTO for that. You can even install different distros for that purpose, and script the building process for different targets at the same time.

http://ubuntuforums.org/showthread.php?t=206382

So, you can even leave all the dev packages uninstalled. They get installed into that temporary chroot installation.

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