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brenix

Member

From: California

Registered: 2008-03-05

Posts: 185

[Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

I know this can be done, but I cant find a good relevant wiki, topic, or guide regarding this topic. I basically want to compile the kernel26-ck package for a 32-bit kernel from a 64-bit machine since the 32-bit machine takes forever to compile. I guess I have a few things that come to mind:

1. Are there package prerequisites?
2. Is there any configuration required?
3. Can I build the package using makepkg still?

Any suggestions or links would help! Thanks

Last edited by brenix (2010-03-17 03:16:25)

brenix

Member

From: California

Registered: 2008-03-05

Posts: 185

Re: [Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

Ok, well I'm a bit further after following this guide to setup a 32-bit chroot environment. I'm assuming I can then compile the kernel as if it were in a 32-bit environment, but whenever starting to compile the package, it comes back stating "Build failed" with no other errors. Anyone?

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

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Re: [Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

You need a multilib environment, I'm not sure if a 32 bit chroot can compensate for that. I do know Arch's x86_64 branch is not multilib though.

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ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,355

Re: [Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

What exactly did you follow from that guide? Are you running schroot -p?

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tavianator

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From: Waterloo, ON, Canada

Registered: 2007-08-21

Posts: 858

Website

Re: [Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

32-bit chroot will work fine, BUT be sure to run "linux32 schroot -p" rather than just "schroot -p" in order to get the build process to detect a 32-bit rather than 64-bit host.

brenix

Member

From: California

Registered: 2008-03-05

Posts: 185

Re: [Solved] Cross-compiling: Compiling on 64-bit for a 32-bit computer?

32-bit chroot will work fine, BUT be sure to run "linux32 schroot -p" rather than just "schroot -p" in order to get the build process to detect a 32-bit rather than 64-bit host.

That's exactly what I needed to do. By running "linux32 schroot -p -- bash", it chrooted me into arch32 and I was able to compile the kernel. Thanks guys!

Last edited by brenix (2010-03-17 04:31:38)