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[SOLVED] Gentoo ARM port on PC with Qemu
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stampho
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Joined: 14 Feb 2010
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PostPosted: Sun Feb 14, 2010 11:49 am    Post subject: [SOLVED] Gentoo ARM port on PC with Qemu Reply with quote

Hi!
I try to install a Gentoo ARM port to my PC in a chroot enviroment. I installed Qemu and I set up the binfmt support in my kernel. Everything works fine, ARM ELF binaries can be executed on my PC. In the next step I downloaded a stage3 tarball and I unpacked it. Then I mounted the proc and dev directories. Finally I try to chroot to the directory where the tarball was unpacked, but I get the following message:
Code:
chroot: failed to run command `/bin/bash': No such file or directory


Of course the /bin/bash file exists.
Any suggestion what is the problem in this case?


Last edited by stampho on Fri Feb 26, 2010 1:23 pm; edited 1 time in total
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patrikas
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PostPosted: Sun Feb 14, 2010 2:34 pm    Post subject: Reply with quote

Is it valid ARM ELF binary ? (file /chrootdir/bin/bash) Can you run it before chrooting ?
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stampho
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PostPosted: Sun Feb 14, 2010 3:09 pm    Post subject: Reply with quote

I think it's valid:
Code:
mihaly armv7a-unknown-linux-gnueabi # file bin/bash
bin/bash: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, stripped


I can run it before chrooting, a qemu window appear by the /chrootdir/bin/bash command.
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ddc
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PostPosted: Sun Feb 14, 2010 3:20 pm    Post subject: Re: Gentoo ARM port on PC with Qemu Reply with quote

stampho wrote:
Code:
chroot: failed to run command `/bin/bash': No such file or directory


not exactly !
bash is dynamically linked, so "No such file or directory" means that one or more dynamics libraries are missing or wrong (in the chroot-ed tree)

dunno why/what .. just to point you out
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armin76
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PostPosted: Thu Feb 18, 2010 7:54 pm    Post subject: Reply with quote

Read http://www.gentoo.org/proj/en/base/embedded/handbook/?part=1&chap=5
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gringo
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PostPosted: Fri Feb 19, 2010 11:35 am    Post subject: Reply with quote

armin76 wrote:
Read http://www.gentoo.org/proj/en/base/embedded/handbook/?part=1&chap=5


thanks for the pointer ! :-) i remember having the same issue some time ago and now at least i know how it could be solved.

thanks !
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stampho
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PostPosted: Fri Feb 26, 2010 1:04 pm    Post subject: Reply with quote

Thanks it helps! This is what I looking for.
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