From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leopold Palomo-Avellaneda <leo@alaxarxa.net>
Date: Tue, 13 Sep 2016 14:40:49 +0200
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Subject: Re: [Xenomai] multiarch on ipipe kernel
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El Dimarts, 13 de setembre de 2016, a les 12:26:33, Frederik Bayart va 
escriure:
> Should it be possible to run an 32 bit non-rt binary on a 64 bit ipipe
> kernel ? I'm using debian jessie amd64 and xenomai 2.6.4 on kernel 3.18.20
> 
> I have added i386 as foreing architecture and installed the i386 toolchain
> $ dpkg --print-architectureamd64s$ dpkg --print-foreign-architecturesi386
> I have a small hello world binary
> 
> #include <stdio.h>
> int main(int argc, char* argv[]){  printf("hello world\n");  return 0;}
> I compile with 
> gcc -m32 -o hello hello.c
> This binary runs on the normal (non-ipipe) kernel
> linux-image-3.16.0-4-amd64.But if I'm booting the ipipe kernel on the same
> system, I get the error : -bash: ./hello: cannot execute binary file: Exec
> format error
> So the problem seems to be related to the kernel. But I didn't find whether
> a kernel option could be the cause. The kernel was prepared with I only
> found that you can't run 32 bit xenomai libraries on a 64 bit kernel, but
> this binary is not using these libraries. Kind regards,

do you have libc6-dev-i386 and libc6-i686 installed?

I'm able to run your example with a similar setup.

Cheers,

Leopold

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