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I have an app which I need to generate the following: Ubuntu 32/64 bits and the same to Windows. Now I have 64Bits Ubuntu 13.04 and I have Virtual Box with 13.04 32bits on the same machine. How reliable is the file produced by Virtuabox? Can it be uploaded for customers to use it?

I currently have no other machine (its coming and so it will finally sort out, but meanwhile I need to get it sorted for now)

How reliable is Virtual machine binaries especially when run on native machine? I have posts like this to make me worry a bit! https://stackoverflow.com/questions/8916145/c-doubles-precision-virtual-machines-and-gcc

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Stefano Mtangoo
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  • Question is unclear: what do you mean by reliable? Running gcc ( or any program ) under a virtual machine will produce the same results as on a real machine. – psusi Nov 04 '13 at 03:28
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    @psusi if you check the link, he's asking if he will have some kind of unexpected behavior when using Virtual Machines. (In that specific case there was a bug that the same code produced different results in a real and a virtual machine) – Braiam Nov 04 '13 at 13:46

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Your concerns are overestimated:

Upgrading virtualbox to version 4.1.8r75467 resolved the issue.

Ubuntu have more than 3 years and VirtualBox is 2 (3?) versions ahead. So, there shouldn't be problems.

BTW, you don't need a 32-bit machine to compile 32-bits binaries, since Ubuntu supports multiarch, you only need to install the 32-bit counter-part of the libraries, example:

You need to compile something using openssl in 32 and 64 bits, you can use export CFLAGS=-m32 or -m32 (depends the compiler, I'm using gcc), but, what about the libraries? Install them using :i386 in apt

 sudo apt-get install openssl-dev:i386
 gcc -m32 -o program program.c

That will produce your 32-bit program in a 64-bit system.

Related:

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Braiam
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