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Re: Help requested: Packages which FTBFS randomly

 ❦ 22 février 2017 00:46 +0100, Adam Borowski <kilobyte@xxxxxxxxxx> :

>> > > * using a qemu build chroot (Debian doesn't do this, other might)
>> > 
>> > Is that because QEMU is slow, or some other reason?
>> AIUI qemu(-static) cannot handle threading very well. So if a build
>> process uses such applications, things turn bad. Typical observation was
>> msgmerge stuck in an endless loop at 100% CPU. Lesson learned: There is
>> a reason why Debian builds do not use emulation.
> That's qemu-user.  On the other hand, qemu-system, while nowhere as
> convenient, is safe and reliable.  Its bugs don't exceed the differences
> between revisions of real hardware.

It doesn't emulate correctly inability of some architectures to do
unaligned memory accesses.
Make it right before you make it faster.
            - The Elements of Programming Style (Kernighan & Plauger)

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