Re: [PATCH] migrate VMs between different-endian hosts

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On 04/14/2011 11:50 AM, Stefan Berger wrote:
>>> +++ libvirt-acl/src/qemu/qemu_driver.c
>>> @@ -43,6 +43,7 @@
>>>   #include<sys/wait.h>
>>>   #include<sys/ioctl.h>
>>>   #include<sys/un.h>
>>> +#include<byteswap.h>
>> This won't work unless you also modify bootstrap.conf to include the
>> gnulib byteswap module.
>>
>> ACK with that nit fixed.
>>
> I don't think it's necessary to include it there:
> 
> # rpm -q --whatprovides /usr/include/byteswap.h
> glibc-headers-2.12.90-21.x86_64

Not all the world is glibc.  BSD and mingw lack byteswap.h, and qemu
compiles on more than just Linux.  While I'm not sure if any non-Linux
hosts default to compiling the qemu driver at the current moment, that
does not mean that we should not be thinking about the portability
aspects.  Adding a one-liner inclusion of the byteswap module to
bootstrap.conf will avoid any questions of portability pitfalls.

-- 
Eric Blake   eblake@xxxxxxxxxx    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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