Re: [Qemu-devel] [PATCH RFC 2/2] qemu-img: migrate to use qemu-arg

[Peter Maydell]

On 9 March 2014 12:37, Leandro Dorileo <address@hidden> wrote:
> Hi Paolo,
>
> On Sun, Mar 09, 2014 at 08:30:28AM +0100, Paolo Bonzini wrote:
>> Il 08/03/2014 19:47, Leandro Dorileo ha scritto:
>> >Remove the arg parsing implementations using getopt and use qemu-arg.
>> >Also remove the qemu-img-cmds.hx since it's now generated on building time,
>> >adapted the build system to generate the .hx file using the qemu-img itself
>> >using the qemu-arg internal command generate-hx.
>> >
>> >Signed-off-by: Leandro Dorileo <address@hidden>
>>
>> This makes it much harder to cross-compile QEMU.
>
> What's non-portable in this case? what would limit the QEMU cross-compile?

qemu-img is a binary for the target system; it can't run at all
on the host system, so you can't run it during compilation.
You need to keep "things we do during build" completely
separate from the runtime binaries.

thanks
-- PMM