Re: [Qemu-devel] git master: usb-host needs additional parameters - no documentation which

[Erik Rull <erik.rull@rdsoftware.de>]

Erik Rull wrote:
> Hi Gerd,
>
> I only have libusb (0.1 and 1.0) installed. Is there a chance to get an
> error message a bit earlier - or a warning that the usb-host support was
> disabled? configure doesn't print out a libusb - disabled message when not
> passing the libusb-parameter.
>
> I tried now explicitly with --enable-libusb - fails :-(
> I would like to point to a different version of libusb - my built machine
> has the sources for the latest libusb but not in the location where it is
> expected for a standard distribution...
> My target system has this library available but there I can't compile, so
> qemu should run there.
>
> I'm really interested getting qemu running again, but I'm running from
> trouble to trouble now for more than 4 weeks - python, ACPI, USB,...
>
> Thanks.
>
> Best regards,
>
> Erik
>
>
>
>
> Gerd Hoffmann wrote:
>> On Di, 2013-11-26 at 15:52 +0100, Erik Rull wrote:
>>> Hi all,
>>>
>>> when using the latest GIT master qemu fails with the following error:
>>> qemu-system-x86_64: -device usb-host,bus=ehci.0: Parameter 'driver' expects
>>> device type
>>
>> Any chance you don't have libusbx-devel installed and qemu is therefore
>> built without usb-host support?
>>
>> cheers,
>>    Gerd
>>
>>
>
>

Just a thought:
Snippet from configure:

         libusb_cflags=$($pkg_config --cflags libusb-1.0)
         libusb_libs=$($pkg_config --libs libusb-1.0)
         QEMU_CFLAGS="$QEMU_CFLAGS $libusb_cflags"
         libs_softmmu="$libs_softmmu $libusb_libs"

Is it possible to expose the two libusb_ variables to a 
configure-parameter? This would be sufficient for me to compile qemu with 
the parameters I need. I don't have the package installed but the includes 
and libs are present on the build machine and the lib is available on the 
target machine.

Best regards,

Erik