Porting an USB software from linux (libusb)

[Hans Petter Selasky]

On Monday 30 August 2010 17:42:32 Alexander Leidinger wrote:
> Hi,
> 
> I try to port a linux userland USB program and I get the following
> error message when trying to link to libusb (current as of r210105):
> ---snip---
> cc -lusb -lm -o fowsr  fowsr.o
> 
> fowsr.o(.text+0x1546): In function `CUSB_Open':
> : undefined reference to `usb_get_driver_np'
> 
> fowsr.o(.text+0x1710): In function `CUSB_Open':
> : undefined reference to `usb_detach_kernel_driver_np'
> 
> gmake: *** [fowsr] Fehler 1
> ---snip---
> 
> Do I need those functions on FreeBSD (the device may show up as a HID
> device, I hadn't a chance to attach it to a FreeBSD box yet), or can I
> just remove them (I could make sure the HID driver is not loaded in
> the kernel)?


Hi,

I've added these missing functions to LibUSB in USB P4 change 183086.

Consider adding a compile time check for the existence of these functions. 
They are marked non-portable in LibUSB.

--HPS