Date: Mon, 30 Aug 2010 17:42:32 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: usb@FreeBSD.org Subject: Porting an USB software from linux (libusb) Message-ID: <20100830174232.56765zlyg2rhuhgc@webmail.leidinger.net>
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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)?
Here is the related source:
---snip---
devh = usb_open(dev);
assert(devh);
signal(SIGTERM, release_usb_device);
ret = usb_get_driver_np(devh, 0, buf, sizeof(buf));
printf("usb_get_driver_np returned %d\n", ret);
if (ret == 0) {
printf("interface 0 already claimed by driver
\\'%s\\', attempting to detach it\n", buf);
ret = usb_detach_kernel_driver_np(devh, 0);
printf("usb_detach_kernel_driver_np returned %d\n", ret);
}
ret = usb_claim_interface(devh, 0);
if (ret != 0) {
printf("claim failed with error %d\n", ret);
exit(1);
}
ret = usb_set_altinterface(devh, 0);
---snip---
Bye,
Alexander.
--
Famous last words:
http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
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