I have an error compiling the qc-usb-0.6.6 on my raspberry pi (raspbian; linux 3.6.11+): it says "fatal error: linux/autoconf.h: file not found" for every time there is an include of that file.
fatal error: linux/autoconf.h: file not found
After a Google search, I found that it was because the file autoconf.h is located under generated/autoconf.h.
I replaced all the occurrences of linux/autoconf.h on qc-driver.c, quickcam.h etc... by:
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
Same thing for videodev.h