It's important to read C compiler errors from top to bottom.  Don't
 even bother reading the lower messages until you understand and
 correct the upper ones.  Follow the line numbers listed in the errors.

 So, it appears to me that you are missing linux/mod_devicetable.h -
 line 4 of usb.h includes it.  That's the first error.

 The messages above that are there you help find why the compiler ran
 into an error - USBDAQ.h line 36 inlcudes USBDAQSample.h.  Line 36 of
 USBDAQSample includes USB.h.  Line 4 of usb.h attempts to include
 linux/mod_devicetable.h which apparently doesn't exist anywhere that
 the compiler knows to look for it.

 It's very useful to use an editor that readily displays the line
 number that the cursor is on.  Vim (vi, gvim) and emacs (xemacs) do
 this directly.


 Matt-

 mod_devicetable.h is in the same directory I chose for usb.h

 See the attached jpg.

 Paul Lamar


The path to usb.h that the compiler is using is /usr/include/usb.h -
as stated by the error message.  I'm pretty sure the compiler is
following the precedence of include paths.  It doesn't appear that
there's a "linux" dir in any of your included dirs.  You specifically
included which usb.h to use, but that doesn't help to find
linux/mod_devicetable.h ..


Matt-

Yes there is Matt. Look at the fine print on top and bottom
of this jpg I sent.

Then compare that with the parameters in the gcc command line.
I think they match.

Paul Lamar