Try new libusb include dir

external/CMakeLists.txt

@@ -1460,7 +1460,7 @@ if (WIN32 OR APPLE)
             set(LIBXML2_LIBRARIES "${EXTERNAL_BUILD_LIBRARIES}/libxml2/lib/libxml2.a" CACHE INTERNAL "")
         endif ()
         if (WIN32)
-            set(IIO_LIBUSB_INCLUDE_DIR ${LIBUSB_INCLUDE_DIR})
+            set(IIO_LIBUSB_INCLUDE_DIR ${LIBUSB_INCLUDE_DIR}/libusb-1.0)
         else ()
             set(IIO_LIBUSB_INCLUDE_DIR ${LIBUSB_INCLUDE_DIR}/..)
         endif ()