--- configure.ac.orig	2014-02-01 10:35:47.000000000 +0400
+++ configure.ac	2014-02-15 18:30:35.000000000 +0400
@@ -21,8 +21,8 @@
 AC_REPLACE_FUNCS(mmap)
 
 # Checks for libraries.
-PKG_CHECK_MODULES(USB, libusb-1.0 >= 1.0.0,,
-                 AC_MSG_ERROR([*** Required libusb-1.0 >= 1.0.0 not installed ***]))
+LIBS="$LIBS -lusb"
+
 AC_CHECK_LIB([usbpath],[usb_path2devnum],,,-lusb)
 
 LIBS="$LIBS $USB_LIBS"