Min. libusb version is 0.1.8.

ChangeLog

@@ -1,3 +1,7 @@
+2005-08-17  Henning Meier-Geinitz <henning@meier-geinitz.de>
+
+	* README: Min. libusb version is 0.1.8.
+
 2005-08-17  Julien Blache <jb@jblache.org>
 	* tools/hotplug/libsane.usermap: Added USB IDs for the
 	sm3600-supported scanners. If you know the exact model name

README

@@ -42,7 +42,7 @@ In order to build SANE, the following tools and libraries are required:
 Some more libraries are not strictly necessary to compile SANE, but some
 functionality may be lost if they are not available:
         
-        - libusb (>=0.1.6): Strongly recommended if you use a USB scanner.
+        - libusb (>=0.1.8): Strongly recommended if you use a USB scanner.
           Some backends won't work without libusb at all.
 
         - libjpeg (>=6B): For the dc210, dc240, and gphoto2 backends.