Index: acinclude.m4
--- acinclude.m4.orig
+++ acinclude.m4
@@ -351,16 +351,6 @@ AC_DEFUN([SANE_CHECK_LOCKING],
                      [use the specified group for lock dir @<:@default=uucp@:>@]),
         [LOCKPATH_GROUP="$withval"]
     )
-    # check if the group does exist
-    lasterror=""
-    touch sanetest.file
-    chgrp $LOCKPATH_GROUP sanetest.file 2>/dev/null || lasterror=$?
-    rm -f sanetest.file
-    if test ! -z "$lasterror"; then
-      AC_MSG_WARN([Group $LOCKPATH_GROUP does not exist on this system.])
-      AC_MSG_WARN([Locking feature will be disabled.])
-      use_locking=no
-    fi
   fi
   if test $use_locking = yes ; then
     INSTALL_LOCKPATH=install-lockpath
@@ -660,8 +650,7 @@ for be in ${BACKENDS}; do
     ;;
 
     v4l)
-    if test "${have_linux_ioctl_defines}" != "yes" \
-      || test "${have_libv4l1}" != "yes"; then
+    if test "${have_libv4l1}" != "yes"; then
       echo "*** $be backend requires v4l libraries - $DISABLE_MSG"
       backend_supported="no"
     fi
