diff -up sane-backends-1.0.18/configure.in.pint sane-backends-1.0.18/configure.in
--- sane-backends-1.0.18/configure.in.pint	2007-10-02 10:00:41.000000000 +0200
+++ sane-backends-1.0.18/configure.in	2007-10-02 10:08:49.000000000 +0200
@@ -406,7 +406,14 @@ else
   fi
 
   if test "${ac_cv_header_sys_scanio_h}" = "no"; then
-    echo "*** disabling PINT backend (sys/scanio.h not found)"
+    case "$host_os" in
+    *bsd*)
+      echo "*** disabling PINT backend (sys/scanio.h not found)"
+      ;;
+    *)
+      BACKENDS="${BACKENDS} pint"
+      ;;
+    esac
   else
     BACKENDS="${BACKENDS} pint"
   fi