diff -r -u libksba-1.0.8-old/src/asn1-gentables.c libksba-1.0.8-new/src/asn1-gentables.c
--- libksba-1.0.8-old/src/asn1-gentables.c	2010-05-06 10:29:03 +0000
+++ libksba-1.0.8-new/src/asn1-gentables.c	2010-09-09 14:18:32 +0000
@@ -338,7 +338,11 @@
       FILE *nullfp;
 
       /* We first parse it to /dev/null to build up the string table.  */
+#ifdef _WIN32
+      nullfp = fopen ("nul", "w");
+#else
       nullfp = fopen ("/dev/null", "w");
+#endif
       if (!nullfp)
         {
           print_error ("can't open `/dev/null': %s\n", strerror (errno));