diff -urNp libical-0.41.orig/configure libical-0.41/configure
--- libical-0.41.orig/configure	2009-01-08 00:38:26.000000000 +0530
+++ libical-0.41/configure	2009-01-08 00:43:43.000000000 +0530
@@ -20519,17 +20519,17 @@ fi;
 
 
 cat >>confdefs.h <<\_ACEOF
-#define ICAL_ERRORS_ARE_FATAL 1
+#define ICAL_ERRORS_ARE_FATAL 0
 _ACEOF
 
 
 cat >>confdefs.h <<\_ACEOF
-#define NO_WARN_DEPRECATED 1
+#define NO_WARN_DEPRECATED 0
 _ACEOF
 
 
 cat >>confdefs.h <<\_ACEOF
-#define NO_WARN_ICAL_MALFORMEDDATA_ERROR_HACK 1
+#define NO_WARN_ICAL_MALFORMEDDATA_ERROR_HACK 0
 _ACEOF