--- misc/raptor-1.4.18/configure.ac
+++ misc/build/raptor-1.4.18/configure.ac
@@ -295,7 +295,9 @@
   return is_c99("1234567");
 }], AC_MSG_RESULT(no),
     AC_DEFINE(HAVE_C99_VSNPRINTF, 1, [vsnprint has C99 compatible return value])
-    AC_MSG_RESULT(yes))
+    AC_MSG_RESULT(yes),
+    AC_DEFINE(HAVE_C99_VSNPRINTF, 1, [vsnprint has C99 compatible return value])
+    AC_MSG_RESULT([guessing yes]))
 fi

 need_libm=no
@@ -456,7 +458,8 @@
             AC_DEFINE(EXPAT_UTF8_BOM_CRASH, 1, [does expat crash when it sees an initial UTF8 BOM?])
             AC_MSG_RESULT(no)
             AC_MSG_WARN(The available expat crashes on XML UTF-8 BOM in documents)
-            AC_MSG_WARN(Fix either by using libxml or expat 1.95.2+))
+            AC_MSG_WARN(Fix either by using libxml or expat 1.95.2+),
+	    AC_MSG_RESULT(guessing yes))

   else
     AC_MSG_RESULT(no)