diff -Nurd -x'*~' OpenSP-1.5.2.orig/lib/MessageTable.cxx OpenSP-1.5.2/lib/MessageTable.cxx
--- OpenSP-1.5.2.orig/lib/MessageTable.cxx	2005-07-21 10:05:17.000000000 -0400
+++ OpenSP-1.5.2/lib/MessageTable.cxx	2011-03-12 17:02:31.000000000 -0500
@@ -94,12 +94,7 @@
 #else /* not SP_NO_MESSAGE_TEXT */
 
 #ifdef SP_HAVE_GETTEXT
-extern "C" {
-extern char *dgettext(const char *, const char *);
-extern char *gettext(const char *);
-extern char *textdomain(const char *);
-extern char *bindtextdomain(const char *, const char *);
-}
+#include <libintl.h>
 
 #include <stdlib.h>