Index: xmlrpc_config.h.in
===================================================================
--- xmlrpc_config.h.in	(revision 2387)
+++ xmlrpc_config.h.in	(working copy)
@@ -26,6 +26,10 @@
 #ifndef XMLRPC_CONFIG_H_INCLUDED
 #define XMLRPC_CONFIG_H_INCLUDED
 
+#if defined(__FreeBSD__)
+  #include <sys/cdefs.h>
+#endif
+
 /* We hope to replace xmlrpc_amconfig.h some day with something that 
    doesn't require a whole special set of software to build, to make
    Xmlrpc-c approachable by dumber developers.