https://github.com/Perl/perl5/issues/21042

--- BSD-Resource-1.2911/Resource.xs.orig
+++ BSD-Resource-1.2911/Resource.xs
@@ -11,6 +11,7 @@
 #endif
 #define PERL_NO_GET_CONTEXT
 #include "EXTERN.h"
+#define HAS_SYSCALL_PROTO
 #include "perl.h"
 #include "XSUB.h"
 #include "ppport.h"