1 files changed, 4 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index 841ade4315..1da256973c 100644
--- a/intern.h
+++ b/intern.h
@@ -400,6 +400,10 @@ void rb_gc_mark_trap_list _((void));
 #ifdef POSIX_SIGNAL
 #define posix_signal ruby_posix_signal
 void posix_signal _((int, RETSIGTYPE (*)(int)));
+#ifdef HAVE_NATIVETHREAD
+#define posix_nativethread_signal ruby_posix_nativethread_signal
+void posix_nativethread_signal _((int, RETSIGTYPE (*)(int)));
+#endif
 #endif
 void rb_trap_exit _((void));
 void rb_trap_exec _((void));