From 9f910b506e60b16c5ad8ba606f1004a7bac18f2a Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Mon, 7 Jul 1997 19:05:34 +0000
Subject: [PATCH] [sigmask] (SIGEMPTYMASK): Define to use sigmask.

---
 src/syssignal.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/syssignal.h b/src/syssignal.h
index 2645d9a82c9..23a15c6c1d2 100644
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -51,7 +51,14 @@ extern sigset_t sys_sigmask ();
 
 #ifndef sigpause
 #define sigpause(SIG)    sys_sigpause (SIG)
+#else
+/* If sigpause is predefined, with POSIX_SIGNALS,
+   let's assume it needs this kind of argument.
+   This is true for Glibc 2.1.  */
+#undef SIGEMPTYMASK
+#define SIGEMPTYMASK sigmask (0)
 #endif
+
 #define sigblock(SIG)    sys_sigblock (SIG)
 #define sigunblock(SIG)  sys_sigunblock (SIG)
 #ifndef sigsetmask
-- 
2.39.2