From 3be64b69f20b2ca47689d62c970b60aa520d2f49 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Wed, 2 Aug 1995 18:39:47 +0000
Subject: [PATCH] (sigblock, SIG_BLOCK): Don't define them if POSIX_SIGNALS.

---
 src/s/isc4-0.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/s/isc4-0.h b/src/s/isc4-0.h
index a52e0d821ef..379772abbef 100644
--- a/src/s/isc4-0.h
+++ b/src/s/isc4-0.h
@@ -19,9 +19,11 @@
 /* Tobias Herbert <herbert@clipper.ikp.physik.th-darmstadt.de>
    says this is needed.  */
 
+#ifndef POSIX_SIGNALS
 #ifndef sigblock
 #ifndef SIG_BLOCK
 #define SIG_BLOCK 0
 #endif
 #define sigblock(sig) (sigprocmask (SIG_BLOCK, SIGEMPTYMASK | sig, NULL))
 #endif
+#endif /* not POSIX_SIGNALS */
-- 
2.39.2