From 1cbc93fb54b773d1564bf2f2194d81c02a985a81 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Sat, 14 Nov 2009 18:51:37 +0000
Subject: Refactor how preprocessor symbol _THREAD_SAFE definition is done.

---
 src/setup.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/setup.h')

diff --git a/src/setup.h b/src/setup.h
index 9120af174..36fde516f 100644
--- a/src/setup.h
+++ b/src/setup.h
@@ -68,6 +68,17 @@
 
 #endif /* HAVE_CONFIG_H */
 
+/*
+ * AIX 4.3 and newer needs _THREAD_SAFE defined to build
+ * proper reentrant code. Others may also need it.
+ */
+
+#ifdef NEED_THREAD_SAFE
+#  ifndef _THREAD_SAFE
+#    define _THREAD_SAFE
+#  endif
+#endif
+
 /*
  * Tru64 needs _REENTRANT set for a few function prototypes and
  * things to appear in the system header files. Unixware needs it
-- 
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