use the more modern _POSIX_C_SOURCE instead of older _POSIX_SOURCE

1 files changed, 8 insertions, 1 deletions

diff --git a/liolib.c b/liolib.c
index f61e1823..95b74795 100644
--- a/liolib.c
+++ b/liolib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 2.28 2002/12/04 17:38:31 roberto Exp roberto $
+** $Id: liolib.c,v 2.29 2002/12/20 10:26:33 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -28,6 +28,13 @@
 */
 
 
+#ifdef _POSIX_C_SOURCE
+#if _POSIX_C_SOURCE >= 2
+#define USE_POPEN
+#endif
+#endif
+
+
 #ifndef USE_POPEN
 #define pclose(f)    (-1)
 #endif