_posixsubprocess.c: don't redefine _GNU_SOURCE if it's already defined

5572ba7e · Victor Stinner · 77af1729 · 5572ba7e
Commit 5572ba7e authored May 26, 2011 by Victor Stinner
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Modules/_posixsubprocess.c Modules/_posixsubprocess.c +2 -2

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--- a/Modules/_posixsubprocess.c
+++ b/Modules/_posixsubprocess.c
 /* Authors: Gregory P. Smith & Jeffrey Yasskin */
 #include "Python.h"
-#ifdef HAVE_PIPE2
-#define _GNU_SOURCE
+#if defined(HAVE_PIPE2) && !defined(_GNU_SOURCE)
+# define _GNU_SOURCE
 #endif
 #include <unistd.h>
 #include <fcntl.h>