Include pyconfig.h in Python.h and define _GNU_SOURCE

Author: fangerer

graalpython/com.oracle.graal.python.cext/include/Python.h

@@ -41,6 +41,8 @@
 #ifndef Py_PYTHON_H
 #define Py_PYTHON_H
 
+#include "pyconfig.h"
+
 #define HAVE_UTIME_H
 #define HAVE_UNISTD_H
 #define HAVE_SIGNAL_H

graalpython/com.oracle.graal.python.cext/include/pyconfig.h

@@ -69,6 +69,11 @@
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
 
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
 # ifndef UINT_MAX
 #define UINT_MAX __UINT32_MAX__
 #endif