standard .h protection

diff --git a/win32/unistd.h b/win32/unistd.h
index 5604103ec95f5f636bf628dd792f51c2af0536d1..96e0aedc13475a3eb89af0f0e7b525a18b9e1174 100644 (file)
--- a/win32/unistd.h
+++ b/win32/unistd.h
@@ -1 +1,4 @@
-extern void usleep(unsigned int useconds);
+#ifndef _PHP_WIN32_UNISTD_H
+#define _PHP_WIN32_UNISTD_H
+void usleep(unsigned int useconds);
+#endif