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[gnulib.git] / m4 / close.m4

diff --git a/m4/close.m4 b/m4/close.m4
index b1189f5..a6623a3 100644 (file)
--- a/m4/close.m4
+++ b/m4/close.m4
@@ -1,4 +1,4 @@
-# close.m4 serial 3
+# close.m4 serial 4
 dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,6 +9,9 @@ AC_DEFUN([gl_FUNC_CLOSE],
   m4_ifdef([gl_PREREQ_SYS_H_WINSOCK2], [
     gl_PREREQ_SYS_H_WINSOCK2
     if test $UNISTD_H_HAVE_WINSOCK2_H = 1; then
+      dnl Even if the 'socket' module is not used here, another part of the
+      dnl application may use it and pass file descriptors that refer to
+      dnl sockets to the close() function. So enable the support for sockets.
       gl_REPLACE_CLOSE
     fi
   ])