X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fdup3.m4;h=706d7261a221299f04e7f0c3c2b63deed73a5fec;hb=da8054d48dc22e1c051db54049e005d51a006e69;hp=0640ca934bbee4e280697c20daef609bb50547be;hpb=49e5954ef6b0ac412149f63da197c7bd5ca9bb6f;p=gnulib.git

diff --git a/m4/dup3.m4 b/m4/dup3.m4
index 0640ca934..706d7261a 100644
--- a/m4/dup3.m4
+++ b/m4/dup3.m4
@@ -1,5 +1,5 @@
-# dup3.m4 serial 2
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+# dup3.m4 serial 4
+dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -15,4 +15,16 @@ AC_DEFUN([gl_FUNC_DUP3],
   if test $ac_cv_func_dup3 != yes; then
     HAVE_DUP3=0
   fi
+
+dnl Not needed yet, because dup3 is unconditionally replaced.
+dnl  dnl Replace dup3() for supporting the gnulib-defined fchdir() function,
+dnl  dnl to keep fchdir's bookkeeping up-to-date.
+dnl  m4_ifdef([gl_FUNC_FCHDIR], [
+dnl    gl_TEST_FCHDIR
+dnl    if test $HAVE_FCHDIR = 0; then
+dnl      if test $HAVE_DUP3 = 1; then
+dnl        REPLACE_DUP3=1
+dnl      fi
+dnl    fi
+dnl  ])
 ])