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-rw-r--r--m4/dup2.m410
1 files changed, 1 insertions, 9 deletions
diff --git a/m4/dup2.m4 b/m4/dup2.m4
index 31af8044d..bf8524e14 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,4 +1,4 @@
-#serial 3
+#serial 4
dnl Copyright (C) 2002, 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -7,12 +7,4 @@ dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_DUP2],
[
AC_REPLACE_FUNCS(dup2)
- if test $ac_cv_func_dup2 = no; then
- gl_PREREQ_DUP2
- fi
-])
-
-# Prerequisites of lib/dup2.c.
-AC_DEFUN([gl_PREREQ_DUP2], [
- AC_CHECK_HEADERS_ONCE(unistd.h)
])