# Test whether a file descriptor is a pipe.
-dnl Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2014 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_DEFUN([gl_ISAPIPE],
[
# OpenVMS has isapipe already, so check for it.
- AC_REPLACE_FUNCS([isapipe])
- if test $ac_cv_func_isapipe = no; then
- gl_PREREQ_ISAPIPE
+ AC_CHECK_FUNCS([isapipe])
+ if test $ac_cv_func_isapipe = yes; then
+ HAVE_ISAPIPE=1
+ else
+ HAVE_ISAPIPE=0
fi
])