-#serial 13
+#serial 16
dnl Copyright (C) 2002, 2005, 2007, 2009-2011 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_CHECK_FUNCS_ONCE([dup2])
if test $ac_cv_func_dup2 = no; then
HAVE_DUP2=0
- AC_LIBOBJ([dup2])
fi
], [
AC_DEFINE([HAVE_DUP2], [1], [Define to 1 if you have the 'dup2' function.])
esac])
])
if test "$gl_cv_func_dup2_works" = no; then
- gl_REPLACE_DUP2
+ REPLACE_DUP2=1
fi
fi
+ dnl Replace dup2() for supporting the gnulib-defined fchdir() function,
+ dnl to keep fchdir's bookkeeping up-to-date.
+ m4_ifdef([gl_FUNC_FCHDIR], [
+ gl_TEST_FCHDIR
+ if test $HAVE_FCHDIR = 0; then
+ REPLACE_DUP2=1
+ fi
+ ])
])
-AC_DEFUN([gl_REPLACE_DUP2],
-[
- AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
- AC_CHECK_FUNCS_ONCE([dup2])
- if test $ac_cv_func_dup2 = yes; then
- REPLACE_DUP2=1
- fi
- AC_LIBOBJ([dup2])
-])
+# Prerequisites of lib/dup2.c.
+AC_DEFUN([gl_PREREQ_DUP2], [])