3 # Use Gnulib's robust chdir function.
4 # It can handle arbitrarily long directory names, which means
5 # that when it is given the name of an existing directory, it
6 # never fails with ENAMETOOLONG.
7 # Arrange to compile chdir-long.c only on systems that define PATH_MAX.
9 dnl Copyright (C) 2004-2007, 2009-2020 Free Software Foundation, Inc.
10 dnl This file is free software; the Free Software Foundation
11 dnl gives unlimited permission to copy and/or distribute it,
12 dnl with or without modifications, as long as this notice is preserved.
14 # Written by Jim Meyering.
16 AC_DEFUN([gl_FUNC_CHDIR_LONG],
18 AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
19 AC_CACHE_CHECK([whether this system supports file names of any length],
20 [gl_cv_have_unlimited_file_name_length],
21 [AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
24 have_arbitrary_file_name_length_limit
26 [gl_cv_have_unlimited_file_name_length=no],
27 [gl_cv_have_unlimited_file_name_length=yes])])
30 AC_DEFUN([gl_PREREQ_CHDIR_LONG], [:])