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# Use Gnulib's robust chdir function.
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# It can handle arbitrarily long directory names, which means
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# that when it is given the name of an existing directory, it
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# never fails with ENAMETOOLONG.
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# Arrange to compile chdir-long.c only on systems that define PATH_MAX.
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dnl Copyright (C) 2004-2007, 2009-2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Written by Jim Meyering.
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AC_DEFUN([gl_FUNC_CHDIR_LONG],
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AC_CACHE_CHECK([whether this system has an arbitrary file name length limit],
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gl_cv_have_arbitrary_file_name_length_limit,
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[AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
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#if defined PATH_MAX || defined MAXPATHLEN
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have_arbitrary_file_name_length_limit
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gl_cv_have_arbitrary_file_name_length_limit=yes,
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gl_cv_have_arbitrary_file_name_length_limit=no)])
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if test $gl_cv_have_arbitrary_file_name_length_limit = yes; then
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AC_LIBOBJ([chdir-long])
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AC_DEFUN([gl_PREREQ_CHDIR_LONG],
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AC_REQUIRE([AC_C_INLINE])