| 1 | #serial 9
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| 2 |
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| 3 | # Use Gnulib's robust chdir function.
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| 4 | # It can handle arbitrarily long directory names, which means
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| 5 | # that when it is given the name of an existing directory, it
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| 6 | # never fails with ENAMETOOLONG.
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| 7 | # Arrange to compile chdir-long.c only on systems that define PATH_MAX.
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| 8 |
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| 9 | dnl Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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| 10 | dnl This file is free software; the Free Software Foundation
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| 11 | dnl gives unlimited permission to copy and/or distribute it,
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| 12 | dnl with or without modifications, as long as this notice is preserved.
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| 13 |
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| 14 | # Written by Jim Meyering.
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| 15 |
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| 16 | AC_DEFUN([gl_FUNC_CHDIR_LONG],
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| 17 | [
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| 18 | AC_CACHE_CHECK([whether this system has an arbitrary file name length limit],
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| 19 | gl_cv_have_arbitrary_file_name_length_limit,
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| 20 | [AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
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| 21 | [#include <unistd.h>
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| 22 | #include <limits.h>
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| 23 | #if defined PATH_MAX || defined MAXPATHLEN
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| 24 | have_arbitrary_file_name_length_limit
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| 25 | #endif],
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| 26 | gl_cv_have_arbitrary_file_name_length_limit=yes,
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| 27 | gl_cv_have_arbitrary_file_name_length_limit=no)])
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| 28 |
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| 29 | if test $gl_cv_have_arbitrary_file_name_length_limit = yes; then
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| 30 | AC_LIBOBJ([chdir-long])
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| 31 | gl_PREREQ_CHDIR_LONG
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| 32 | fi
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| 33 | ])
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| 34 |
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| 35 | AC_DEFUN([gl_PREREQ_CHDIR_LONG],
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| 36 | [
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| 37 | AM_STDBOOL_H
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| 38 | gl_FUNC_MEMPCPY
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| 39 | gl_FUNC_OPENAT
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| 40 | gl_FUNC_MEMRCHR
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| 41 | ])
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