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a504db1780
Revamp wording and local variables to suggest the intended function of the PATH_MAX check.
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
#serial 7
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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, 2005 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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[
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AC_LIBSOURCES([chdir-long.c, chdir-long.h])
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AC_CACHE_CHECK([whether this system has an arbitrary file name length limit],
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gl_have_arbitrary_file_name_length_limit,
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[AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
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[#include <unistd.h>
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#include <limits.h>
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#if defined PATH_MAX || defined MAXPATHLEN
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have_arbitrary_file_name_length_limit
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#endif],
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gl_have_arbitrary_file_name_length_limit=yes,
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gl_have_arbitrary_file_name_length_limit=no)])
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if test $gl_have_arbitrary_file_name_length_limit = yes; then
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AC_LIBOBJ([chdir-long])
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gl_PREREQ_CHDIR_LONG
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fi
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])
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AC_DEFUN([gl_PREREQ_CHDIR_LONG],
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[
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AM_STDBOOL_H
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gl_FUNC_MEMPCPY
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gl_FUNC_OPENAT
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gl_FUNC_MEMRCHR
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])
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