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68 lines
1.5 KiB
Plaintext
68 lines
1.5 KiB
Plaintext
# getcwd.m4 - check for working getcwd that is compatible with glibc
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# Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# Written by Paul Eggert.
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AC_DEFUN([gl_FUNC_GETCWD_NULL],
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[
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AC_LIBSOURCES([getcwd.c, getcwd.h])
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AC_CHECK_HEADERS_ONCE(unistd.h)
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AC_CACHE_CHECK([whether getcwd (NULL, 0) allocates memory for result],
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[gl_cv_func_getcwd_null],
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[AC_TRY_RUN(
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[
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# include <stdlib.h>
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# ifdef HAVE_UNISTD_H
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# include <unistd.h>
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# endif
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# ifndef getcwd
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char *getcwd ();
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# endif
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int
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main ()
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{
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if (chdir ("/") != 0)
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exit (1);
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else
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{
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char *f = getcwd (NULL, 0);
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exit (! (f && f[0] == '/' && !f[1]));
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}
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}],
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[gl_cv_func_getcwd_null=yes],
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[gl_cv_func_getcwd_null=no],
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[gl_cv_func_getcwd_null=no])])
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])
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AC_DEFUN([gl_FUNC_GETCWD],
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[
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AC_REQUIRE([gl_FUNC_GETCWD_NULL])
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case $gl_cv_func_getcwd_null in
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yes) gl_FUNC_GETCWD_PATH_MAX;;
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esac
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case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_path_max in
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yes,yes) ;;
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*)
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AC_LIBOBJ([getcwd])
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AC_DEFINE([__GETCWD_PREFIX], [[rpl_]],
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[Define to rpl_ if the getcwd replacement function should be used.])
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gl_PREREQ_GETCWD;;
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esac
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])
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# Prerequisites of lib/getcwd.c.
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AC_DEFUN([gl_PREREQ_GETCWD],
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[
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([AC_HEADER_DIRENT])
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AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])
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:
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])
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