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1#serial 9
2
3# Define some macros required for proper operation of code in lib/*.c
4# on MSDOS/Windows systems.
5
6# Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc.
7# This file is free software; the Free Software Foundation
8# gives unlimited permission to copy and/or distribute it,
9# with or without modifications, as long as this notice is preserved.
10
11# From Jim Meyering.
12
13AC_DEFUN([gl_AC_DOS],
14 [
15 AC_CACHE_CHECK([whether system is Windows or MSDOS], [ac_cv_win_or_dos],
16 [
17 AC_TRY_COMPILE([],
18 [#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __CYGWIN__
19neither MSDOS nor Windows
20#endif],
21 [ac_cv_win_or_dos=yes],
22 [ac_cv_win_or_dos=no])
23 ])
24
25 if test x"$ac_cv_win_or_dos" = xyes; then
26 ac_fs_accepts_drive_letter_prefix=1
27 ac_fs_backslash_is_file_name_separator=1
28 else
29 ac_fs_accepts_drive_letter_prefix=0
30 ac_fs_backslash_is_file_name_separator=0
31 fi
32
33 AH_VERBATIM(FILE_SYSTEM_PREFIX_LEN,
34 [#if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX
35# define FILE_SYSTEM_PREFIX_LEN(Filename) \
36 ((Filename)[0] && (Filename)[1] == ':' ? 2 : 0)
37#else
38# define FILE_SYSTEM_PREFIX_LEN(Filename) 0
39#endif])
40
41 AC_DEFINE_UNQUOTED([FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX],
42 $ac_fs_accepts_drive_letter_prefix,
43 [Define on systems for which file names may have a so-called
44 `drive letter' prefix, define this to compute the length of that
45 prefix, including the colon.])
46
47 AH_VERBATIM(ISSLASH,
48 [#if FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR
49# define ISSLASH(C) ((C) == '/' || (C) == '\\')
50#else
51# define ISSLASH(C) ((C) == '/')
52#endif])
53
54 AC_DEFINE_UNQUOTED([FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR],
55 $ac_fs_backslash_is_file_name_separator,
56 [Define if the backslash character may also serve as a file name
57 component separator.])
58 ])