pkg-monitoring-plugins/gl/m4/dos.m4

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#serial 11 -*- autoconf -*-
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# Define some macros required for proper operation of code in lib/*.c
# on MSDOS/Windows systems.
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# Copyright (C) 2000-2001, 2004-2006, 2009-2010 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# From Jim Meyering.
AC_DEFUN([gl_AC_DOS],
[
AC_CACHE_CHECK([whether system is Windows or MSDOS], [ac_cv_win_or_dos],
[
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __CYGWIN__
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neither MSDOS nor Windows
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#endif]])],
[ac_cv_win_or_dos=yes],
[ac_cv_win_or_dos=no])
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])
if test x"$ac_cv_win_or_dos" = xyes; then
ac_fs_accepts_drive_letter_prefix=1
ac_fs_backslash_is_file_name_separator=1
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AC_CACHE_CHECK([whether drive letter can start relative path],
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[ac_cv_drive_letter_can_be_relative],
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
#if defined __CYGWIN__
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drive letters are always absolute
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#endif]])],
[ac_cv_drive_letter_can_be_relative=yes],
[ac_cv_drive_letter_can_be_relative=no])
])
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if test x"$ac_cv_drive_letter_can_be_relative" = xyes; then
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ac_fs_drive_letter_can_be_relative=1
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else
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ac_fs_drive_letter_can_be_relative=0
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fi
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else
ac_fs_accepts_drive_letter_prefix=0
ac_fs_backslash_is_file_name_separator=0
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ac_fs_drive_letter_can_be_relative=0
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fi
AC_DEFINE_UNQUOTED([FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX],
$ac_fs_accepts_drive_letter_prefix,
[Define on systems for which file names may have a so-called
`drive letter' prefix, define this to compute the length of that
prefix, including the colon.])
AH_VERBATIM(ISSLASH,
[#if FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
#else
# define ISSLASH(C) ((C) == '/')
#endif])
AC_DEFINE_UNQUOTED([FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR],
$ac_fs_backslash_is_file_name_separator,
[Define if the backslash character may also serve as a file name
component separator.])
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AC_DEFINE_UNQUOTED([FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE],
$ac_fs_drive_letter_can_be_relative,
[Define if a drive letter prefix denotes a relative path if it is
not followed by a file name component separator.])
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])