| 1 | #serial 10 -*- autoconf -*-
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| 2 |
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| 3 | # Define some macros required for proper operation of code in lib/*.c
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| 4 | # on MSDOS/Windows systems.
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| 5 |
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| 6 | # Copyright (C) 2000, 2001, 2004, 2005, 2006 Free Software Foundation, Inc.
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| 7 | # This file is free software; the Free Software Foundation
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| 8 | # gives unlimited permission to copy and/or distribute it,
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| 9 | # with or without modifications, as long as this notice is preserved.
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| 10 |
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| 11 | # From Jim Meyering.
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| 12 |
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| 13 | AC_DEFUN([gl_AC_DOS],
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| 14 | [
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| 15 | AC_CACHE_CHECK([whether system is Windows or MSDOS], [ac_cv_win_or_dos],
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| 16 | [
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| 17 | AC_TRY_COMPILE([],
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| 18 | [#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __CYGWIN__
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| 19 | neither MSDOS nor Windows
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| 20 | #endif],
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| 21 | [ac_cv_win_or_dos=yes],
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| 22 | [ac_cv_win_or_dos=no])
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| 23 | ])
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| 24 |
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| 25 | if test x"$ac_cv_win_or_dos" = xyes; then
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| 26 | ac_fs_accepts_drive_letter_prefix=1
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| 27 | ac_fs_backslash_is_file_name_separator=1
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| 28 | AC_CACHE_CHECK([whether drive letter can start relative path],
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| 29 | [ac_cv_drive_letter_can_be_relative],
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| 30 | [
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| 31 | AC_TRY_COMPILE([],
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| 32 | [#if defined __CYGWIN__
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| 33 | drive letters are always absolute
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| 34 | #endif],
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| 35 | [ac_cv_drive_letter_can_be_relative=yes],
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| 36 | [ac_cv_drive_letter_can_be_relative=no])
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| 37 | ])
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| 38 | if test x"$ac_cv_drive_letter_can_be_relative" = xyes; then
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| 39 | ac_fs_drive_letter_can_be_relative=1
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| 40 | else
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| 41 | ac_fs_drive_letter_can_be_relative=0
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| 42 | fi
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| 43 | else
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| 44 | ac_fs_accepts_drive_letter_prefix=0
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| 45 | ac_fs_backslash_is_file_name_separator=0
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| 46 | ac_fs_drive_letter_can_be_relative=0
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| 47 | fi
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| 48 |
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| 49 | AC_DEFINE_UNQUOTED([FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX],
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| 50 | $ac_fs_accepts_drive_letter_prefix,
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| 51 | [Define on systems for which file names may have a so-called
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| 52 | `drive letter' prefix, define this to compute the length of that
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| 53 | prefix, including the colon.])
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| 54 |
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| 55 | AH_VERBATIM(ISSLASH,
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| 56 | [#if FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR
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| 57 | # define ISSLASH(C) ((C) == '/' || (C) == '\\')
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| 58 | #else
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| 59 | # define ISSLASH(C) ((C) == '/')
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| 60 | #endif])
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| 61 |
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| 62 | AC_DEFINE_UNQUOTED([FILE_SYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR],
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| 63 | $ac_fs_backslash_is_file_name_separator,
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| 64 | [Define if the backslash character may also serve as a file name
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| 65 | component separator.])
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| 66 |
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| 67 | AC_DEFINE_UNQUOTED([FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE],
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| 68 | $ac_fs_drive_letter_can_be_relative,
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| 69 | [Define if a drive letter prefix denotes a relative path if it is
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| 70 | not followed by a file name component separator.])
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| 71 | ])
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