-# serial 1
+#serial 11 -*- autoconf -*-
# Define some macros required for proper operation of code in lib/*.c
# on MSDOS/Windows systems.
+# Copyright (C) 2000-2001, 2004-2006, 2009-2010 Free Software Foundation, Inc.
+# 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(jm_AC_DOS,
+AC_DEFUN([gl_AC_DOS],
[
- # FIXME: this is incomplete. Add a compile-test that does something
- # like this:
- #if defined _WIN32 || defined __WIN32__ || defined __MSDOS__
-
- ac_fspl_def="((Filename)[0] && (Filename)[1] == ':' ? 2 : 0)"
- ac_fspl_def=0
- AC_DEFINE_UNQUOTED([FILESYSTEM_PREFIX_LEN(Filename)], $ac_fspl_def,
- [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. Otherwise, define it to zero.])
-
- ac_isslash_def="((C) == '/' || (C) == '\\')"
- ac_isslash_def="((C) == '/')"
- AC_DEFINE_UNQUOTED([ISSLASH(C)], $ac_isslash_def,
- [Define to return nonzero for any character that may serve as
- a file name component separator. On POSIX systems, it is the
- slash character. Some other systems also accept backslash.])
+ AC_CACHE_CHECK([whether system is Windows or MSDOS], [ac_cv_win_or_dos],
+ [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
+#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __CYGWIN__
+neither MSDOS nor Windows
+#endif]])],
+ [ac_cv_win_or_dos=yes],
+ [ac_cv_win_or_dos=no])
+ ])
+
+ if test x"$ac_cv_win_or_dos" = xyes; then
+ ac_fs_accepts_drive_letter_prefix=1
+ ac_fs_backslash_is_file_name_separator=1
+ AC_CACHE_CHECK([whether drive letter can start relative path],
+ [ac_cv_drive_letter_can_be_relative],
+ [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
+#if defined __CYGWIN__
+drive letters are always absolute
+#endif]])],
+ [ac_cv_drive_letter_can_be_relative=yes],
+ [ac_cv_drive_letter_can_be_relative=no])
+ ])
+ if test x"$ac_cv_drive_letter_can_be_relative" = xyes; then
+ ac_fs_drive_letter_can_be_relative=1
+ else
+ ac_fs_drive_letter_can_be_relative=0
+ fi
+ else
+ ac_fs_accepts_drive_letter_prefix=0
+ ac_fs_backslash_is_file_name_separator=0
+ ac_fs_drive_letter_can_be_relative=0
+ 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.])
+
+ 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.])
])