Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/dos.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/dos.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/dos.m4 (revision 0) |
@@ -0,0 +1,71 @@ |
+#serial 10 -*- autoconf -*- |
+ |
+# Define some macros required for proper operation of code in lib/*.c |
+# on MSDOS/Windows systems. |
+ |
+# Copyright (C) 2000, 2001, 2004, 2005, 2006 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([gl_AC_DOS], |
+ [ |
+ AC_CACHE_CHECK([whether system is Windows or MSDOS], [ac_cv_win_or_dos], |
+ [ |
+ AC_TRY_COMPILE([], |
+ [#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"$ac_cv_win_or_dos" = xyes; then |
+ ac_fs_accepts_drive_letter_prefix=1 |
+ ac_fs_backslash_is_file_name_separator=1 |
+ AC_CACHE_CHECK([whether drive letter can start relative path], |
+ [ac_cv_drive_letter_can_be_relative], |
+ [ |
+ AC_TRY_COMPILE([], |
+ [#if defined __CYGWIN__ |
+drive letters are always absolute |
+#endif], |
+ [ac_cv_drive_letter_can_be_relative=yes], |
+ [ac_cv_drive_letter_can_be_relative=no]) |
+ ]) |
+ if test x"$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.]) |
+ ]) |