diff options
Diffstat (limited to 'm4/dos.m4')
| -rw-r--r-- | m4/dos.m4 | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/m4/dos.m4 b/m4/dos.m4 new file mode 100644 index 000000000000..868626e7e594 --- /dev/null +++ b/m4/dos.m4 @@ -0,0 +1,53 @@ +#serial 5 + +# Define some macros required for proper operation of code in lib/*.c +# on MSDOS/Windows systems. + +# From Jim Meyering. + +AC_DEFUN([jm_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__ +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 + else + ac_fs_accepts_drive_letter_prefix=0 + ac_fs_backslash_is_file_name_separator=0 + fi + + AH_VERBATIM(FILESYSTEM_PREFIX_LEN, + [#if FILESYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX +# define FILESYSTEM_PREFIX_LEN(Filename) \ + ((Filename)[0] && (Filename)[1] == ':' ? 2 : 0) +#else +# define FILESYSTEM_PREFIX_LEN(Filename) 0 +#endif]) + + AC_DEFINE_UNQUOTED([FILESYSTEM_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 FILESYSTEM_BACKSLASH_IS_FILE_NAME_SEPARATOR +# define ISSLASH(C) ((C) == '/' || (C) == '\\') +#else +# define ISSLASH(C) ((C) == '/') +#endif]) + + AC_DEFINE_UNQUOTED([FILESYSTEM_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.]) + ]) |