1 files changed, 53 insertions, 0 deletions
diff --git a/m4/macros/check_mnt2_udf_opt.m4 b/m4/macros/check_mnt2_udf_opt.m4
new file mode 100644
index 000000000000..80e381136392
--- /dev/null
+++ b/m4/macros/check_mnt2_udf_opt.m4
@@ -0,0 +1,53 @@
+dnl ######################################################################
+dnl Find UDF-specific mount(2) options (hex numbers)
+dnl Usage: AMU_CHECK_MNT2_UDF_OPT(<fs>)
+dnl Check if there is an entry for MS_<fs> or M_<fs> in sys/mntent.h or
+dnl mntent.h, then define MNT2_UDF_OPT_<fs> to the hex number.
+AC_DEFUN([AMU_CHECK_MNT2_UDF_OPT],
+[
+# what name to give to the fs
+ac_fs_name=$1
+# store variable name of fs
+ac_upcase_fs_name=`echo $ac_fs_name | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ac_safe=MNT2_UDF_OPT_$ac_upcase_fs_name
+# check for cache and set it if needed
+AMU_CACHE_CHECK_DYNAMIC(for UDF-specific mount(2) option $ac_fs_name,
+ac_cv_mnt2_udf_opt_$ac_fs_name,
+[
+# undefine by default
+eval "ac_cv_mnt2_udf_opt_$ac_fs_name=notfound"
+value=notfound
+
+# XXX - tests for other systems need to be added here!
+
+# if failed, try UDFMNT_* as a hex (netbsd systems)
+if test "$value" = notfound
+then
+AMU_EXPAND_CPP_HEX(
+AMU_MOUNT_HEADERS
+, UDFMNT_$ac_upcase_fs_name)
+fi
+
+# set cache variable to value
+eval "ac_cv_mnt2_udf_opt_$ac_fs_name=$value"
+])
+# outside cache check, if ok, define macro
+ac_tmp=`eval echo '$''{ac_cv_mnt2_udf_opt_'$ac_fs_name'}'`
+if test "${ac_tmp}" != notfound
+then
+  AC_DEFINE_UNQUOTED($ac_safe, $ac_tmp)
+fi
+])
+dnl ======================================================================
+
+dnl ######################################################################
+dnl run AMU_CHECK_MNT2_UDF_OPT on each argument given
+dnl Usage: AMU_CHECK_MNT2_UDF_OPTS(arg arg arg ...)
+AC_DEFUN([AMU_CHECK_MNT2_UDF_OPTS],
+[
+for ac_tmp_arg in $1
+do
+AMU_CHECK_MNT2_UDF_OPT($ac_tmp_arg)
+done
+])
+dnl ======================================================================