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-rw-r--r--m4/macros/check_amu_fs.m440
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diff --git a/m4/macros/check_amu_fs.m4 b/m4/macros/check_amu_fs.m4
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+dnl ######################################################################
+dnl check if an automounter filesystem exists (it almost always does).
+dnl Usage: AC_CHECK_AMU_FS(<fs>, <msg>, [<depfs>])
+dnl Print the message in <msg>, and declare HAVE_AMU_FS_<fs> true.
+dnl If <depfs> is defined, then define this filesystem as tru only of the
+dnl filesystem for <depfs> is true.
+AC_DEFUN([AMU_CHECK_AMU_FS],
+[
+# store variable name of fs
+ac_upcase_am_fs_name=`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ac_safe=HAVE_AMU_FS_$ac_upcase_am_fs_name
+# check for cache and set it if needed
+AMU_CACHE_CHECK_DYNAMIC(for $2 filesystem ($1),
+ac_cv_am_fs_$1,
+[
+# true by default
+eval "ac_cv_am_fs_$1=yes"
+# if <depfs> exists but is defined to "no", set this filesystem to no.
+if test -n "$3"
+then
+ # flse by default if arg 3 was supplied
+ eval "ac_cv_am_fs_$1=no"
+ if test "`eval echo '$''{ac_cv_fs_'$3'}'`" = yes
+ then
+ eval "ac_cv_am_fs_$1=yes"
+ fi
+ # some filesystems do not have a mnttab entry, but exist based on headers
+ if test "`eval echo '$''{ac_cv_fs_header_'$3'}'`" = yes
+ then
+ eval "ac_cv_am_fs_$1=yes"
+ fi
+fi
+])
+# check if need to define variable
+if test "`eval echo '$''{ac_cv_am_fs_'$1'}'`" = yes
+then
+ AC_DEFINE_UNQUOTED($ac_safe)
+fi
+])
+dnl ======================================================================