-# gl_LIST_MOUNTED_FILESYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-AC_DEFUN([gl_LIST_MOUNTED_FILESYSTEMS],
+# Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
+# through Autoconf 2.59. We can remove this once we assume Autoconf 2.60
+# or later.
+AC_DEFUN([AC_FUNC_GETMNTENT],
+[# getmntent is in the standard C library on UNICOS, in -lsun on Irix 4,
+# -lseq on Dynix/PTX, -lgen on Unixware.
+AC_SEARCH_LIBS(getmntent, [sun seq gen])
+AC_CHECK_FUNCS(getmntent)
+])
+
+# gl_LIST_MOUNTED_FILE_SYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+AC_DEFUN([gl_LIST_MOUNTED_FILE_SYSTEMS],