diff --git a/ChangeLog b/ChangeLog
index 514b4045..99e6c867 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-12-09  Albert Chin-A-Young  <china@thewrittenword.com>
+
+	* config/ltmain.m4sh: Preserve -model [arg] option, used
+	with the Tru64 UNIX C++ compiler. This option selects the
+	layout of C++ classes, name mangling, and exception handling.
+
 2004-12-09  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* config/ltmain.m4sh (func_mode_finish) [solaris]: Fix [] escaping bug.
diff --git a/config/ltmain.m4sh b/config/ltmain.m4sh
index 64a8f0eb..1e5cca60 100644
--- a/config/ltmain.m4sh
+++ b/config/ltmain.m4sh
@@ -2632,6 +2632,16 @@ func_mode_link ()
 	continue
 	;;
 
+      # Tru64 UNIX uses -model [arg] to determine the layout of C++
+      # classes, name mangling, and exception handling.
+      -model)
+	compile_command="$compile_command $arg"
+	compiler_flags="$compiler_flags $arg"
+	finalize_command="$finalize_command $arg"
+	prev=xcompiler
+	continue
+	;;
+
       -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe)
 	deplibs="$deplibs $arg"
 	continue