--- tcl/unix/Makefile.in.orig	2012-04-18 00:36:36 UTC
+++ tcl/unix/Makefile.in
@@ -38,7 +38,7 @@ mandir			= @mandir@
 # to be different than those used for actually reference files at
 # run-time.  INSTALL_ROOT is prepended to $prefix and $exec_prefix
 # when installing files.
-INSTALL_ROOT		=
+INSTALL_ROOT		= $(DESTDIR)
 
 # Path for the platform independent Tcl scripting libraries:
 # REDHAT LOCAL