--- tk/unix/Makefile.in.orig	2012-04-18 00:37:08 UTC
+++ tk/unix/Makefile.in
@@ -41,7 +41,7 @@ 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)
 
 # Directory from which applications will reference the library of Tcl
 # scripts (note: you can set the TK_LIBRARY environment variable at