--- configure.org	2006-04-25 00:21:33.000000000 -0700
+++ configure	2006-04-25 00:27:22.000000000 -0700
@@ -3401,8 +3401,8 @@
     ;;
 esac
 
-TCL_LIB_DIR="${TCL_SRC_DIR}/$blt_platform"
-TK_LIB_DIR="${TK_SRC_DIR}/$blt_platform"
+TCL_LIB_DIR="${prefix}/lib"
+TK_LIB_DIR="${prefix}/lib"
 
 if test "x${blt_with_tcl_libraries}" != "x" ; then
   for libname in \
