diff --git a/rdcost-weight-tool/build.sh b/rdcost-weight-tool/build.sh
new file mode 100755
index 00000000..68fecfee
--- /dev/null
+++ b/rdcost-weight-tool/build.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+gcc -O2 filter_rdcosts.c -o ../src/frcosts_matrix
+gcc -O2 ols_2ndpart.c -o ../src/ols_2ndpart
diff --git a/src/extract_rdcosts.py b/rdcost-weight-tool/extract_rdcosts.py
similarity index 100%
rename from src/extract_rdcosts.py
rename to rdcost-weight-tool/extract_rdcosts.py
diff --git a/src/filter_rdcosts.c b/rdcost-weight-tool/filter_rdcosts.c
similarity index 100%
rename from src/filter_rdcosts.c
rename to rdcost-weight-tool/filter_rdcosts.c
diff --git a/src/ols_2ndpart.c b/rdcost-weight-tool/ols_2ndpart.c
similarity index 100%
rename from src/ols_2ndpart.c
rename to rdcost-weight-tool/ols_2ndpart.c
diff --git a/src/rdcost_do_avg.py b/rdcost-weight-tool/rdcost_do_avg.py
similarity index 100%
rename from src/rdcost_do_avg.py
rename to rdcost-weight-tool/rdcost_do_avg.py
diff --git a/src/run_filter.py b/rdcost-weight-tool/run_filter.py
similarity index 100%
rename from src/run_filter.py
rename to rdcost-weight-tool/run_filter.py