Fix compilation of step-70.

I'm not sure how this ever worked.

diff --git a/examples/step-70/step-70.cc b/examples/step-70/step-70.cc
index 4614479898e5b23e1962a5741d18907ce5bde10f..592b401b01192a77fc60590daef936c480998623 100644 (file)
--- a/examples/step-70/step-70.cc
+++ b/examples/step-70/step-70.cc
@@ -143,6 +143,8 @@ namespace LA
 #  include <TopoDS.hxx>
 #endif
 
+#include <boost/algorithm/string/case_conv.hpp>
+
 #include <cmath>
 #include <fstream>
 #include <iostream>