Add CacheWriter.
diff --git a/lib/bcc/Script.h b/lib/bcc/Script.h
index 8f16de5..8b3beef 100644
--- a/lib/bcc/Script.h
+++ b/lib/bcc/Script.h
@@ -112,7 +112,7 @@
                            BCCvoid **base,
                            BCCsizei *length);
 
-    char const *getContext() const;
+    char *getContext();
 
     void registerSymbolCallback(BCCSymbolLookupFn pFn, BCCvoid *pContext);