3 files changed, 12 insertions, 5 deletions
diff --git a/include/gras/block.hpp b/include/gras/block.hpp
index 25d2993..30d7ce4 100644
--- a/include/gras/block.hpp
+++ b/include/gras/block.hpp
@@ -182,9 +182,9 @@ struct GRAS_API Block : Element
      * Deal with tag handling and tag configuration
      ******************************************************************/
 
-    uint64_t nitems_read(const size_t which_input);
+    item_index_t nitems_read(const size_t which_input);
 
-    uint64_t nitems_written(const size_t which_output);
+    item_index_t nitems_written(const size_t which_output);
 
     //! Send a tag to the downstream on the given output port
     void post_output_tag(const size_t which_output, const Tag &tag);
diff --git a/include/gras/gras.hpp b/include/gras/gras.hpp
index bbeffba..ebf1d75 100644
--- a/include/gras/gras.hpp
+++ b/include/gras/gras.hpp
@@ -37,6 +37,8 @@
   #endif
 #endif
 
+#define GRAS_DLL //always build a dll
+
 // Now we use the generic helper definitions above to define GRAS_API and GRAS_LOCAL.
 // GRAS_API is used for the public API symbols. It either DLL imports or DLL exports (or does nothing for static build)
 // GRAS_LOCAL is used for non-api symbols.
@@ -66,4 +68,10 @@
     #define GRAS_FORCE_INLINE         inline
 #endif
 
+namespace gras
+{
+    //! Typedef for absolute item indexes
+    typedef unsigned long long item_index_t;
+}
+
 #endif /*INCLUDED_GRAS_GRAS_HPP*/
diff --git a/include/gras/tags.hpp b/include/gras/tags.hpp
index 9faa667..169957c 100644
--- a/include/gras/tags.hpp
+++ b/include/gras/tags.hpp
@@ -20,7 +20,6 @@
 #include <gras/gras.hpp>
 #include <boost/operators.hpp>
 #include <PMC/PMC.hpp>
-#include <boost/cstdint.hpp>
 
 namespace gras
 {
@@ -31,10 +30,10 @@ struct GRAS_API Tag : boost::less_than_comparable<Tag>
     Tag(void);
 
     //! Make a tag from parameters to initialize the members
-    Tag(const uint64_t &offset, const PMCC &key, const PMCC &value, const PMCC &srcid = PMCC());
+    Tag(const item_index_t &offset, const PMCC &key, const PMCC &value, const PMCC &srcid = PMCC());
 
     //! the absolute item count associated with this tag
-    boost::uint64_t offset;
+    item_index_t offset;
 
     //! A symbolic name identifying the type of tag
     PMCC key;