Compilation on MacOS with clang

[u/mrichter/AliRoot.git] / TEvtGen / THepMCParser.h

diff --git a/TEvtGen/THepMCParser.h b/TEvtGen/THepMCParser.h
index 03d73c57cd7b3a2005acb910ca8fcd7415ca6b96..1d4625800a41f6fcb66bf96ecc79a5413cb762d9 100644 (file)
--- a/TEvtGen/THepMCParser.h
+++ b/TEvtGen/THepMCParser.h
@@ -8,11 +8,15 @@
 #include <string>
 #include <list>
 #include <set>
-#include "HepMC/IO_GenEvent.h"
 #include "TTree.h"
 #include "TClonesArray.h"
 #include "TParticle.h"
 
+namespace HepMC {
+  class IO_BaseClass;
+  class GenVertex;
+  class GenEvent;
+}
 
 class THepMCParser {