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-rw-r--r--parser/rpp/pp-engine.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/parser/rpp/pp-engine.h b/parser/rpp/pp-engine.h
index 79e74c1aa..f5cbe2223 100644
--- a/parser/rpp/pp-engine.h
+++ b/parser/rpp/pp-engine.h
@@ -25,6 +25,12 @@
#ifndef PP_ENGINE_H
#define PP_ENGINE_H
+#include <string>
+#include <vector>
+#include "pp-scanner.h"
+#include "pp-macro-expander.h"
+#include "pp-environment.h"
+
namespace rpp
{