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-rw-r--r--src/buildtool/common/tree.hpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/buildtool/common/tree.hpp b/src/buildtool/common/tree.hpp
index 73d4f30b..6e066c75 100644
--- a/src/buildtool/common/tree.hpp
+++ b/src/buildtool/common/tree.hpp
@@ -16,12 +16,16 @@
#define INCLUDED_SRC_BUILDTOOL_COMMON_TREE_HPP
#include <memory>
+#include <optional>
#include <string>
#include <unordered_map>
+#include <utility>
#include "nlohmann/json.hpp"
+#include "src/buildtool/common/action.hpp"
#include "src/buildtool/common/action_description.hpp"
#include "src/buildtool/common/artifact_description.hpp"
+#include "src/buildtool/crypto/hash_function.hpp"
// Describes tree, its inputs, output (tree artifact), and action (tree action).
class Tree {