From ca41ca8f9a6b21588248e5fee1a013363f3f52a8 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 13 Mar 2015 14:34:24 +0200
Subject: Add support for "first" and "last" execution modes

---
 build/variable | 1 +
 1 file changed, 1 insertion(+)

(limited to 'build/variable')

diff --git a/build/variable b/build/variable
index ae4c7b3..901f5c8 100644
--- a/build/variable
+++ b/build/variable
@@ -9,6 +9,7 @@
 #include <memory>        // unique_ptr
 #include <utility>       // move()
 #include <cassert>
+#include <functional>    // hash
 #include <typeindex>
 #include <unordered_set>
 
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