From c9f18c4886aae5068dcc3089f245cc834332285d Mon Sep 17 00:00:00 2001
From: Charles Dang <exodia339@gmail.com>
Date: Fri, 14 Jul 2017 12:02:59 +1100
Subject: [PATCH] Use Boost hash_fwd.hpp include instead of hash.hpp directly

Boost recommends this as the latter includes a whole bunch of other headers.
---
 src/image.cpp        | 2 +-
 src/map/location.cpp | 2 +-
 src/tstring.cpp      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/image.cpp b/src/image.cpp
index a0df811ab4d7..b35121d1c471 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -44,7 +44,7 @@
 #include "utils/functional.hpp"
 
 #include <boost/algorithm/string.hpp>
-#include <boost/functional/hash.hpp>
+#include <boost/functional/hash_fwd.hpp>
 
 #include <set>
 
diff --git a/src/map/location.cpp b/src/map/location.cpp
index b54f2b57248d..e08435a1aa6c 100644
--- a/src/map/location.cpp
+++ b/src/map/location.cpp
@@ -27,7 +27,7 @@
 #include "log.hpp"
 #include "utils/math.hpp"
 
-#include <boost/functional/hash.hpp>
+#include <boost/functional/hash_fwd.hpp>
 
 static lg::log_domain log_config("config");
 #define ERR_CF LOG_STREAM(err, log_config)
diff --git a/src/tstring.cpp b/src/tstring.cpp
index 6fcc6bfa397c..db2488c12826 100644
--- a/src/tstring.cpp
+++ b/src/tstring.cpp
@@ -25,7 +25,7 @@
 #include "tstring.hpp"
 #include "gettext.hpp"
 #include "log.hpp"
-#include <boost/functional/hash.hpp>
+#include <boost/functional/hash_fwd.hpp>
 
 #include <boost/multi_index_container.hpp>
 #include <boost/multi_index/hashed_index.hpp>