From 8c4d6bbba68d0913ae4a7ec3beefea0e9ff4d8ea Mon Sep 17 00:00:00 2001
From: Pavel Sanda <sanda@lyx.org>
Date: Tue, 14 Jan 2020 21:59:05 +0100
Subject: [PATCH] endl needs ostream header here.

---
 src/boost.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/boost.cpp b/src/boost.cpp
index ce1fb27abd..646d4e4dfb 100644
--- a/src/boost.cpp
+++ b/src/boost.cpp
@@ -18,6 +18,7 @@
 
 #include <exception>
 #include <iomanip>
+#include <ostream>
 
 using namespace std;
 using lyx::lyxerr;