From 0b406754fa6c5d90e54d55f992045bde45f447ea Mon Sep 17 00:00:00 2001
From: Artem Krylysov <kadotex@gmail.com>
Date: Thu, 1 Jun 2017 12:21:48 -0400
Subject: [PATCH] Fix C API header compatibility with C compilers (#44)

---
 include/rabit/c_api.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/rabit/c_api.h b/include/rabit/c_api.h
index 16db693b4..a05ebd4d2 100644
--- a/include/rabit/c_api.h
+++ b/include/rabit/c_api.h
@@ -11,6 +11,7 @@
 #define RABIT_EXTERN_C extern "C"
 #include <cstdio>
 #else
+#define RABIT_EXTERN_C
 #include <stdio.h>
 #endif