[tarantool-patches] [tarantool-msgpuck] Enable 0069 policy

[AKhatskevich <avkhatskevich@tarantool.org>]

From: AKhatskevich <avkhatskevich@gmail.com>

Without this policy cmake >= 3.9 produces warnings when its parent
project uses LTO.
---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c129b77..9e41751 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,12 @@
 project(msgpuck)
 cmake_minimum_required(VERSION 2.8.5)
 
+# Avoid warnings when building with cmake>=3.9 and LTO is enabled in parent
+# project.
+if(NOT CMAKE_VERSION VERSION_LESS 3.9)
+    cmake_policy(SET CMP0069 NEW)
+endif()
+
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -fPIC -fstrict-aliasing")
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wextra -Werror")
 
-- 
2.14.1