From 6a0c925d9dc9f520f1caa67d4bbf472ccec29d4f Mon Sep 17 00:00:00 2001
From: Paul Rouget <me@paulrouget.com>
Date: Mon, 1 Apr 2019 13:32:17 +0200
Subject: [PATCH] README: Specify Xcode version.

Fix #21792
---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 3b6245ce995..5f07a08df0a 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,9 @@ Please select your operating system:
 * [Android](#cross-compilation-for-android)
 
 #### macOS
+
+Xcode version 10.2 or above is recommended.
+
 ##### On macOS (homebrew)
 
 ``` sh