From bf4367184164e593cd2856ef38f8dd4f8cc76999 Mon Sep 17 00:00:00 2001
From: Zhirui Wang <576572949@qq.com>
Date: Fri, 5 Jan 2018 03:28:26 +0800
Subject: [PATCH] update macOS gcc@5 installation guide (#3003)

After installing ``gcc@5``, ``CMAKE_C_COMPILER`` will not be set to gcc-5 in some macOS environment automatically and the installation of xgboost will still fail. Manually setting the compiler will solve the problem.
---
 python-package/README.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/python-package/README.rst b/python-package/README.rst
index cee08c39f..96ad6a555 100644
--- a/python-package/README.rst
+++ b/python-package/README.rst
@@ -26,6 +26,11 @@ Please install ``gcc@5`` from `Homebrew <https://brew.sh/>`_::
 
     brew install gcc@5
 
+After installing ``gcc@5``, set it as your compiler::
+
+    export CC = gcc-5
+    export CXX = g++-5
+
 Linux
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