From 4aa05bd4ffb8148787bbcaa8780c9c522eb61b13 Mon Sep 17 00:00:00 2001
From: Carlos O'Ryan <coryan@google.com>
Date: Wed, 6 Dec 2017 15:33:27 -0500
Subject: [PATCH] Only switch to g++-4.9 on Linux.

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 68acbd36..797c2898 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@
 
 install:
 # /usr/bin/gcc is 4.6 always, but gcc-X.Y is available.
-- if [ "$CXX" = "g++" ]; then export CXX="g++-4.9" CC="gcc-4.9"; fi
+- if [ "$CXX" = "g++" ] && [ "$TRAVIS_OS_NAME" = "linux" ]; then export CXX="g++-4.9" CC="gcc-4.9"; fi
 # /usr/bin/clang is 3.4, lets override with modern one.
 - if [ "$CXX" = "clang++" ] && [ "$TRAVIS_OS_NAME" = "linux" ]; then export CXX="clang++-3.7" CC="clang-3.7"; ln -sf /usr/bin/ccache /$HOME/bin/$CXX; ln -sf /usr/bin/ccache /$HOME/bin/$CC; fi
 # ccache on OS X needs installation first