From a8342b1de22c32db1e606da0bac09b9e74770737 Mon Sep 17 00:00:00 2001
From: Douglas Katzman <dougk@google.com>
Date: Thu, 12 Oct 2017 13:07:41 -0400
Subject: [PATCH] Add cautionary note above enablement of :sb-thread on darwin

---
 make-config.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/make-config.sh b/make-config.sh
index f0f101832..b11909cb3 100755
--- a/make-config.sh
+++ b/make-config.sh
@@ -435,6 +435,9 @@ else
     case $sbcl_arch in
         x86|x86-64|arm64)
             case $sbcl_os in
+    # Be aware that if you use multiple threads on Darwin,
+    # it works well enough when threads don't interact much, but
+    # you might encounter https://bugs.launchpad.net/sbcl/+bug/901441
                 linux|darwin)
                     WITH_FEATURES="$WITH_FEATURES :sb-thread"
             esac
-- 
2.11.4.GIT