From aa0b4abc9d663a237c7783c2dd8c736a6c2f7343 Mon Sep 17 00:00:00 2001
From: cybai <cyb.ai.815@gmail.com>
Date: Sun, 7 Apr 2019 22:21:05 +0900
Subject: [PATCH] Add a note to indicate PKG_CONFIG_PATH required

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 5f07a08df0a..a38d6250aaa 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,8 @@ export OPENSSL_LIB_DIR="$(brew --prefix openssl)/lib"
 ./mach build ...
 ```
 
+##### Note: Please make sure the required `PKG_CONFIG_PATH` environment variable is set the same as the one provided from `brew info libffi` ([Check this comment for more details](https://github.com/servo/servo/issues/23015#issuecomment-475050175)).
+
 If you've already partially compiled servo but forgot to do this step, run `./mach clean`, set the shell variables, and recompile.
 
 #### On Debian-based Linuxes