Update osx-instructions.md

add 10.12 Sierra as minimal needed version and add some more notes for pkg-config.

diff --git a/Documentation/building/osx-instructions.md b/Documentation/building/osx-instructions.md
index 9e6b913..2ea5d02 100644 (file)
--- a/Documentation/building/osx-instructions.md
+++ b/Documentation/building/osx-instructions.md
@@ -6,7 +6,7 @@ This guide will walk you through building CoreCLR on OS X. We'll start by showin
 Environment
 ===========
 
-These instructions were validated on OS X Yosemite, although they probably work on earlier versions. Pull Requests are welcome to address other environments.
+These instructions were validated on macOS 1-.12. Sierra. On older versions coreFX will fail to build properly becasue of SSL API changes.
 
 If your machine has Command Line Tools for XCode 6.3 installed, you'll need to update them to the 6.3.1 version or higher in order to successfully build. There was an issue with the headers that shipped with version 6.3 that was subsequently fixed in 6.3.1.
 
@@ -70,8 +70,15 @@ ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/
 ln -s /usr/local/opt/openssl/lib/pkgconfig/libcrypto.pc /usr/local/lib/pkgconfig/
 ln -s /usr/local/opt/openssl/lib/pkgconfig/libssl.pc /usr/local/lib/pkgconfig/
 ln -s /usr/local/opt/openssl/lib/pkgconfig/openssl.pc /usr/local/lib/pkgconfig/
+
+# Check pkg-config configuration
+pkg-config --libs openssl
+
+it should show something like '-L/usr/local/Cellar/openssl/1.0.2k/lib -lssl -lcrypto'
+If pkg-config is not found, run 'brew install pkg-config'
 ```
 
+
 Build the Runtime and Microsoft Core Library
 ============================================