Added additional steps for building on M1 Macs.

SPANDigital · Aug 13, 2021 · 14f88ad · 14f88ad
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diff --git a/content/_prerequisites/02-environment-setup/01-osx.md b/content/_prerequisites/02-environment-setup/01-osx.md
@@ -1,6 +1,13 @@
 ---
 title: OSX
 ---
+# Xcode
+
+Install Xcode command line tools
+```sh
+$ xcode-select --install
+```
+
 
 # NPM
 
@@ -19,4 +26,17 @@ $ brew install ruby
 # Bundler
 ```sh
 $ gem install bundler
+```
+
+# M1 Mac IMPORTANT ADDITIONAL STEPS
+
+If you are using a Mac (2020 or newer) with the M1 chipset, Ruby will need to be version 2.7.3 (recommend using RVM to install this). Also, there may be errors encountered while building the ffi library. The following commands can be run to rebuild it manually for the M1 architecture:
+```sh 
+git clone https://github.com/libffi/libffi
+cd libffi/
+./autogen.sh
+./configure
+make
+make install
+Delete libffi directory if you dont need it
 ```