Guide to Setting Up Native Ruby on M1 Macs

This blog post will guide you through the process of setting up native Ruby on M1 Macs. Follow these steps:

Ensure You’re Running a ‘Clean’ macOS Monterey: The newer versions of macOS have updated C compilers that can’t compile older Ruby runtimes. For this reason, it’s necessary to ensure your operating system is a ‘clean’ macOS Monterey.
Install Rosetta 2: Rosetta 2 is a translation process that enables M1 Mac applications to run software coded for Intel processors. Install it using the following command:
```
 softwareupdate --install-rosetta --agree-to-license
```
Install Xcode Command Line Tools: These are a set of utilities that software developers use to build software. You can install it with this command:
```
 xcode-select --install
```
Configure Terminal App to Run in Rosetta: If you’re using iTerm, you’ll need to set it up similarly to the Terminal app.
- Useful sources: BetterProgramming and Apple StackExchange
Install Homebrew in Rosetta Terminal: Homebrew is a package manager that simplifies the installation of software on Apple’s macOS operating system. Use the following command for installation:
```
 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```

Add Export Statements to Your .bash_profile: The following lines need to be added to your .bash_profile:

 export RUBY_CFLAGS="-Wno-error=implicit-function-declaration"
 export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES

Install rbenv with ruby-build Using Basic Git Checkout: rbenv provides support for specifying application-specific versions of Ruby. The ruby-build plugin adds rbenv install command for compiling and installing different versions of Ruby on UNIX-like systems. You can check the process here and for installing ruby-build, click here.
Install Relevant Ruby Versions in Rosetta Terminal: Use the following commands to install all necessary Ruby versions:
```
 rbenv install 2.3.8
 rbenv global 2.3.8
 gem install bundler
```
Install pg Gem: The pg gem provides an interface to the PostgreSQL RDBMS. To install it, execute these commands:
```
 brew install libpq
 gem install pg -v '0.18.4'
```

Follow this guide carefully to successfully set up native Ruby on your M1 Macs.

That's it for this post, thanks for reading!