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README_SETUP_MACOS.md

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Setup Engine - macOS

(Setup instructions for the editor here).

Required Software

Required Software - Java JDK 11

You need Java JDK 11 installed to build the tools. Download and install release 11.0.1 from OpenJDK. When Java is installed you may also add need to add java to your PATH and export JAVA_HOME:

> nano ~/.bashrc

export JAVA_HOME=<JAVA_INSTALL_PATH>
export PATH=$JAVA_HOME/bin:$PATH

Verify that Java is installed and working:

> javac -version

Required Software - Python 2

You need a 64 bit Python 2 version (x86_64) to build the engine and tools. The latest tested on all platforms is Python 2.7.16. Big Sur comes with both Python 2.7.16 and pip installed. On Big Sur Python is a universal binary (x86_64 + arm64), and there's no guarantuee which version it will pick. Using the x86_64 version is a requirement for our tools to work (we load shared libraries, which we build for x86_64).

For older versions of macOS you may need to install using Brew:

> brew install python2

Required Software - macOS

You need the dos2unix command line tool to convert line endings of certain source files when building files in share/ext. You can install dos2unix using Brew:

> brew install dos2unix

Optional Software

It is recommended but not required that you install the following software:

  • wget + curl - for downloading packages
  • 7z - for extracting packages (archives and binaries)
  • ccache - for faster compilations of source code
  • cmake for easier building of external projects
  • patch for easier patching on windows (when building external projects)
  • ripgrep for faster search

Quick and easy install:

> brew install wget curl p7zip ccache ripgrep

Configure ccache by running (source)

> /usr/local/bin/ccache --max-size=5G

Optional Setup

Optional Setup - Command Prompt

It's useful to modify your command prompt to show the status of the repo you're in. E.g. it makes it easier to keep the git branches apart.

You do this by editing the PS1 variable. Put it in the recommended config for your system (e.g. .profile or .bashrc) Here's a very small improvement on the default prompt, whic shows you the time of the last command, as well as the current git branch name and its status:

git_branch() {
    git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
}
acolor() {
  [[ -n $(git status --porcelain=v2 2>/dev/null) ]] && echo 31 || echo 33
}
export PS1='\t \[\033[32m\]\w\[\033[$(acolor)m\] $(git_branch)\[\033[00m\] $ '