UnityXcodeCache

Simply setup cache for Unity generated Xcode project to speed up build times.

Usage

1. Clone repository into Unity Editor folder.
2. Execute Tools/Xcode/WriteCache before build Xcode project.
3. Build Xcode project.
4. Execute Tools/Xcode/ReadCache after build Xcode project.
5. Open Xcode and build, build will use previous build cache to speed up

Introduction

The principle is simple:

1. Copy whole Xcode project to Cache folder and preserve all timestamps. Cause Xcode use file and directory timestamp to decide whether to use cache.
2. Use Unity to generate Xcode project
3. Depth-first traverse Xcode project and compare file with cached, set timestamp to cached if they are equal.

Environment

• Unity 2017.4.2f2
• Xcode 9.4.1
• macOS 10.13.6

It didn't use any special trick, so it should compatible with all Unity, macOS and Xcode versions.