Adopting Configuration Settings Files in Xcode

By John Daub on Feb 05, 2019


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Manage Multiple Build Settings By Harnessing the Power of xcconfig Files

Modern app development continues to grow in complexity. We have many targets in our Xcode project - the app, extensions, frameworks, unit tests – and each has their own myriad of build settings. As project complexity grows, it becomes increasingly difficult to manage the target build settings, especially since we want to keep those settings synchronized and consistent.

Xcode supports Configuration Settings Files, also known as build configuration files, or sometimes simply “xcconfig” files -- which is their filename extension.

A Configuration Settings File is a plain text file that defines build settings for a particular build configuration of a project or target. This type of file can be edited outside of Xcode and integrates well with source control systems. It also gives us the power to tame the complexity beast of project and target build settings.

In this screencast, we will explore how to use Xcode’s Configuration Settings Files - or xcconfig files - and improve our ability to tame the complexity of managing project settings.

Questions we'll answer in this screencast:

- What is an xcconfig file?
- What is a build configuration file?
- What is an Xcode configuration settings file?
- How can I manage my project build settings?
- How can I manage my target build settings?
- Is there an easier way to work with (manage) Xcode project/target build settings?

Basic knowledge or experience building iOS applications is recommended.

For the More Curious...

Add a Build Configuration (xcconfig) File
Configuration Settings File (xcconfig) Format Reference
The Unofficial Guide to xcconfig Files
BNR Guide to iOS
BNR Guide to Swift
iOS & Swift Courses

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