I am trying to set different app icon sets for different schemes in Xcode (for an app exclusively for iOS). I have an xcconfig file for dev, test, and prod. In my Development.xcconfig I have the following.
ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon-dev
And correspondingly in the files for test and prod. In my assets folder I have the AppIcon-dev icon set etc. I have created build configuration for the different xcconfig files and have connected them to different schemes. But when I try building the project I get the follwing error.
error build: Command CompileAssetCatalog failed with a nonzero exit code
If I change the icon set name back to just AppIcon, the error goes away and I can build the project. Even though I still have the ASSETCATALOG_COMPILER_APPICON_NAME variable set to AppIcon-dev in the xcconfig file (and I have activated the dev scheme).
Do I need to do anything else to get it to work with different icon sets? I know that I can set the icon set names for different build configuration under Build Settings > Primary App Icon Set Name, but then what is the point of having the xcconfig file if I need to define the icon set names in two different places?
To set up the xcconfig files, I followed this guide: https://pewpewthespells.com/blog/xcconfig_guide.html