Quickest way to add Carthage in Xcode Project

Question

What is quickest way to add dependencies in Xcode project using Carthage.

How to add or edit dependencies later.

Answer 1

1. Installing Carthage

   //Homebrew
   brew install carthage
   

2. Create Cartfile file at the project(.xcodeproj)/workspace(.xcworkspace) directory

3. Modify Cartfile. Add necessary dependency == repo

   github "/" == 
   

4. Run carthage update. High level logic:

   `carthage update [dependency]` {
       - reads `Cartfile`, resolves dependency graph and generates `Cartfile.resolved` to store a list of versions that will be actually built
   
       //--no-use-binaries - this flag force a Carthage to not use a `Prebuilt framework`
       //--no-build - this flag skip a building step - `carthage build`
   
       `carthage bootstrap [dependency]` {
           - reads `Cartfile.resolved`
           `carthage checkout [dependency]` {
               `carthage fetch ` {
                   - fetch dependency from `Cartfile.resolved` into `~/Library/Caches/org.carthage.CarthageKit/` folder
               }
               - checkout/move a dependency from `~/Library/Caches/org.carthage.CarthageKit/` to generated `Carthage/Checkouts` folder
           }
           `carthage build [dependency]` {                
               - builds all `shared frameworks schemes` from `Carthage/Checkouts` into generated `Carthage/Build` folder
   
               //--no-skip-current - this flag also builds all `shared frameworks schemes` of a consumer workspace/project(in addition to `Carthage/Checkouts` folder)
           }
       }
   }   
   

5. Drag and drop builded frameworks to General -> Frameworks and Libraries

6. Run the next script. This step is important because carthage build process a fat binary(arm64... + x86_64) using lipo[About]. Apple reject application which uses it. That is why you should add this extra step to cut architecture for simulator(x86_64)

   Build Phases -> + -> New Run Script phase -> 
   
       // /usr/local/bin/carthage - path to Carthage, copy-frameworks - command which sets a necessary architecture and copies framework to an application bundle
       Shell -> /usr/local/bin/carthage copy-frameworks
   
       //path to a generated Carthage/Build
       Input files -> + -> $(SRCROOT)/Carthage/Build//.framework
   

*Any carthage command should be called from Cartfile folder

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