Is it possible to connect and use Objective-C code through Swift Package Manager?

Swift Package Manager (SPM) is primarily designed for Swift and C/C++ code. Support for Objective-C in SPM is limited and not direct, as SPM cannot automatically create bridging headers for Objective-C.

However, you can use Objective-C code in a Swift Package if:

• The package contains Objective-C source files (.m and .h files).
• The Package.swift file specifies the appropriate settings to include Objective-C files.
• The Swift code uses modular imports, and the Objective-C files are properly exported through a module.

Example of a minimal Package.swift configuration for Objective-C:

// swift-tools-version:5.3
import PackageDescription

let package = Package(
    name: "MyPackage",
    targets: [
        .target(
            name: "MyPackage",
            dependencies: [],
            path: "Sources",
            publicHeadersPath: "include"
        )
    ]
)

In the Sources/MyPackage folder, there should be Objective-C files and headers in the include folder.

Thus, it is possible to connect and use Objective-C code via Swift Package Manager, but with limitations and additional configuration. For more complex projects, CocoaPods or Carthage are often used, which better support Objective-C.