Add an option to skip project generation for binary targets (vs throwing an error)

Sources/CreateXCFramework/Command+Options.swift

@@ -77,6 +77,8 @@ extension Command {
         @Flag(help: .hidden)
         var githubAction: Bool = false
 
+        @Flag(help: "Skip binary targets for project generation. Useful for creating and distributing a library from one Package.swift")
+        var skipBinaryTargets: Bool = false
 
         // MARK: - Targets
 

Sources/CreateXCFramework/PackageInfo.swift

@@ -147,7 +147,7 @@ struct PackageInfo {
 
         // check the graph for binary targets
         let binary = self.graph.allTargets.filter { $0.type == .binary }
-        if binary.isEmpty == false {
+        if !options.skipBinaryTargets, binary.isEmpty == false {
             errors.append(.containsBinaryTargets(binary.map(\.name)))
         }
 

Sources/CreateXCFramework/ProjectGenerator.swift

@@ -84,7 +84,8 @@ struct ProjectGenerator {
             extraFiles: [],
             options: XcodeprojOptions (
                 xcconfigOverrides: (self.package.overridesXcconfig?.path).flatMap { try AbsolutePath(validating: $0) },
-                useLegacySchemeGenerator: true
+                useLegacySchemeGenerator: true,
+                skipBinaryTargets: package.options.skipBinaryTargets
             ),
             fileSystem: localFileSystem,
             observabilityScope: self.package.observabilitySystem.topScope
@@ -97,7 +98,8 @@ struct ProjectGenerator {
             extraFiles: [],
             options: XcodeprojOptions (
                 xcconfigOverrides: (self.package.overridesXcconfig?.path).flatMap { AbsolutePath($0) },
-                useLegacySchemeGenerator: true
+                useLegacySchemeGenerator: true,
+                skipBinaryTargets: package.options.skipBinaryTargets
             ),
             diagnostics: self.package.diagnostics
         )

Sources/Xcodeproj/generate.swift

@@ -45,20 +45,24 @@ public struct XcodeprojOptions {
     /// Reference to manifest loader, if present.
     public var manifestLoader: ManifestLoader?
 
+    public var skipBinaryTargets: Bool
+
     public init(
         flags: PackageModel.BuildFlags = PackageModel.BuildFlags(),
         xcconfigOverrides: AbsolutePath? = nil,
         isCodeCoverageEnabled: Bool? = nil,
         useLegacySchemeGenerator: Bool? = nil,
         enableAutogeneration: Bool? = nil,
-        addExtraFiles: Bool? = nil
+        addExtraFiles: Bool? = nil,
+        skipBinaryTargets: Bool? = nil
     ) {
         self.flags = flags
         self.xcconfigOverrides = xcconfigOverrides
         self.isCodeCoverageEnabled = isCodeCoverageEnabled ?? false
         self.useLegacySchemeGenerator = useLegacySchemeGenerator ?? false
         self.enableAutogeneration = enableAutogeneration ?? false
         self.addExtraFiles = addExtraFiles ?? true
+        self.skipBinaryTargets = skipBinaryTargets ?? false
     }
 }
 

Sources/Xcodeproj/pbxproj.swift

@@ -396,7 +396,13 @@ public func xcodeProject(
             productType = .framework
         case .test:
             productType = .unitTest
-        case .systemModule, .binary, .plugin, .macro:
+        case .binary:
+            if options.skipBinaryTargets {
+                continue
+            } else {
+                fallthrough
+            }
+        case .systemModule, .plugin, .macro:
             throw InternalError("\(target.type) not supported")
         }