diff --git a/Sources/Commands/Utilities/TestingSupport.swift b/Sources/Commands/Utilities/TestingSupport.swift
index 81b32961376..2d6d12bebf8 100644
--- a/Sources/Commands/Utilities/TestingSupport.swift
+++ b/Sources/Commands/Utilities/TestingSupport.swift
@@ -242,10 +242,10 @@ enum TestingSupport {
         // Since XCTestHelper targets macOS, we need the macOS platform paths here.
         if let sdkPlatformPaths = try? SwiftSDK.sdkPlatformPaths(for: .macOS) {
             // appending since we prefer the user setting (if set) to the one we inject
-            for frameworkPath in sdkPlatformPaths.frameworks {
+            for frameworkPath in sdkPlatformPaths.runtimeFrameworkSearchPaths {
                 env.appendPath(key: "DYLD_FRAMEWORK_PATH", value: frameworkPath.pathString)
             }
-            for libraryPath in sdkPlatformPaths.libraries {
+            for libraryPath in sdkPlatformPaths.runtimeLibrarySearchPaths {
                 env.appendPath(key: "DYLD_LIBRARY_PATH", value: libraryPath.pathString)
             }
         }
diff --git a/Sources/PackageModel/SwiftSDKs/SwiftSDK.swift b/Sources/PackageModel/SwiftSDKs/SwiftSDK.swift
index bef655063af..5e5b95908cf 100644
--- a/Sources/PackageModel/SwiftSDKs/SwiftSDK.swift
+++ b/Sources/PackageModel/SwiftSDKs/SwiftSDK.swift
@@ -593,10 +593,10 @@ public struct SwiftSDK: Equatable {
         #if os(macOS)
         do {
             let sdkPaths = try SwiftSDK.sdkPlatformPaths(for: darwinPlatform, environment: environment)
-            extraCCFlags.append(contentsOf: sdkPaths.frameworks.flatMap { ["-F", $0.pathString] })
-            extraSwiftCFlags.append(contentsOf: sdkPaths.frameworks.flatMap { ["-F", $0.pathString] })
-            extraSwiftCFlags.append(contentsOf: sdkPaths.libraries.flatMap { ["-I", $0.pathString] })
-            extraSwiftCFlags.append(contentsOf: sdkPaths.libraries.flatMap { ["-L", $0.pathString] })
+            extraCCFlags.append(contentsOf: sdkPaths.buildTimeFrameworkSearchPaths.flatMap { ["-F", $0.pathString] })
+            extraSwiftCFlags.append(contentsOf: sdkPaths.buildTimeFrameworkSearchPaths.flatMap { ["-F", $0.pathString] })
+            extraSwiftCFlags.append(contentsOf: sdkPaths.buildTimeLibrarySearchPaths.flatMap { ["-I", $0.pathString] })
+            extraSwiftCFlags.append(contentsOf: sdkPaths.buildTimeLibrarySearchPaths.flatMap { ["-L", $0.pathString] })
             xctestSupport = .supported
         } catch {
             xctestSupport = .unsupported(reason: String(describing: error))
@@ -628,11 +628,21 @@ public struct SwiftSDK: Equatable {
     ///
     /// - SeeAlso: ``sdkPlatformPaths(for:environment:)``
     public struct PlatformPaths {
-        /// Paths of directories containing auxiliary platform frameworks.
-        public var frameworks: [Basics.AbsolutePath]
+        /// Paths of directories containing auxiliary platform frameworks which
+        /// should be included as framework search paths at build time.
+        public var buildTimeFrameworkSearchPaths: [Basics.AbsolutePath]
 
-        /// Paths of directories containing auxiliary platform libraries.
-        public var libraries: [Basics.AbsolutePath]
+        /// Paths of directories containing auxiliary platform libraries which
+        /// should be included as library search paths at build time.
+        public var buildTimeLibrarySearchPaths: [Basics.AbsolutePath]
+
+        /// Paths of directories containing auxiliary platform frameworks which
+        /// should be included as framework search paths at runtime.
+        public var runtimeFrameworkSearchPaths: [Basics.AbsolutePath]
+
+        /// Paths of directories containing auxiliary platform libraries which
+        /// should be included as library search paths at runtime.
+        public var runtimeLibrarySearchPaths: [Basics.AbsolutePath]
     }
 
     /// Returns `macosx` sdk platform framework path.
@@ -641,10 +651,10 @@ public struct SwiftSDK: Equatable {
         environment: Environment = .current
     ) throws -> (fwk: Basics.AbsolutePath, lib: Basics.AbsolutePath) {
         let paths = try sdkPlatformPaths(for: .macOS, environment: environment)
-        guard let frameworkPath = paths.frameworks.first else {
+        guard let frameworkPath = paths.buildTimeFrameworkSearchPaths.first else {
             throw StringError("could not determine SDK platform framework path")
         }
-        guard let libraryPath = paths.libraries.first else {
+        guard let libraryPath = paths.buildTimeLibrarySearchPaths.first else {
             throw StringError("could not determine SDK platform library path")
         }
         return (fwk: frameworkPath, lib: libraryPath)
@@ -682,7 +692,12 @@ public struct SwiftSDK: Equatable {
             components: "Developer", "usr", "lib"
         )
 
-        let sdkPlatformFrameworkPath = PlatformPaths(frameworks: [frameworksPath, privateFrameworksPath], libraries: [librariesPath])
+        let sdkPlatformFrameworkPath = PlatformPaths(
+            buildTimeFrameworkSearchPaths: [frameworksPath /* omit privateFrameworksPath */],
+            buildTimeLibrarySearchPaths: [librariesPath],
+            runtimeFrameworkSearchPaths: [frameworksPath, privateFrameworksPath],
+            runtimeLibrarySearchPaths: [librariesPath]
+        )
         _sdkPlatformFrameworkPath[darwinPlatform] = sdkPlatformFrameworkPath
         return sdkPlatformFrameworkPath
     }