KT-80205: add plugin path option to swift compilation, so that Testing framework is located ^KT-80205 fixed

Merge-request: KT-MR-23159
Merged-by: Artem Olkov <[email protected]>
(cherry picked from commit a433e55)

Author: mMaxy

native/native.tests/tests/org/jetbrains/kotlin/konan/test/blackbox/support/settings/TestProcessSettings.kt

@@ -326,6 +326,20 @@ internal class XCTestRunner(val isEnabled: Boolean, private val nativeTargets: K
         "${targetPlatform()}/Developer/Library/Frameworks/"
     }
 
+    // absent on xcode pre 26, we can drop the optionality as soon as we drop xcode 16
+    val toolchainPath: String? by lazy {
+        val result = try {
+            runProcess(
+                "/usr/bin/xcrun",
+                "--show-toolchain-path"
+            )
+        } catch (_: Throwable) {
+            return@lazy null
+        }
+
+        result.stdout.trim()
+    }
+
     private fun targetPlatform(): String {
         val xcodeTarget = when (val target = nativeTargets.testTarget) {
             KonanTarget.MACOS_X64, KonanTarget.MACOS_ARM64 -> "macosx"
@@ -350,6 +364,7 @@ internal class XCTestRunner(val isEnabled: Boolean, private val nativeTargets: K
 }
 
 val Settings.systemFrameworksPath: String get() = get<XCTestRunner>().frameworksPath
+val Settings.systemToolchainPath: String? get() = get<XCTestRunner>().toolchainPath
 
 /**
  * A custom (i.e., the second, an alternative) distribution of the Kotlin/Native compiler.

native/swift/swift-export-standalone-integration-tests/src/org/jetbrains/kotlin/swiftexport/standalone/test/AbstractSwiftExportExecutionTest.kt

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.konan.test.blackbox.support.runner.TestExecutable
 import org.jetbrains.kotlin.konan.test.blackbox.support.runner.TestRunners.createProperTestRunner
 import org.jetbrains.kotlin.konan.test.blackbox.support.settings.KotlinNativeTargets
 import org.jetbrains.kotlin.konan.test.blackbox.support.settings.systemFrameworksPath
+import org.jetbrains.kotlin.konan.test.blackbox.support.settings.systemToolchainPath
 import org.jetbrains.kotlin.swiftexport.standalone.SwiftExportModule
 import org.jetbrains.kotlin.utils.KotlinNativePaths
 import org.junit.jupiter.api.Assumptions
@@ -81,14 +82,15 @@ abstract class AbstractSwiftExportExecutionTest : AbstractSwiftExportTest() {
                 "-L", it.rootDir.absolutePath,
                 "-l${it.moduleName}",
             )
-        } + listOf(
+        } + listOfNotNull(
             "-Xcc", "-fmodule-map-file=${Distribution(KotlinNativePaths.homePath.absolutePath).kotlinRuntimeForSwiftModuleMap}",
             "-L", kotlinBinaryLibrary.libraryFile.parentFile.absolutePath,
             "-l${kotlinBinaryLibrary.libraryFile.nameWithoutExtension.removePrefix("lib")}",
 
             "-F", testRunSettings.systemFrameworksPath,
             "-Xlinker", "-rpath", "-Xlinker", testRunSettings.systemFrameworksPath,
-            "-framework", "Testing"
+            "-framework", "Testing",
+            testRunSettings.systemToolchainPath?.let { "-plugin-path ${it}/usr/lib/swift/host/plugins/testing/" }
         )
 
         val success = SwiftCompilation(