Add extendsFromCompat for Configuration (#1961)

https://docs.gradle.org/9.4.0/release-notes.html#build-authoring

Author: Goooler

src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/ShadowJavaPlugin.kt

@@ -3,6 +3,7 @@ package com.github.jengelman.gradle.plugins.shadow
 import com.github.jengelman.gradle.plugins.shadow.ShadowBasePlugin.Companion.SHADOW
 import com.github.jengelman.gradle.plugins.shadow.ShadowBasePlugin.Companion.shadow
 import com.github.jengelman.gradle.plugins.shadow.internal.addVariantsFromConfigurationCompat
+import com.github.jengelman.gradle.plugins.shadow.internal.extendsFromCompat
 import com.github.jengelman.gradle.plugins.shadow.internal.javaPluginExtension
 import com.github.jengelman.gradle.plugins.shadow.internal.moveGradleApiIntoCompileOnly
 import com.github.jengelman.gradle.plugins.shadow.internal.runtimeConfiguration
@@ -47,13 +48,13 @@ constructor(private val softwareComponentFactory: SoftwareComponentFactory) : Pl
   }
 
   protected open fun Project.configureConfigurations() {
-    val shadowConfiguration = configurations.shadow.get()
+    val shadowConfiguration = configurations.shadow
     configurations.named(COMPILE_CLASSPATH_CONFIGURATION_NAME) { compileClasspath ->
-      compileClasspath.extendsFrom(shadowConfiguration)
+      compileClasspath.extendsFromCompat(shadowConfiguration)
     }
     val shadowRuntimeElements =
       configurations.register(SHADOW_RUNTIME_ELEMENTS_CONFIGURATION_NAME) {
-        it.extendsFrom(shadowConfiguration)
+        it.extendsFromCompat(shadowConfiguration)
         it.isCanBeConsumed = true
         it.isCanBeResolved = false
         it.attributes { attrs ->

src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/GradleCompat.kt

@@ -67,6 +67,15 @@ internal fun Project.addBuildScanCustomValues() {
   }
 }
 
+/** TODO: this could be removed after bumping the min Gradle requirement to 9.4 or above. */
+internal fun Configuration.extendsFromCompat(vararg superConfigs: Provider<out Configuration>) {
+  if (GradleVersion.current() >= GradleVersion.version("9.4.0")) {
+    @Suppress("UnstableApiUsage") extendsFrom(*superConfigs)
+  } else {
+    extendsFrom(*superConfigs.map { it.get() }.toTypedArray())
+  }
+}
+
 /** TODO: this could be removed after bumping the min Gradle requirement to 9.2 or above. */
 internal fun AdhocComponentWithVariants.addVariantsFromConfigurationCompat(
   outgoingConfiguration: NamedDomainObjectProvider<Configuration>,