Update Kotlin stdlib to JDK 8

Author: Rolf-Smit

gradle/dependencies.gradle

@@ -12,7 +12,7 @@ ext {
             androidGradlePlugin: "com.android.tools.build:gradle:4.1.2",
 
             // Dependencies
-            kotlinStdlibJdk7   : "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${projectVersion.kotlin}",
+            kotlinStdlibJdk8   : "org.jetbrains.kotlin:kotlin-stdlib-jdk8:${projectVersion.kotlin}",
             appCompat          : "androidx.appcompat:appcompat:1.2.0",
 
             // Test dependencies

plugin/build.gradle

@@ -85,14 +85,12 @@ test {
 dependencies {
     compileOnly gradleApi()
     implementation projectDependency.androidGradlePlugin
-    implementation projectDependency.kotlinStdlibJdk7
+    implementation projectDependency.kotlinStdlibJdk8
 
-    testImplementation projectDependency.kotlinStdlibJdk7
+    testImplementation projectDependency.kotlinStdlibJdk8
     testImplementation projectDependency.kotlinTest
     testImplementation gradleTestKit()
     testImplementation projectDependency.junit
     testImplementation projectDependency.truth
     testImplementation projectDependency.commonsCsv
 }
-
-// apply from: rootProject.file('publish.gradle')

plugin/src/test/test-fixtures/multi-module/app/build.gradle

@@ -30,12 +30,21 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
 }
 
 dependencies {
     implementation project(":library_android")
 
-    implementation projectDependency.kotlinStdlibJdk7
+    implementation projectDependency.kotlinStdlibJdk8
     implementation projectDependency.appCompat
 
     testImplementation projectDependency.junit

plugin/src/test/test-fixtures/multi-module/library_android/build.gradle

@@ -35,10 +35,19 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
 }
 
 dependencies {
-    implementation projectDependency.kotlinStdlibJdk7
+    implementation projectDependency.kotlinStdlibJdk8
     implementation projectDependency.appCompat
 
     testImplementation projectDependency.junit