Build: add temporary option to suppress jdkHome warning

build.gradle.kts

@@ -1135,7 +1135,7 @@ fun Project.configureJvmProject(javaHome: String, javaVersion: String) {
     }
 
     tasks.withType<KotlinCompile> {
-        kotlinOptions.jdkHome = javaHome
+        kotlinOptions.jdkHome = javaHome.takeUnless { kotlinBuildProperties.suppressJdkHomeWarning }
         kotlinOptions.jvmTarget = javaVersion
         kotlinOptions.freeCompilerArgs += "-Xjvm-default=compatibility"
     }

buildSrc/src/main/kotlin/BuildPropertiesExt.kt

@@ -20,3 +20,5 @@ val KotlinBuildProperties.jarCompression: Boolean get() = getBoolean("kotlin.bui
 val KotlinBuildProperties.ignoreTestFailures: Boolean get() = getBoolean("ignoreTestFailures", isTeamcityBuild)
 
 val KotlinBuildProperties.disableWerror: Boolean get() = getBoolean("kotlin.build.disable.werror", false)
+
+val KotlinBuildProperties.suppressJdkHomeWarning: Boolean get() = getBoolean("kotlin.suppress.jdkHome.warning", false)

core/descriptors.runtime/build.gradle.kts

@@ -31,7 +31,7 @@ val compileJava by tasks.getting(JavaCompile::class) {
 val compileKotlin by tasks.getting(KotlinCompile::class) {
     kotlinOptions {
         jvmTarget = "1.6"
-        jdkHome = rootProject.extra["JDK_16"] as String
+        jdkHome = (rootProject.extra["JDK_16"] as String).takeUnless { kotlinBuildProperties.suppressJdkHomeWarning }
         freeCompilerArgs += "-Xsuppress-deprecated-jvm-target-warning"
     }
 }

libraries/kotlin.test/junit5/build.gradle

@@ -35,7 +35,7 @@ configureSourcesJar()
 configureJavadocJar()
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
-    kotlinOptions.jdkHome = JDK_18
+    kotlinOptions.jdkHome = BuildPropertiesExtKt.getSuppressJdkHomeWarning(project.kotlinBuildProperties) ? null : JDK_18
     kotlinOptions.jvmTarget = 1.8
 }
 

libraries/stdlib/jdk7/build.gradle

@@ -67,7 +67,7 @@ artifacts {
 }
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
-    kotlinOptions.jdkHome = JDK_17
+    kotlinOptions.jdkHome = BuildPropertiesExtKt.getSuppressJdkHomeWarning(project.kotlinBuildProperties) ? null : JDK_17
 }
 
 compileKotlin {

libraries/stdlib/jdk8/build.gradle

@@ -60,7 +60,7 @@ artifacts {
 }
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
-    kotlinOptions.jdkHome = JDK_18
+    kotlinOptions.jdkHome = BuildPropertiesExtKt.getSuppressJdkHomeWarning(project.kotlinBuildProperties) ? null : JDK_18
     kotlinOptions.jvmTarget = 1.8
 }