From a6dd97e40d51439c02411d07af99c25c3b5e9f47 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 17 May 2021 15:43:34 +0100
Subject: [PATCH] Polish

See gh-26576
---
 .../org/springframework/boot/build/KotlinConventions.java  | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java b/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
index c832a8039e..7611d71e1a 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
@@ -16,6 +16,9 @@
 
 package org.springframework.boot.build;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import org.gradle.api.Project;
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmOptions;
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile;
@@ -29,6 +32,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile;
  * <ul>
  * <li>Use {@code apiVersion} and {@code languageVersion} 1.3.
  * <li>Treat all warnings as errors
+ * <li>Suppress version warnings
  * </ul>
  * </ul>
  *
@@ -45,6 +49,9 @@ class KotlinConventions {
 				kotlinOptions.setApiVersion("1.3");
 				kotlinOptions.setLanguageVersion("1.3");
 				kotlinOptions.setAllWarningsAsErrors(true);
+				List<String> freeCompilerArgs = new ArrayList<>(compile.getKotlinOptions().getFreeCompilerArgs());
+				freeCompilerArgs.add("-Xsuppress-version-warnings");
+				compile.getKotlinOptions().setFreeCompilerArgs(freeCompilerArgs);
 			});
 		});
 	}