From 323ac4bf5b174665878506a0713c66c7f2d34883 Mon Sep 17 00:00:00 2001
From: Ilya Matveev <ilya.matveev@jetbrains.com>
Date: Wed, 12 Aug 2020 15:31:57 +0700
Subject: [PATCH] Build infra: Fix rebuilding caches after library changes

---
 .../kotlin/gradle/plugin/konan/tasks/KonanCacheTask.kt      | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/tasks/KonanCacheTask.kt b/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/tasks/KonanCacheTask.kt
index 9093f9810e6..dee904cbff3 100644
--- a/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/tasks/KonanCacheTask.kt
+++ b/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/tasks/KonanCacheTask.kt
@@ -49,6 +49,12 @@ open class KonanCacheTask: DefaultTask() {
 
     @TaskAction
     fun compile() {
+        // Compiler doesn't create a cache if the cacheFile already exists. So we need to remove it manually.
+        if (cacheFile.exists()) {
+            val deleted = cacheFile.deleteRecursively()
+            check(deleted) { "Cannot delete stale cache: ${cacheFile.absolutePath}" }
+        }
+
         val args = listOf(
             "-g",
             "-target", target,