From 473db2c5a78a4cd24a29bd02a66019e25537693f Mon Sep 17 00:00:00 2001
From: nik <Nikolay.Chashnikov@jetbrains.com>
Date: Tue, 19 Sep 2017 10:05:37 +0300
Subject: [PATCH] build scripts: explicitly enable incremental compilation for
 Kotlin

It isn't enabled by default in Kotlin 1.1.50 builds (https://github.com/JetBrains/kotlin/commit/514635e965b7c4378ef535c1e13cf68146753528), so if we don't enable it explicitly Kotlin compiler won't work properly.
---
 .../jetbrains/intellij/build/impl/CompilationContextImpl.groovy  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/CompilationContextImpl.groovy b/platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/CompilationContextImpl.groovy
index d7fb1848661b..1ac2f055a691 100644
--- a/platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/CompilationContextImpl.groovy
+++ b/platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/CompilationContextImpl.groovy
@@ -167,6 +167,7 @@ class CompilationContextImpl implements CompilationContext {
     }
     messages.info("Incremental compilation: " + options.incrementalCompilation)
     if (options.incrementalCompilation) {
+      System.setProperty("kotlin.incremental.compilation", "true")
       outputDirectoriesToKeep.add(dataDirName)
       outputDirectoriesToKeep.add(classesDirName)
     }