Add comment to gradle bug workaround.

diff --git a/build.gradle b/build.gradle
index 4feb3e00dbdb83313493a1db2a4064a5110725b7..b7d76b66eb4e3aab072789d0a0f29b78578d4286 100644 (file)
--- a/build.gradle
+++ b/build.gradle
@@ -31,6 +31,7 @@ task makesmallicu (type:Exec, dependsOn: configurations.smallicu) {
     inputs.file "${configurations.smallicu.resolve()[0]}"
     outputs.dir "$buildDir"
     outputs.file "$buildDir/icu4j-55.1.small.jar"
+    // necessary due to gradle bug: GRADLE-2638
     new File("$buildDir").mkdirs()
     commandLine "./mksmallicu.sh", "${configurations.smallicu.resolve()[0]}", "$buildDir/icu4j-55.1.small.jar"
 }