From 8a2f74a603a79c3abac4c19f7e40a5f9437b8150 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Sun, 30 Aug 2020 22:34:29 +0200
Subject: [PATCH] Fix javadoc generation on java 11

See https://github.com/gradle/gradle/issues/11182
---
 build.gradle | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/build.gradle b/build.gradle
index d74f94e7..f2ea379d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -235,8 +235,11 @@ task jacocoRootReport(type: JacocoReport) {
     setOnlyIf { true }
 }
 
-
 task javadocAll(type: Javadoc) {
+    def currentJavaVersion = JavaVersion.current()
+    if (currentJavaVersion.compareTo(JavaVersion.VERSION_1_9) >= 0) {
+        options.addStringOption("-release", "8");
+    }
     source subprojects.collect {project ->
         project.sourceSets.main.allJava }
     destinationDir = new File(buildDir, 'javadoc')