From 34ab703f0e872f89e271bf541a3b437aaf428643 Mon Sep 17 00:00:00 2001
From: Jonas Herzig <jonas@spark-squared.com>
Date: Fri, 4 Jun 2021 12:58:51 +0200
Subject: [PATCH] Get JitPack to build with OpenJDK 16

---
 ensure-java-16 | 21 +++++++++++++++++++++
 jitpack.yml    |  8 ++++++++
 2 files changed, 29 insertions(+)
 create mode 100755 ensure-java-16
 create mode 100644 jitpack.yml

diff --git a/ensure-java-16 b/ensure-java-16
new file mode 100755
index 000000000..fd96c9a45
--- /dev/null
+++ b/ensure-java-16
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# https://github.com/jitpack/jitpack.io/issues/4355#issuecomment-744678253
+
+JV=`java -version 2>&1 >/dev/null | head -1`
+echo $JV | sed -E 's/^.*version "([^".]*)\.[^"]*".*$/\1/'
+
+if [ "$JV" != 16 ]; then
+	case "$1" in
+	install)
+		echo "installing sdkman..."
+		curl -s "https://get.sdkman.io" | bash
+		source ~/.sdkman/bin/sdkman-init.sh
+		sdk install java 16.0.1-open
+		;;
+	use)
+		echo "must source ~/.sdkman/bin/sdkman-init.sh"
+		exit 1
+		;;
+	esac
+fi
diff --git a/jitpack.yml b/jitpack.yml
new file mode 100644
index 000000000..264e9e23d
--- /dev/null
+++ b/jitpack.yml
@@ -0,0 +1,8 @@
+jdk:
+  - openjdk16
+before_install:
+  - ./ensure-java-16 install
+install:
+  - if ! ./ensure-java-16 use; then source ~/.sdkman/bin/sdkman-init.sh; fi
+  - java -version
+  - ./gradlew publishToMavenLocal