guix/gnu/packages/patches/openjdk-10-idlj-reproducibility.patch

From a0a0c6a43b88d946f2b5484892cf0209bd7c0e68 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=A1bor=20Boskovits?= <boskovits@gmail.com>
Date: Sat, 8 Dec 2018 21:25:31 +0100
Subject: [PATCH] Make idlj respect SOURCE_DATE_EPOCH.

---
 .../sun/tools/corba/se/idl/toJavaPortable/Util.java | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/java.corba/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/Util.java b/src/java.corba/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/Util.java
index 7397619f2..583d6b8e4 100644
--- a/src/java.corba/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/Util.java
+++ b/src/java.corba/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/Util.java
@@ -1146,7 +1146,18 @@ public class Util extends com.sun.tools.corba.se.idl.Util
     else
       formatter.setTimeZone (java.util.TimeZone.getDefault ());
 
-    stream.println ("* " + formatter.format (new Date ()));
+    try {
+	String epoch = System.getenv("SOURCE_DATE_EPOCH");
+	if(epoch != null) {
+	    long unixTime = Long.parseLong(epoch);
+	    stream.println ("* " + formatter.format (new Date (unixTime*1000L)));
+	} else {
+	    stream.println ("* " + formatter.format (new Date ()));
+	}
+    } catch (Exception e) {
+	//in case of error fall back to default
+	stream.println ("* " + formatter.format (new Date ()));
+    }
 
     // <daz>
     ///////////////
-- 
2.19.2