Deepak Bhole

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From upstream OpenJDK to RPMs on your machine

Over the past few years, I have been asked on and off as to what the process is for the RPMs that get into Red Hat Enterprise Linux and Fedora repositories. Over those years, the answer has evolved as we attempt to better the process. As it stands right now, there is a difference between how OpenJDK6, OpenJDK7 and OpenJDK8 (preview in Fedora 19) end up into RPMs. This post will shed some light into what those processes are.

OpenJDK6
This was the first (well, technically second, if you count the brief period when IcedTea7 was in Fedora before OpenJDK6) OpenJDK based JDK that was introduced in Fedora and RHEL.

OpenJDK6 has been EOLd by Oracle as of February 2013, and Red Hat has taken over maintainer-ship since. Since the goal of Fedora is to have the latest and greatest, we allowed OpenJDK6 in Fedora to EOL after Fedora 16 in favour of OpenJDK7. Enterprises however have much longer cycles and we continue to ship and support OpenJDK6 in RHEL-5 and RHEL-6 today.

OpenJDK6 in Fedora and RHEL has always been provided via a project named IcedTea. IcedTea was started by Red Hat to address build and binary plug issues that were in the initial version of OpenJDK. The purpose of IcedTea was to provide build scaffolding that made it easy to build OpenJDK, to provide open-source replacements for binary plugs, and to provide fixes that couldn’t otherwise make it into upstream OpenJDK.

The process for shipping new OpenJDK6 releases in Fedora and RHEL hasn’t really changed over the years and it is as follows:

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