IcedTea software provides a harness to build the source code from http://openjdk.java.net using Free Software build tools and provides replacements for the binary plugs with code from the GNU Classpath project.
How To Build:
We have temporarily made the decision to remove the ECJ support. The
–with-icedtea option has been made default.
Now, IcedTea bootstraps against a system installed IcedTea or a previously built version of IcedTea.
To get started on a Fedora 7 GNU/Linux system with yum:
$ sudo yum –enablerepo=development install java-1.7.0-icedtea mercurial cups-devel lesstif-devel libXp-devel libXtst-devel libXi-devel xalan-j2 xerces-j2 libXt-devel libgcj freetype-devel gcc gcc-c++ wget java-1.5.0-gcj-devel alsa-lib-devel firefox-devel glib2-devel gtk2-devel ant libXinerama-devel
$ hg clone http://icedtea.classpath.org/hg/icedtea
$ cd icedtea
Full build instructions are in INSTALL, but this works:
For all other distributions, it is mandatory that you have another version of IcedTea built (b19 or less). The tarballs for all the releases are available here: http://icedtea.classpath.org/download/source.
When this completes you’ll have a usable IcedTea in openjdk/control/build/linux-i586 or openjdk/control/build/linux-amd64.