 In order to bundle OpenJDK in Fedora and other free GNU/Linux distributions, OpenJDK needed to be buildable using only free software components.Due to the encumbered components in the class library and implicit assumptions within the build system that the JDK being used to build OpenJDK was a Sun JDK, this was not possible.To achieve openness, Red Hat started the IcedTea project in June 2007.