OpenJDK 7 is an open source implementation of version 7 of the Java Development Kit, Standard Edition. It includes tools for developing, testing, and running programs written in Java. This build requires both apache-ant and gcc5. You do NOT need to install Oracle's jdk, as apache-ant will work just fine with the jvm tools in gcc5. Before installing this package please consider any other jdk's/jre's that you have already installed as they may cause conflicts with the PATH, JAVA_HOME and MANPATH variables. After installing the package you will need to logout/login to your machine as it will add new files to the /etc/profile.d folder. This script may take a couple of hours to complete and will require about 9 GB of disk space for its temporary directory. It defaults to "/tmp/SBo" and you may redefine it like this: TMP=/your/temporary/dir ./openjdk7.SlackBuild The 'cacerts' binary is a keystore containing CA certificates which are used by Java applications. It is taken from the CentOS package 'ca-certificates-2015.2.4-65.0.1.el6_6.noarch.rpm'. NOTE: 32-bit builds are broken ATM but we are still working on it. If you would like to help, the problem is when linking the launcher the build system insists on trying to link with /usr/lib/libstd++.so.6 (which belongs to gcc11), instead of the one in /usr/lib/gcc/i586-slackware-linux/5.5.0, erroring out with message "undefined reference to `__divmoddi4@GCC_7.0.0".