Self-extracting jre instructions
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1. You need 7za and 7zCon.sfx from the p7z-essentials folder to generate the self-extracting jre from the jre

On a mac, you need to compile these two binaries up yourself by downloading the p7zip source code from online http://p7zip.sourceforge.net/. Compile the source code by first runnng "make" to build the 7za, then run "make sfx" to build the 7zCon.sfx binary.

2. Need the jre for your java version.
Java 8 should be used for Expeditee.
The jre should be extracted into a folder named jre. Also, don't make it a tar file for Expeditee. (Greenstone expects the jre to be tarred up first.)

3. Run:
./p7z-essentials/7za a -sfx -mx=9 jre_bin[_x64] /path/to/your-jdk-version/jre

* -m0=lzma2 is already done automatically, setting the compression mode to lzma2.
* -mx=9 set its to ultra (compression? speed?)
* the output file name expected by the release-kit is jre_bin for 32 bit linux, jre_bin_x64 for 64 bit linux
* -sfx indicates that it will generate a self-extracting binary out of the input file
* the "a" indicates it will add the files from the input folder (the /path/to/your-jdk-version/jre in this case) to the output file



To get the JRE for a Mac, do one of the following:

A. Now (at least since jre v 1.7.0_79) the Oracle site has a JRE for Macs available for download as dmg and tar.gz files. If this is available:

1. Download the JRE.dmg or JRE.tar.gz for the java version you want and extract it.
2. From the extracted contents, the folder you want is jre<version>.jre/Contents/Home. Rename this Home subfolder to "jre".
3. Tar it up and create the self-extracting jre (the final step of the instructions above):
	./p7z-essentials/7za a -sfx -mx=9 jre_bin_x64 jre.tar


B. If no JRE.dmg or JRE.tar.gz for Mac is available:

1. Download the JDK.dmg for the java version you want. 
2. Open the dmg, drag the .pkg out to another folder.
3. Extract the pkg using: xar -xf <file>.pkg
4. Another couple of pkgs should appear, these are actually fake folders (like .app folders)
5. The one you want is the jdk<ver>.pkg. Rightclick > Show package contents to view its contents. 
6. Then double click on the Payload item to extract Payload. Alternatively, since it's just a tarfile, you can do
   tar -xf jdk180.pkg/Payload
7. You get a Contents folder, then browse to Contents > Home > jre. That's the folder you want.