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Erlang/OTP                                               December 8, 2011


Release of Erlang 5.9/OTP R15B


1.      GENERAL
        -------

1.1     Installation Guide

        The installation guide can be found in

                <inst-root>doc/installation_guide/users_guide.html

1.2     Java

        The Java sources were compiled using Java version 1.5.

1.3     Disk space

        An installation of Erlang/OTP needs approximately 300 MB of
        disk space.

1.4     The package contains HTML documentation. You can also get this
        documentation preformatted for printing in PDF format from

            http://www.erlang.se/doc/

        This site also contains HTML documentation for older releases
        as a reference.

1.5     The Erlang system can run old BEAM files compiled with R11B-2
	or later (and almost all BEAM files compiled with R11B-0 or
	R11B-1). BEAM files from R10B or earlier are not supported.

	To get the best performance, you should recompile your
	application code with the R15B compiler.


2.      NOTES ABOUT THE SOLARIS VERSION
        -------------------------------

2.1	For the Sparc Solaris environment, Solaris10 (2.10) and above is 
	supported. The emulator runs on older Solaris 8 (2.8) versions
	and above. Older Solaris versions are neither tested nor supported.
	Also an Ultrasparc (sun4u architecture) is required.


3.      NOTES ABOUT THE VXWORKS VERSION
        -------------------------------

3.1	The platform VxWorks is discontinued in the sense that only the 
	libraries (erl_interface and ic's libraries) are supported. Running
	the Erlang emulator on VxWorks might still possible but it's no longer
	maintained. The VxWorks release is still packaged as a full release,
	but no support will be available for anything but the communication libraries. 

4       NOTES ABOUT THE LINUX VERSIONS
        -----------------------------

4.1     The following linux distributions/version combinations are supported 
	and tested:
	
	SuSE 10.1 x86, SuSE 10.1 x86_64, SuSE 11.0 x86, SuSE 11.0 x86_64

5.      APPLICATIONS NOTES
        ------------------


6.      MORE INFORMATION
        ----------------

	Commercial customers please visit http://www.erlang.se to find 
	releases and more information. Commercial support is given through
	support@erlang.ericsson.se.

	Open source users please visit http://www.erlang.org and direct 
	problems to the open source community through the mailing list.