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======================================================================
The Internet Communications Engine
======================================================================
Ice is a modern alternative to object middleware such as CORBA or
COM/DCOM/COM+. It is easy to learn, yet provides a powerful network
infrastructure for demanding technical applications. It features an
object-oriented specification language, easy to use C++, Java, Python,
PHP, C#, and Visual Basic mappings, a highly efficient protocol,
asynchronous method invocation and dispatch, dynamic transport
plug-ins, TCP/IP and UDP/IP support, SSL-based security, a firewall
solution, and much more.
Ice is available under the terms of the GNU General Public License
(GPL) (see LICENSE file). Commercial licenses are available for
customers who wish to use Ice with proprietary products. Please
contact sales@zeroc.com for more information about licensing Ice.
======================================================================
About this distribution
======================================================================
This distribution is a binary release of Ice @ver@ for Mac OS X and
includes the following components:
- The Ice runtime, including executables for the Ice services, HTML
documentation and Slice files.
- Run time libraries for C++, Java, and Python. These libraries enable
you to execute Ice applications.
- Tools and libraries for developing Ice applications.
======================================================================
Requirements
======================================================================
This binary distribution was compiled on Mac OS X 10.4.7 using the
default C++ compiler, GCC 4.0.1.
Java
----
Ice for Java requires J2SE 1.4.2, which is included with Mac OS X
10.3.4 and later, or J2SE 1.5.0.
Python
------
The Ice extension for Python included in this distribution requires
Python 2.3 installed with Mac OS X 10.4. If you prefer to use a later
version of Python, you can download the Ice for Python source code
from the ZeroC web site at http://www.zeroc.com/download.html.
======================================================================
Berkeley DB and Expat
======================================================================
This distribution includes the C++ and Java runtime for Berkeley DB
4.3.29 and the Expat 1.95.8 library. The Berkeley DB C++ runtime was
built using GCC 4.0.1. The Berkeley DB and Expat licenses are provided
in the file THIRD_PARTY_LICENSE.
======================================================================
Setting up your environment to use Ice
======================================================================
General
-------
The discussion below assumes you have defined the ICE_HOME variable
with the directory of your Ice installation.
In order to use Ice services and tools such as Slice translators, you
need to add $ICE_HOME/bin to your PATH as shown in the bash command
below:
$ export PATH=$ICE_HOME/bin:$PATH
Ice shared libraries and executables in this distribution contain
/opt/Ice-@mmver@/lib as embedded runpath. In order to run Ice services
and tools, you can either:
- create a symbolic link /opt/Ice-@mmver@ that points to your Ice
installation.
$ ln -s $ICE_HOME /opt/Ice-@mmver@
- or add $ICE_HOME/lib to your DYLD_LIBRARY_PATH environment variable
$ export DYLD_LIBRARY_PATH=$ICE_HOME/lib:$DYLD_LIBRARY_PATH
C++
---
When compiling Ice for C++ programs, you must pass $ICE_HOME/include
to the compiler with the -I option, and $ICE_HOME/lib with the -L
option. Furthermore, a C++ program needs to link with at least libIce
and libIceUtil, so a typical link command would look like this:
$ c++ -o myprogram myprogram.o -L$ICE_HOME/lib -lIce -lIceUtil
Additional libraries are necessary if you are using an Ice service
such as IceGrid or Glacier2.
Java
----
To use Ice for Java, you must add $ICE_HOME/lib/Ice.jar to your
CLASSPATH, as shown below:
$ export CLASSPATH=$ICE_HOME/lib/Ice.jar:$CLASSPATH
To use the Java5 version of Ice instead, modify your CLASSPATH as
follows:
$ export CLASSPATH=$ICE_HOME/lib/java5/Ice.jar:$CLASSPATH
If you plan to use Freeze for persistence, you must also add the
Berkeley DB JAR file (db.jar) to your CLASSPATH:
$ export CLASSPATH=$ICE_HOME/lib/db.jar:$CLASSPATH
In addition, the JVM requires that the directory containing the
Berkeley DB libraries be listed in java.library.path, therefore you
must add this directory to DYLD_LIBRARY_PATH.
Python
------
To use Ice for Python, the PYTHONPATH environment variable must be
updated so that the interpreter can load the Ice extension and
supporting Python files:
$ export PYTHONPATH=$ICE_HOME/python:$PYTHONPATH
======================================================================
Using the IceGrid Administrative Console
======================================================================
A Java-based graphical tool for administering IceGrid applications
is included in this distribution. The Java archive file is installed
as
$ICE_HOME/lib/IceGridGUI.jar
With a suitable Java installation, you can execute the application
using the following command:
$ java -jar IceGridGUI.jar
======================================================================
Demos and documentation
======================================================================
Sample programs are provided in the Ice-@ver@-demos.tar.gz package,
which can be downloaded from the ZeroC web site at
http://www.zeroc.com/download.html
Please refer to the README.DEMOS file included in that package for
more information.
See doc/README.html for information on the documentation included with
this distribution.
======================================================================
Binary compatibility
======================================================================
Patch releases of Ice are binary compatible. For example, version
<x>.<y>.1 is compatible with <x>.<y>.0, so you can run applications
compiled with <x>.<y>.0 with the <x>.<y>.1 runtime without having to
recompile.
With the binary installers, simply uninstall the previous version of
Ice and install the new one. Already deployed applications that were
compiled against the <x>.<y>.0 runtime will automatically use the
<x>.<y>.1 runtime.
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