I agree that we should stick to 1.6 until 1.7 is better supported
on Mac. The Java 1.7 prerelease at http://jdk7.java.net/macportpreview
requires OS X 10.7.3, so Mac users running 10.6 and earlier
would have to compile Java 1.7.
Also, Eclipse Juno (4.2) works with Java 1.6 and does not require 1.7:
http://wiki.eclipse.org/Eclipse/Installation#Install_a_JVM.
--dan
On 7/10/12 2:27 PM, Christopher Brooks wrote:
Dear Christoph Daniel,
Ptolemy II currently requires Java 1.6.
At a minimum, $PTII/ptdb uses javax.swing.GroupLayout somewhere.
The problem with requiring Java 1.7 is that Mac OS 10.7.4 has Java 1.6
installed as the default:
bash-3.2$ java -version
java version "1.6.0_33"
Java(TM) SE Runtime Environment (build 1.6.0_33-b03-424-11M3720)
Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03-424, mixed mode)
bash-3.2$ which java
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java
There is a Java 1.7 prerelease for the Mac available at:
http://jdk7.java.net/macportpreview/
So, until Java 1.7 is the default under Mac OS X, then we should
probably stick to 1.6.
This could change because Apple is no longer supporting Java, so Java
1.6 is probably the last Apple Java release.
However, Java 1.7 for Mac OS X is still in pre-release, so I'd prefer
not to add another step to the installation process.
However, if Eclipse 3.8 requires Java 1.7, then we may be forced to
require Java 1.7.
Waiting until September to make a decision is probably best.
Comments? I'm cc'ing kepler-dev, which includes many Mac users.
_Christopher
On 7/9/12 7:24 AM, Christoph Daniel Schulze wrote:
Dear Christopher,
the KIELER team is currently in the process of planning the switch to
Eclipse 3.8 and, later, Eclipse 4.2. As part of that, we're also
reconsidering to raise our Java compliance level from 1.5 to 1.7. Of
course, we need to be sure that this change won't break anything for our
partners.
Would the Ptolemy project be fine with its KIELER components using Java
1.7 features? This of course wouldn't become an issue until our visit in
September, during which I plan to further improve the layout algorithms
and its integration into Ptolemy.
Kind regards,
Christoph Daniel
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