[kepler-dev] Java 7 and ant 1.8.2

[Daniel Crawl]

Hi Christopher,

Thanks for the information. Yes, this change will affect older Macs
still using Java 6, but the support costs seem low.

For the next Kepler release, we'll do our testing with Java 7 and make
sure the installers and one-click apps work for all the platforms.

Is Ptolemy moving to Java 7 soon?

   --dan

On 7/11/14 10:25 AM, Christopher Brooks wrote:
> The only reason I know of to stick with Java 1.6 is that the version of
> Java that is supported by Apple for Mac OS X 10.7.
>
> This is the version of MacOS X that runs on three year old Macs, such as
> the one I'm using right now.
>
> Apple is still supplying patches for Java 1.6, see
> http://support.apple.com/kb/ht5982, updated last October.
>
> However, Java 7 is available for the Mac.
>
> Requiring Java 7 is probably ok, but there could be some support costs
> in that Mac users will need to install Java before installing Kepler.
>
> One additional complication is that the disk layout of Apple's 1.6 Java
> and Oracle's 1.7 and 1.8 Java differ.
>
> This could cause problems with creating a one-click Mac app that has the
> proper stub to invoke Java.
>
> Edward reported that the Apple 1.6 Vergil.app created by Ptolemy does
> not work on his new Mac.
>
> It is unfortunate that people still insist on using Windows and that
> Windows has not kept up with the times.  Why there would be limits in
> the length of the classpath in this day and age is beyond me.    One
> possibility would be to look at how Eclipse handles the classpath.
> Presumably, they have similar issues. However, that seems like extra work
>
> Bottom line: we can go ahead with this, but it will result in some small
> problems.
>
> _Christopher
>
>
> On 7/11/14 10:16 AM, Benjamin Leinfelder wrote:
>> Hi Dan,
>> Requiring Java 7 seems reasonable, especially if you want to use
>> features only available in version 7. This will be for current
>> development and the upcoming 2.5 release, correct?
>> -ben
>>
>> On Jul 11, 2014, at 9:57 AM, Daniel Crawl <danielcrawl at gmail.com> wrote:
>>
>>> I'd like to require Java 7 for Kepler. Java 7 has new features and
>>> better performance, and Oracle is no longer publicly releasing security
>>> updates for Java 6. Does anyone object to Kepler requiring Java 7?
>>>
>>> For developers compiling Kepler, ant 1.8.2 or later is now required.
>>> With the addition of new modules and jars, the class path has exceeded
>>> the maximum path length on Windows. To avoid this problem, I've updated
>>> the Kepler build system to use wildcards for the class path instead of
>>> referencing individual jars. The earliest version of ant that supports
>>> wildcards in the class path is 1.8.2.
>>>
>>>   --dan
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>