Re: Eclipse Luna on Fedora 21 and JDK 8 requirement

Max Rydahl Andersen <manderse@xxxxxxxxxx> · Fri, 31 Oct 2014 15:50:55 -0400 (EDT)

+1 for allowing cross compilation without having to resort to using oracle jdk unless really necessary.

/maxhttp://about.me/maxandersen

On 31 Oct 2014, at 19:55, Christopher <ctubbsii-fedora@xxxxxxxxxx> wrote:

On Fri, Oct 31, 2014 at 2:30 PM, Deepak Bhole <dbhole@xxxxxxxxxx> wrote:
* Christopher <ctubbsii-fedora@xxxxxxxxxx> [2014-10-31 14:02]:

[snip]

> There is no issue with -target 1.6; the issue was with strict source

> compatibility with 1.6. I can't recall the specifics (it had something to do

> with generic type checking, because 1.7's javac can make better inferences),

> but that's outside the scope of this issue. The main point, as it relates here,

> is that there may not be strict compatibility between javac provided by

> different JDKs, even if javac makes a best effort attempt to parse older

> source. A more obvious problem is the lack of bootstrap classpaths for older

> -source/-target, which is known to be likely to create compiled code that is

> not capable of running in an older JVM (this doesn't matter if you're

> developing for the latest Fedora, but it matters if you're using the latest

> Fedora to develop for other platforms, like RHEL or Android).

>  

Ah, yeah not much we can do (with current setup) where the older rt.jar

is needed on bootstrap path :/

[snip] 

Well, what we could do is rethink the policy about not packaging currently supported JDKs, just because they are expected to not have further updates at some future time. That policy's going to bite us anyway, if the pace of Java ever reaches a point where a version of Java is released *and* EOL'd during the same window (hypothetically, Java 8 is expected to EOL during F22, and Java 9 is expected to be released and EOL'd during F22; would that mean F22 cannot include any Java version?).

Personally, I like the idea of shipping the latest as default, and the next most recent (so long as it is currently supported) as available as an SDK/devel package and just stop updating it when there aren't any more upstream updates and drop it from the next release.

--
Christopher L Tubbs II
http://gravatar.com/ctubbsii

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