Re: [gentoo-java] Cross compiling for older platform versions

[Vlastimil Babka <caster@gentoo.org>]

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Petteri Räty wrote:
> David Herron kirjoitti:
>> Hi, I talked with Petterati at FOSDEM last weekend and he explained to 
>> me (again) the issue y'all have.  I just noticed that Joe Darcy has 
>> posted a blog entry which seems to be really close to what you want.  
>> Namely that even if you specify "-source 1.4" the platform library is 
>> gonna change from release-release.  Please take a look.
>>
>> http://blogs.sun.com/darcy/entry/how_to_cross_compile_for
>>
>>
> 
> Yeah we talked a while ago on #gentoo-java or was it on this mailing 
> list that our approach to backwards compatibility is not enough to be 
> able to always run things with 1.4 but using -source is enough to get us 
> through the following situation:

Actually, this idea might be worth exploring when gen-1 is gone and some 
packages in gen-2 still need 1.4 to compile (but can run with 1.5+), 1.4 
EOL is near... Maybe taking rt.jar from blackdown-jdk would not break 
the license (didn't check), wouldn't need fetch restriction and because 
it would be just used as compilation target, the security 
vulnerabilities would be moot.

Or maybe there will be only few packages, with existing or easy patches 
to work with 1.5+ :)
-- 
Vlastimil Babka (Caster)
Gentoo/Java


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